Abrégé

A centralized and turn-off-controllable line commutated converter, a control method and apparatus, and a system. The centralized and turn-off-controllable line commutated converter comprises: a main circuit, comprising at least one upper bridge arm circuit and at least one lower bridge arm circuit, wherein one end of the at least one upper bridge arm circuit is connected to an anode bus of the main circuit, the other end of the at least one upper bridge arm circuit is connected to one end of the at least one lower bridge arm circuit, the other end of the at least one lower bridge arm circuit is connected to a cathode bus of the main circuit, the at least one upper bridge arm circuit and the at least one lower bridge arm circuit each comprise a first semi-controlled valve, each comprise a first fully-controlled valve or share a first fully-controlled valve; and an auxiliary circuit, comprising a turn-off circuit, wherein one end of the turn-off circuit is connected to the anode bus of the main circuit, and the other end of the turn-off circuit is connected to the cathode bus of the main circuit. Therefore, commutation failures can be prevented, thereby improving the reliability of high-voltage direct-current power transmission.

Classes IPC  ?

• H02M 7/521 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont

Abrégé

The present application discloses a device cross reference system and method and a storage medium. The system comprises: any two of a monitoring system, visualization software and drawing software, and a one-way or two-way cross reference link is arranged between at least two of the monitoring system, the visualization software and the drawing software, wherein the monitoring system monitors state information, event information, or/and alarm information of a device, the visualization software implements control and protection functions of the device in a graphic interface and signal visualization mode, and the drawing software is used for displaying an engineering drawing of the device. The present application achieves the mutual cross reference among the monitoring system, the visualization software and the drawing software, achieves integration and linkage of device information, and significantly improves the convenience, accuracy and troubleshooting efficiency.

Classes IPC  ?

• G06F 30/12 - CAO géométrique caractérisée par des moyens d’entrée spécialement adaptés à la CAO, p. ex. interfaces utilisateur graphiques [UIG] spécialement adaptées à la CAO
• G06F 111/20 - CAO de configuration, p. ex. conception par assemblage ou positionnement de modules sélectionnés à partir de bibliothèques de modules préconçus

Abrégé

The present application provides a current breaking device and a control method therefor. The current breaking device comprises: a main branch, wherein the main branch comprises at least two current-conducting units connected in series, and each current-conducting unit comprises a first mechanical switch and a first nonlinear resistor are connected in parallel; a transfer branch, wherein the transfer branch is connected in parallel to the main branch, and the transfer branch comprises an oscillation capacitor; an isolation branch, wherein the isolation branch is connected to the main branch in series, and the isolation branch comprises a second mechanical switch; and an oscillation inductor and a power electronics unit, connected in series in a parallel loop of the main branch and the transfer branch, wherein the oscillation inductor is connected in series within the main branch or within the transfer branch, and the power electronics unit is connected in series within the main branch or within the transfer branch.

Classes IPC  ?

• H02H 3/087 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge pour des systèmes à courant continu
• H02H 3/06 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion Détails avec reconnexion automatique
• H02H 3/05 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion Détails avec des moyens pour accroître la fiabilité, p. ex. dispositifs redondants

Abrégé

A multi-port flexible alternating-current interconnection apparatus, an alternating-current and direct-current hybrid power transmission system and an alternating-current transformer substation. The multi-port flexible alternating-current interconnection apparatus comprises a common alternating-current bus and a plurality of three-phase series-connection units. One end of a three-phase series-connection unit is electrically connected to the common alternating-current bus, and the other end thereof leads out an alternating-current port. Each three-phase series-connection unit comprises a plurality of split-phase series-connection units, each split-phase series-connection unit comprising a reactor and a converter chain which are connected in series. By connecting the converter chains between the common alternating-current bus and an alternating-current power supply and using the common alternating-current bus as a center point, multi-port alternating-current interconnection can be conveniently achieved.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
• H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs

Abrégé

The present application discloses a TDLAS-based detection system and method for dissolved gases in oil, comprising: selecting four lasers with different central wavelengths for detection of six different dissolved gases in oil, and using an optical switch to control the light emission timing and duration of the lasers; configuring a characteristic absorption cell and a reference absorption cell; obtaining weak useful signals by means of dual-channel lock-in amplification; and dynamically adjusting parameters of a gas detection system to obtain an optimal second harmonic peak value for concentration inversion. The TDLAS-based detection system for dissolved gases in oil provided by the present application ensures the detection precision of the system after long-term operation, improves the economy and long-term stability of the system, and provides auxiliary decision-making for health condition monitoring of transformers.

Classes IPC  ?

• G01N 21/39 - CouleurPropriétés spectrales, c.-à-d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p. ex. spectrométrie d'absorption atomique en utilisant des lasers à longueur d'onde réglable

Abrégé

The present application relates to the technical field of power electronic devices, and provides a driver, a semiconductor apparatus, and a method for controlling a semiconductor apparatus. The driver comprises a fixing assembly and a driving assembly. The fixing assembly comprises an installation member and a connecting member, the connecting member being disposed on the mounting member, and the mounting member being provided with a first positive electrode and a first negative electrode. The driving assembly comprises a driving board, the driving board being provided with a second positive electrode and a second negative electrode. The driving board is movably connected to the connecting member, such that the first positive electrode is connected to the second positive electrode, and the first negative electrode is connected to the second negative electrode. The driver has the advantages of being convenient to repair, upgrade and modify, and having low usage costs.

Classes IPC  ?

• H02M 1/06 - Circuits spécialement adaptés pour rendre non-conducteurs les tubes à décharge ou les dispositifs à semi-conducteurs équivalents, p. ex. thyratrons, thyristors
• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
• H03K 17/72 - Dispositifs à semi-conducteurs bipolaires comportant au moins trois jonctions PN, p. ex. thyristors, transistors unijonction programmables, ou comportant au moins quatre électrodes, p. ex. commutateurs commandés au silicium, ou comportant deux électrodes connectées à la même région de conductivité, p. ex. transistors unijonction
• H01R 13/24 - Contacts pour coopération par aboutage élastiquesContacts pour coopération par aboutage montés élastiquement

Abrégé

The invention relates to the technical field of battery swapping for electric vehicles. A control method of a smart battery swapping station includes: acquiring vehicle information of a vehicle requiring battery swapping, and retrieving a model type of a corresponding battery pack locking and unlocking hole and specific parameters from a database; when the vehicle arrives at a battery swapping operation platform, capturing an image of a vehicle chassis to determine an initial pose of the vehicle chassis; processing the initial pose to extract center coordinates of the locking and unlocking hole and a normal vector direction of the locking and unlocking hole; comparing the center coordinates of the locking and unlocking hole and the normal vector direction of the locking and unlocking hole with the retrieved model type of battery pack locking and unlocking hole and specific parameters in the database to determine if the information is consistent.

Classes IPC  ?

• B60L 53/80 - Remplacement d'éléments d’emmagasinage d'énergie, p. ex. batteries amovibles
• B60L 53/62 - Surveillance et commande des stations de charge en réponse à des paramètres de charge, p. ex. courant, tension ou charge électrique
• B60L 53/64 - Optimisation des coûts énergétiques, p. ex. en répondant aux tarifs d'électricité
• B60L 53/65 - Surveillance et commande des stations de charge impliquant l'identification des véhicules ou de leurs types de batteries
• G06T 7/13 - Détection de bords
• G06T 7/73 - Détermination de la position ou de l'orientation des objets ou des caméras utilisant des procédés basés sur les caractéristiques
• G06V 10/48 - Extraction de caractéristiques d’images ou de vidéos en cartographiant les valeurs caractéristiques du motif en espace paramétrique, p. ex. transformation de Hough
• G06V 10/77 - Traitement des caractéristiques d’images ou de vidéos dans les espaces de caractéristiquesDispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant l’intégration et la réduction de données, p. ex. analyse en composantes principales [PCA] ou analyse en composantes indépendantes [ ICA] ou cartes auto-organisatrices [SOM]Séparation aveugle de source
• G06V 10/82 - Dispositions pour la reconnaissance ou la compréhension d’images ou de vidéos utilisant la reconnaissance de formes ou l’apprentissage automatique utilisant les réseaux neuronaux
• G06V 20/58 - Reconnaissance d’objets en mouvement ou d’obstacles, p. ex. véhicules ou piétonsReconnaissance des objets de la circulation, p. ex. signalisation routière, feux de signalisation ou routes

Abrégé

A flexible alternating-current interconnection apparatus and a control method therefor. The flexible alternating-current interconnection apparatus comprises a three-phase series-connected converter valve connecting two alternating-current systems, the series-connected converter valve comprising N rectifier-inverter modules, M conducting-current blocking modules and K reactive modules. Each of the rectifier-inverter module comprises a rectifier full-bridge circuit and an inverter full-bridge circuit which are connected in parallel on a direct-current side, an alternating-current port of the inverter full-bridge circuit of each of the rectifier-inverter modules and alternating-current ports of the inverter full-bridge circuits of the other rectifier-inverter modules being successively cascaded, and an alternating-current port of the rectifier full-bridge circuit of each of the rectifier-inverter modules being connected to different secondary windings of a multi-winding transformer or a power supply capable of supplying energy. Each of the conducting-current blocking modules at least comprises a diode full-bridge rectifier circuit and a blocking capacitor connected to a direct-current end of the diode full-bridge rectifier circuit in parallel, and the conducting-current blocking module further comprises a conducting-current loop. The flexible alternating-current interconnection apparatus has the following advantages of flexible operation mode, high efficiency, and high reliability.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
• H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique

Abrégé

The present application provides a file updating method and apparatus in a redundant environment, an electronic device, and a storage medium. The redundant environment in the method may comprise a master module and a slave module having a master-slave relationship, and the method is applied to the slave module. The method may comprise: on the basis of the consistency between master module file information and slave module file information, the slave module determines whether a slave module file needs to be updated; then the slave module acquires an update file from the master module, and generates updated slave module file information; and upon determining that the slave module file information is consistent with the master module file information, the slave module performs update on the basis of the updated file.

Classes IPC  ?

• G06F 16/23 - Mise à jour
• G06F 16/178 - Techniques de synchronisation des fichiers dans les systèmes de fichiers

Abrégé

The present application relates to the technical field of high-voltage direct-current power transmission, and provides a restart method and control device for a direct-current line fault of a high-voltage direct-current power transmission system. When a ground fault occurs in a direct-current line, the restart method comprises: at a first restart stage, controlling a faulty direct-current pole to be restarted; when the restart frequency is reached but the restart is still not successful, if a dual direct-current pole power command value is greater than the maximum deliverable power of a non-faulty direct-current pole, at a second restart stage, adjusting the dual direct-current pole power command value to be the maximum deliverable power of the non-faulty direct-current pole, and controlling the faulty direct-current pole to be restarted. The controlling the faulty direct-current pole to be restarted comprises: controlling at least one current converter at each of two ends of the ground fault to continue to operate, and determining direct current reference values of the converters; on the basis of the direct current reference values and within a deionization time, controlling the direct current of the converters to be equal or the difference to be smaller than a first current threshold, or controlling the direction current of the converters to be zero; and increasing the direct-current voltage and/or the direct-current power of at least one converter within a restart time.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
• H02J 3/50 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante déphasée
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A temperature control system and method. The temperature control method comprises: a temperature controller (11), a pipe (32), an air supply device (33), and at least two liquid temperature control devices including a first liquid temperature control device (34) and a second liquid temperature control device (35). The first liquid temperature control device (34) is mounted inside a first device to be temperature-controlled (36), and the second liquid temperature control device (35) and the air supply device (33) are mounted inside a second device to be temperature-controlled (37); the temperature controller (11), the pipe (32), and the at least two liquid temperature control devices form a temperature control loop; the temperature controller (11) is used for performing temperature control on the first device to be temperature-controlled (36) and the second device to be temperature-controlled (37) by means of the temperature control loop; and the air supply device (33) is used for performing temperature control on the second device to be temperature-controlled (37). On the basis that one temperature controller (11) performs temperature control on two devices to be temperature-controlled, temperature control of the second device to be temperature-controlled (37) can be performed by means of the air supply device (33), thereby meeting different temperature requirements of two devices to be temperature-controlled.

Classes IPC  ?

• G05D 23/20 - Commande de la température caractérisée par l'utilisation de moyens électriques avec un élément sensible présentant une variation de ses propriétés électriques ou magnétiques avec les changements de température

Abrégé

Disclosed in the present invention are a carbon emission reduction and carbon sink increase path coordination and optimization method and system. The method comprises: on the basis of a given carbon emission target value and a given carbon sink target value, generating a carbon emission time series trajectory and a carbon sink time series trajectory; by taking the carbon emission time series trajectory as an input, performing overall coordination of emission reduction measures by means of an optimal distribution of carbon emission budgets between departments/industries and the coordination and optimization of carbon emission reduction implementation paths of the departments/industries; by taking the carbon sink time series trajectory as an input, performing overall coordination of carbon sink increase approaches by means of an optimal distribution of a carbon sink demand between a technical carbon sink and a natural carbon sink and the coordination and optimization on two sink increase approach implementation paths; and constructing an objective function, and performing carbon trajectory optimization and final carbon state optimization on the basis of a carbon emission reduction path optimization result and a carbon sink increase path optimization result. In the present invention, the spatio-temporal complementary characteristics of carbon emission reduction and carbon sink increases are used to reduce the total economic cost within a transformation period, the influence of complex nonlinear factors can be reflected, and an optimization result is not prone to changing greatly along with tiny changes in parameters.

Classes IPC  ?

• G06Q 10/047 - Optimisation des itinéraires ou des chemins, p. ex. problème du voyageur de commerce
• G06Q 50/06 - Fourniture d’énergie ou d’eau
• G06Q 50/26 - Services gouvernementaux ou services publics

Abrégé

The present application discloses a high voltage direct current transmission valve group, a series circuit, a system, a control method, and a control device. By configuring different connection modes of a voltage source converter or a bridge uncontrolled rectifier circuit, a direct current circuit breaker, a first valve, an energy consumption circuit and a bypass switch, online input, online exit and fault exit of the voltage source converter without full-range voltage regulation capability are realized. In addition, during a fault, the freewheeling current of the first valve is used for reducing the stress when the direct current circuit breaker is disconnected, so that the high voltage direct current transmission valve group formed by the direct current circuit breaker having a low voltage level is connected in series in an ultra high voltage direct current transmission system, and compared to using a modular multi-level converter structure having half-bridge sub-modules and full-bridge sub-modules, the loss is reduced, the fault isolation performance is better. The present application is more suitable for a multi-terminal ultra high voltage flexible or hybrid direct current transmission system and a direct current grid for long-distance transmission.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

A receiving-end alternating-current fault ride-through method and apparatus for a power transmission system, and a device and a storage medium. The method comprises: when a fault occurs in a receiving-end power grid (50), acquiring a fault category of the receiving-end power grid (201); if the fault category indicates that a first fault has occurred, reducing to a target voltage a first direct-current voltage output by a receiving-end converter station (40) to a direct-current line (30) (202); and when a second direct-current voltage output by a transmitting-end converter station (20) to the direct-current line is less than a first preset voltage, reducing, from an initial current to a target current, a direct current output by the transmitting-end converter station to the direct-current line, so that a direct-current power transmission system realizes fault ride-through (203). By means of the method, system overvoltage can be prevented, and the transmitting-end converter station senses, in a timely manner, the first fault that has occurred in the receiving-end power grid, and adjusts the current on a direct-current side in a timely manner, thereby preventing further deterioration of the fault; and the whole process does not rely on inter-station communication, and thus there is no impact of a long delay caused by a long-distance direct-current line, so that the safety stability is relatively high, and a fault ride-through requirement can be well met.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
• G01R 31/52 - Test pour déceler la présence de courts-circuits, de fuites de courant ou de défauts à la terre

Abrégé

The present application provides an islanded system for flexible direct current transmission of new energy and a black start method therefor. The islanded system for flexible direct current transmission of new energy comprises a sending end connection transformer, a sending end converter valve, a direct current circuit, a receiving end converter valve, a starting resistor and a bypass isolator therefor, a receiving end connection transformer, and an energy storage device; the energy storage device is in parallel connection with a low-voltage winding side of the receiving end connection transformer, and the receiving end connection transformer is configured as a multi-winding connection transformer. According to some embodiments, by means of configuring the energy storage device in a receiving end converter station and directly connecting same to the low-voltage winding side of the multi-winding connection transformer, a multi-stage boosting transformer is omitted, and the means of energy storage access is effectively simplified. When the islanded system for flexible direct current transmission of new energy is isolated from a receiving end alternating current power grid, the energy storage device can control and maintain an alternating current side voltage of the receiving end converter station. When the system finishes a black start, voltage and frequency support can be provided for the receiving end alternating current power grid.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Produits et services

computer software, recorded; AC/DC inverters; ultracapacitors for energy storage; integrated circuits; Semiconductor elements; inverters [electricity]; Battery compensation chargers; Remote controls; converters, electric; frequency converters; AC/DC converters; condensers [capacitors]; current rectifiers; electric installations for the remote control of industrial operations; electric control devices for energy management; Sodium-sulfur batteries; All-solid-state batteries; auxiliary battery packs; Factory automation software; Industrial automation controls; Industrial automation software.

Abrégé

Disclosed in the present invention are a collaborative optimization method and system for multi-region energy storage and thermal power participation adequacy preventive control. The method comprises: setting an energy-storage total target outflow electricity quantity of each region; generating a feasible path library of an energy-storage charging and discharging policy of each region; selecting a reference path of each region, and constructing an energy-storage path set; under a given energy-storage path set, optimizing a global thermal power startup and shutdown policy; optimizing the energy-storage charging and discharging policy of each region without changing policies of other regions; using an optimal path of each region to update the energy-storage path set; determining whether the energy-storage path set or the number of iterations meets a preset convergence condition; if the energy-storage path set or the number of iterations meets the preset convergence condition, proceeding to the next step, otherwise, continuing to optimize the global thermal power startup and shutdown policy; and optimizing and outputting an energy-storage charging and discharging and thermal power startup and shutdown policy. The present invention can take power-electricity quantity coupling characteristics and startup and shutdown characteristics into comprehensive consideration to realize collaborative optimization of an energy-storage scheduling plan and a thermal power startup and shutdown plan within a given time scale, thereby effectively preventing and controlling operation risks of a power grid, and reducing scheduling control costs.

Classes IPC  ?

• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie
• H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs
• H02J 3/06 - Commande du transfert de puissance entre réseaux connectésCommande du partage de charge entre réseaux connectés
• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

Provided in the present application is a method for converting an object-oriented structured code. A syntax tree of a current structured code can be determined on the basis of a current programming standard, and a conversion rule of the structured code and a target language to be converted into is constructed. At the same time, in a memory, a data region and an object region are allocated, an offset address of a variable in the data region is determined, and finally, from the structured code, an executable file and a variable table file in the target language are generated. According to the method provided in the present application, by means of features such as encapsulation, polymorphism, and inheritance, online efficient incremental updating of the object-oriented structured code is achieved, reducing code complexity and improving reusability of a program.

Classes IPC  ?

• G06F 8/41 - Compilation
• G06F 8/51 - Source à source

Abrégé

The present application provides a code generation method and apparatus, an electronic device, and a non-transitory computer readable storage medium. The code generation method comprises: constructing a structured text code dataset conforming to a preset industrial control international standard language; using the structured text code dataset to train a preset model; and on the basis of input data of a user, using the trained model to generate a structured text code conforming to the industrial control international standard language. According to embodiments of the present application, the structured text code dataset conforming to the international standard in the field of industrial control is first constructed, and the constructed structured text code dataset is used to train a large-model-based situational code automatic generation model (i.e., an open-source low-parameter large model), so that the large-model-based situational code automatic generation model can output a structured text language code conforming to the standard.

Classes IPC  ?

• G06F 8/35 - Création ou génération de code source fondée sur un modèle

Produits et services

Computers; computer software, recorded; computer peripherals; modems; signal remote control power equipment; power line carrier communications systems; complete electrical calibration equipment; electricity meters; dynamometers; relays, electric; distribution consoles [electricity]; distribution boards [electricity]; automation systems for power plants; industrial remote control power devices; control system for nuclear power stations; cables, electric; materials for electricity mains [wires, cables]; regulating apparatus, electric; couplings, electric; instrument transformer; integrated circuits; inverters [electricity]; current rectifiers; high-voltage explosion-proof distribution equipment; electric apparatus for commutation; battery chargers.

Abrégé

10224466102244661020113355201133551010). In the hybrid converter, the full-controlled converter bridge arms are shared, so that the number of used fully-controlled semiconductor devices is reduced to the greatest extent while the problem of commutation failure is solved. Therefore, the overall cost of the converter is reduced, the reliability thereof is improved and the workload of operation and maintenance is reduced.

Classes IPC  ?

• H02M 7/12 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 7/219 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

Disclosed in the present application are a data synchronization method and system for a redundant device, and a storage medium and an electronic device. The data synchronization method comprises: a target device sending a data synchronization request to a data source device; according to first operation data from the data source device, starting the target device; and according to second operation data from the data source device, controlling the target device and the data source device to synchronously operate, wherein the first operation data is generated by the data source device according to the data synchronization request, and the second operation data is obtained by means of the data source device periodically updating the first operation data. In the present application, the target device and the data source device can synchronously operate by means of the first operation data and periodically updated second operation data of the data source device, and an out-of-step device can be re-synchronized in a timely manner by means of the periodically updated second operation data of the data source device.

Classes IPC  ?

• G06F 11/16 - Détection ou correction d'erreur dans une donnée par redondance dans le matériel

Abrégé

Disclosed in the present application are a remote protection information transmission system and method based on a transparent transmission link. The system comprises a main station and a transformer substation, wherein the transformer substation comprises a transparent proxy module and a plurality of protection apparatuses, the main station is connected to the transparent proxy module, and the transparent proxy module is connected to the plurality of protection apparatuses; and the transparent proxy module is configured to send first specification data to a corresponding protection apparatus according to a forwarding command for the first specification data that is sent by the main station, and send a forwarding command for second specification data to the main station after receiving the second specification data sent by the protection apparatus and a communication connection number thereof.

Classes IPC  ?

• H04L 67/562 - Courtage des services de mandataires

Abrégé

Disclosed are a sub-synchronous oscillation emergency control method and system based on a converter direct-current capacitor. The method comprises: determining whether a frequency component with the maximum amplitude of direct-current capacitor energies of wind farms exceeds a threshold value to determine whether sub-synchronous oscillation occurs in a power grid or not; calculating a reference phase and relative phases of the wind farms, calculating oscillation energies of the wind farms on the basis of the frequency component with the maximum amplitude of the direct-current capacitor energies and the relative phases, and sequentially disconnecting grid-connected wind turbines of corresponding wind farms in a descending order of the oscillation energies for sub-synchronous oscillation emergency control. By analyzing the essential causes of power grid oscillation and determining the source of sub-synchronous oscillation from the perspective of oscillation energies, the sequence of emergency control objects can be quickly and effectively given when the sub-synchronous oscillation occurs, ensuring the safe and stable operation of a large-scale wind power grid-connected system.

Classes IPC  ?

• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

dtmaxdtmindtmaxdtmindtsetampampampsetampsetIampIampsetp1p2p3pNmaxminmin among the sequence subset; when (I) is satisfied, determining that a third discrimination condition is satisfied; on the basis of a differential motion equation, determining that the differential ratio characteristic is satisfied; and when the first discrimination condition or the second discrimination condition or the third discrimination condition is satisfied, and the differential ratio characteristic is satisfied, starting a differential protection action of a transformer. According to the method, the differential protection action of the transformer can be timely started, so that the transformer is protected.

Classes IPC  ?

• H02H 7/045 - Protection différentielle de transformateurs

Abrégé

Provided in the present application are a grid-forming control method for a wind power converter, and a wind power converter system. The wind power converter comprises a generator-side converter and a grid-side converter, which are connected in parallel on a direct-current side, wherein the grid-side converter includes an alternating-current filter. The generator-side converter keeps a conventional alternating-current control strategy unchanged, and the grid-side converter controls both a direct-current voltage and an alternating-current voltage thereof. The grid-side converter takes an output of a direct-current voltage control loop as a target value of a d-axis positive-sequence component of a grid-side current, and performs closed-loop control on each of positive-sequence and negative-sequence components of a capacitor branch voltage and current of the alternating-current filter and each of positive-sequence and negative-sequence components of the grid-side current by using a method for performing directional vector control on each of positive-sequence and negative-sequence voltages. An instruction value of a generator-side current is corrected by using amplitude control loops for the capacitor branch voltage of the alternating-current filter and the direct-current voltage, so as to balance power transmission between a generator side and a grid side. In the present application, a generator-side control strategy is kept unchanged, and grid-forming of a wind turbine generator is implemented only by means of modifying a grid-side control algorithm, such that continuous operation can be achieved under grid-side imbalance, thereby improving the power grid supporting capacity of the wind turbine generator.

Classes IPC  ?

• H02J 3/40 - Synchronisation d'un générateur pour sa connexion à un réseau ou à un autre générateur
• H02J 3/26 - Dispositions pour l'élimination ou la réduction des asymétries dans les réseaux polyphasés
• H02J 3/48 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante en phase

Abrégé

Provided in the present application are a control method and apparatus for a bipolar flexible direct-current power transmission system. A bipolar flexible direct-current power transmission system comprises an energy consumption device, and a new energy unit, a bipolar flexible direct-current unit and an alternating-current power grid which are sequentially connected, wherein the energy consumption device is connected to the bipolar flexible direct-current unit. The control method comprises: determining whether a bipolar flexible direct-current power transmission system has a fault; when the bipolar flexible direct-current power transmission system has a fault, determining whether a bipolar flexible direct-current unit is single-pole blocked or whether an alternating-current power grid has a fault; when the bipolar flexible direct-current unit is single-pole blocked or the alternating-current power grid has a fault, determining whether the bipolar flexible direct-current unit has surplus power; and when the bipolar flexible direct-current unit has surplus power, according to the relationship between the surplus power and the maximum available power for energy consumption, confirming whether to execute energy consumption control or execute sending-end active alternating-current voltage control.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

Provided in the present application are a grid-forming voltage source converter system and a multi-objective control method. The grid-forming voltage source converter system comprises a power generation unit, a load unit, a grid-forming converter and a control device, wherein the power generation unit, the load unit, and an alternating-current side of the grid-forming converter are connected in parallel at a common connection point; the grid-forming converter controls the direct-current voltage of the grid-forming converter while establishing the voltage of the common connection point; when the voltage amplitude of the common connection point changes, the active power of the power generation unit generates an active increment on the basis of an operating point, or the active power of the load unit generates an active increment on the basis of the operating point; and the grid-forming converter generates, according to a change in the direct-current voltage, an instruction value of an active power flowing into the grid-forming converter, and by means of adjusting the voltage of the common connection point, the instruction value of the active power flowing into the grid-forming converter is equal to an actual value and is also equal to the difference between the active power of the power generation unit and the active power of the load unit, thereby stabilizing the direct-current voltage of the grid-forming converter.

Classes IPC  ?

• H02J 3/40 - Synchronisation d'un générateur pour sa connexion à un réseau ou à un autre générateur
• H02J 3/48 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante en phase
• H02J 3/26 - Dispositions pour l'élimination ou la réduction des asymétries dans les réseaux polyphasés

Abrégé

Disclosed in the present invention are a blockchain-based method and apparatus for selecting a rotating proxy node from load market entities. The method comprises: on the basis of blockchain technology, constructing a foundation platform for load entities participating in power transactions; after the load entities access the platform, correspondingly creating entity nodes on a blockchain system, deploying corresponding node types, and using a smart contract function to deploy a proxy node optimization algorithm in the blockchain system; according to computing powers of the load entities participating in the market, setting the difficulty of a function that needs to be solved, and constructing a conversion relationship between the computing powers and points of the market entities on the basis of a strategy for rotating election of a proxy; and within a selection cycle, compiling statistics on the computing powers contributed by the load entities in a solving process, converting the computing powers into points, selecting a proxy node according to the ranking of the points, then updating the points, and entering the next selection cycle. By means of the present invention, market information acquisition amounts of market entities on a load side can be balanced, and the operation safety of a power system can be improved.

Classes IPC  ?

• H04L 67/12 - Protocoles spécialement adaptés aux environnements propriétaires ou de mise en réseau pour un usage spécial, p. ex. les réseaux médicaux, les réseaux de capteurs, les réseaux dans les véhicules ou les réseaux de mesure à distance

Abrégé

Provided in the present application are a power control method and apparatus for a flexible direct-current transmission system. The flexible direct-current transmission system comprises an external sending-end system and a flexible direct-current electricity transmission system, the flexible direct-current electricity transmission system comprising a sending end. The power control method for a sending end comprises: when a flexible direct-current transmission system requires power regulation, controlling a sending end to enter an emergency control mode, and regulating the frequency of an output voltage of the sending end, so as to regulate active power transmission of the flexible direct-current transmission system, thereby realizing power regulation of the flexible direct-current transmission system. When a set measurement value of the external sending-end system meets a set threshold value or a set measurement value measured by the flexible direct-current electricity transmission system meets the set threshold value, or when the external sending-end system receives a communication instruction, the external sending-end system is controlled to enter a fixed-frequency operation mode.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

A distributed traveling wave fault location method and system, and an electronic device and a storage medium. The method comprises: numbering traveling wave collection apparatuses, which are dispersedly installed on a line, and forming an adjacency information matrix according to installation positions of the traveling wave collection apparatuses and a line length parameter (S100); receiving a fault traveling wave current waveform of each traveling wave collection apparatus, extracting a traveling wave front moment according to the fault traveling wave current waveform, and selecting, as a reference traveling wave collection apparatus, a traveling wave collection apparatus at which a traveling wave front arrives first (S200); correcting the adjacency information matrix on the basis of traveling wave front moment data (S300); acquiring all adjacent traveling wave collection apparatuses of the reference traveling wave collection apparatus according to the corrected adjacency information matrix, and classifying the adjacent traveling wave collection apparatuses into an upstream adjacency group and a downstream adjacency group (S400); executing traveling wave location on both the upstream adjacency group and the downstream adjacency group, so as to obtain two location results (S500); and according to the location results of the upstream adjacency group and the downstream adjacency group, determining an adjacency group where a fault is located, and determining a final location result (S600).

Classes IPC  ?

• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux

Abrégé

The present application provides a high-voltage direct-mounted flexible alternating current loop closing device. The high-voltage direct-mounted flexible alternating current loop closing device comprises three phases of converter chains and three multi-winding transformers; the three phases of converter chains are connected to a first alternating current system and a second alternating current system; each phase of converter chain comprises N active sub-modules connected in series and a series reactor, and N is an integer greater than or equal to 1; each multi-winding transformer comprises a primary winding and N first secondary windings, and the N first secondary windings are connected to the N active sub-modules in one-to-one correspondence; the primary winding of each multi-winding transformer is connected to the first alternating current system or the second alternating current system.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
• H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau

Abrégé

start_flagmodactmodmod comprises dynamic-state primary frequency modulation locking steady-state AGC, the steady-state AGC locking the dynamic-state primary frequency modulation, the steady-state AGC and the dynamic-state primary frequency modulation being superimposed in both the forward direction and the backward direction, the steady-state AGC and the dynamic-state primary frequency modulation being superimposed in the same direction and the dynamic-state primary frequency modulation being locked in the backward direction, and the steady-state AGC and the dynamic-state primary frequency modulation being superimposed in the same direction and the steady-state AGC being locked in the backward direction. By means of the method, the safety and stability of large-scale new energy when same accesses a power grid are improved, and the active supporting capacity of a new-energy station is improved.

Classes IPC  ?

• H02J 3/48 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante en phase
• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux

Abrégé

The present application provides a current breaking apparatus and a control method therefor, and a direct-current power transmission and distribution system. The current breaking apparatus comprises a first through-flow branch, a second through-flow branch, a first transfer branch, a second transfer branch, an energy consumption branch, a reactor and a self-excitation module, wherein the first through-flow branch comprises a first mechanical switch; the second through-flow branch comprises a second mechanical switch; the second transfer branch comprises a capacitor; the energy consumption branch comprises an energy absorption device; the reactor is provided in the first through-flow branch and/or the first transfer branch and/or the second transfer branch; the self-excitation module is provided in the first through-flow branch or the first transfer branch or the second transfer branch; when a short-circuit fault occurs in a power line, the self-excitation module outputs a pulse square-wave voltage, and excites the capacitor and the reactor to oscillate to generate an oscillation current having the same amplitude as a fault current and having a direction opposite to that of the fault current, so as to turn off the first mechanical switch and the second mechanical switch; and the energy absorption device is used for consuming energy.

Classes IPC  ?

• H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
• H02H 3/087 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge pour des systèmes à courant continu
• H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu

Abrégé

Provided in the present application are an energy supply device and a converter valve. The energy supply device comprises a damping circuit, a rectifying circuit, a voltage amplitude limiting unit, a first diode, a first capacitor, a direct current-direct current isolation unit, and a second capacitor. One end of the damping circuit is connected to a first output end of the rectifying circuit. The voltage amplitude limiting unit is connected in parallel to the rectifying circuit. The anode of the first diode is connected to the first output end of the rectifying circuit, and the cathode thereof is connected to one end of the first capacitor. The other end of the first capacitor is connected to a second output end of the rectifying circuit. The direct current-direct current isolation unit is connected in parallel to the first capacitor. The second capacitor is connected in parallel to an output end of the direct current-direct current isolation unit. Output ends of the second capacitor serve as a positive output end and a negative output end of the energy supply device, the negative output end being connected to a second input end of the rectifying circuit.

Classes IPC  ?

• H02M 7/217 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 1/00 - Détails d'appareils pour transformation
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

The present application provides a current output device, and a current simulation system and a control method therefor. The current output device comprises at least two current sources; the at least two current sources output at least two current amplitude weights, wherein any one of the at least two current sources comprises a direct current source and a direct current unit, the direct current source being connected to the direct current unit; the direct current unit comprises two output terminals to be used as a first output terminal and a second output terminal of the corresponding current source; the at least two current sources are connected to each other by means of respective first output terminals and are connected to each other by means of respective second output terminals to implement mutual parallel connection; the current sources outputting current amplitude weights output level currents or zero-level currents of the corresponding current amplitude weights by means of corresponding direct current units; and the current output device outputs any current by means of a parallel combination of current sources outputting different current amplitude weights.

Classes IPC  ?

• H02J 1/10 - Fonctionnement de sources à courant continu en parallèle

Abrégé

Provided in the present application are a voltage device, a voltage simulation apparatus, and a control method. The voltage device comprises at least two voltage sources, wherein output ends of the voltage sources are sequentially connected in series; the voltage sources each comprise a direct-current voltage source and a voltage selection unit; the direct-current voltage source is connected to the voltage selection unit; the voltage selection unit comprises a first output terminal and a second output terminal, which serve as the output end of the voltage source; the at least two voltage sources each have a corresponding voltage amplitude weight; voltages outputted by the at least two voltage sources by means of the voltage selection units include level voltages or zero-level voltages corresponding to the voltage amplitude weights; and by means of a series combination of voltage sources having different voltage amplitude weights, the voltage device outputs any voltage. A voltage fitting algorithm based on approximation of voltages having different weights solves the problem of existing experimental equipment being unable to accurately output complex changing voltages, a simple topological structure and high control precision are achieved, and a microsecond-level tracking simulation can be performed on various rapidly changing complex voltage waveforms.

Classes IPC  ?

• H03K 3/57 - Générateurs caractérisés par le type de circuit ou par les moyens utilisés pour produire des impulsions par l'utilisation d'un élément accumulant de l'énergie déchargé dans une charge par un dispositif interrupteur commandé par un signal extérieur et ne comportant pas de réaction positive le dispositif de commutation étant un dispositif à semi-conducteurs
• H02M 3/145 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande

Abrégé

Disclosed in the present invention is a magnetic circuit adaptive power grid power flow controller. The controller comprises three control components, wherein the three control components are all connected in series in a three-phase line to be subjected to power flow control; each control component comprises a closed core, and a primary winding coil and a secondary winding coil which are respectively wound around a primary side and a secondary side of the closed core, and the winding directions of the primary winding coil and the secondary winding coil are opposite; and coil taps at two ends of each of the primary winding coil and the secondary winding coil are respectively connected in series in two lines of each phase of the three-phase line. The present invention can be used for adjusting a power flow distribution of each phase of three phases of two power transmission and distribution lines, and can realize adaptive or active control, thereby ensuring the safe and stable operation of a power grid.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

1233 turns, and the fourth coil winding is connected to an input end of a sampling resistor and an input end of a zero-sequence current secondary measurement loop by means of lead wires. The present invention can improve the precision, sensitivity and linearity of zero-sequence current measurement, improve the resistance to saturability and the loading carrying capacity, and reduce measurement dead zones.

Classes IPC  ?

• H01F 27/24 - Noyaux magnétiques
• H01F 38/38 - Transformateurs de mesure pour courant alternatif polyphasé

Abrégé

The present invention relates to an air-cooling variable-frequency converter, comprising a box body, the interior of which is divided into a left compartment, a middle compartment and a right compartment, wherein the box body is internally provided with an auxiliary control system, which is mounted in the left compartment, a variable-frequency converter valve and a multi-winding transformer, which are mounted in the middle compartment and are distributed at the front and the rear, a station transformer, which is mounted in the right compartment, and a heat dissipation system, which is used for performing heat dissipation on the interior of the box body; and each phase of the variable-frequency converter valve comprises several cascaded module units, which are designed in a flattened manner, input sides of the cascaded module units in the same phase are connected to secondary coils in the same phase of the multi-winding transformer, and output sides thereof are sequentially connected end to end in series by means of a connection bar. The present invention uses a modular design to make the overall structure of a converter valve simpler and more compact, thereby saving on an occupied space, improving the convenience for subsequent maintenance, and improving the stability of the converter valve during operation.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
• H05K 7/18 - Structure des bâtis ou des cadres

Abrégé

A monitoring system based on a digital converter station includes a first monitoring terminal deployed at a first-level monitoring side, a second monitoring terminal deployed at a second-level monitoring side, and a third monitoring terminal deployed at a third-level monitoring side; the monitoring terminal at each level includes a communication module, a human-machine interaction module, a device status monitoring module, a device alarm management module, a video fusion processing module, and a data transmission adjustment and control module.

Classes IPC  ?

• G06V 10/80 - Fusion, c.-à-d. combinaison des données de diverses sources au niveau du capteur, du prétraitement, de l’extraction des caractéristiques ou de la classification
• G06V 20/52 - Activités de surveillance ou de suivi, p. ex. pour la reconnaissance d’objets suspects
• H04L 43/0829 - Perte de paquets
• H04L 43/0864 - Retards de voyage aller-retour

Abrégé

Provided is a module overvoltage protection circuit, which relates to the technical field of voltage direct current transmission. The module overvoltage protection circuit comprises: a bridge structure module, the bridge structure module comprising multiple power devices and anti-parallel diodes thereof; a direct-current energy storage capacitor, the direct-current energy storage capacitor being connected in parallel with the bridge structure module; and an overvoltage protection circuit, the overvoltage protection circuit being connected between a positive electrode of the direct-current energy storage capacitor and a gate electrode of a power device, and the overvoltage protection circuit comprising multiple groups of first transient voltage suppression diodes and first isolation diodes which are connected in series. After a basis for an overvoltage determination is directly obtained from the direct-current energy storage capacitor, a short-circuit protection device is triggered to be switched on, to implement a module overvoltage protection function; this improves the problem of over-voltage protection refusal of a power device while not affecting an original working state of the circuit, and also reduces misoperation risk.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension
• H02M 1/088 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques pour la commande simultanée de dispositifs à semi-conducteurs connectés en série ou en parallèle
• H02H 7/12 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour convertisseursCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour redresseurs pour convertisseurs ou redresseurs statiques

Abrégé

Provided in the present application are a flexible alternating-current interconnection apparatus and a startup control method. The apparatus comprises: three phases of interconnection converter chains, and an energy supply unit, each phase of interconnection converter chain comprising N power balance sub-modules, M first-type full-bridge sub-modules and a reactor, wherein each power balance sub-module comprises a second full-bridge circuit, a second direct-current capacitor and a first bridge circuit; each first-type full-bridge sub-module comprises a first direct-current capacitor and a first full-bridge circuit, and a direct-current end of the first full-bridge circuit is connected to the first direct-current capacitor in parallel; alternating-current ends of the first bridge circuits of each phase of interconnection converter chain are connected to the energy supply unit, such that the energy supply unit performs a power exchange with the power balance sub-modules of each phase of interconnection converter chain; and when M is greater than 0, alternating-current ends of the second full-bridge circuits of each phase of interconnection converter chain and alternating-current ends of the first full-bridge circuits thereof are connected to the reactor in series to form a series branch, one end of the series branch being connected to a first alternating-current power grid, and the other end of the series branch being connected to a second alternating-current power grid.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 3/06 - Commande du transfert de puissance entre réseaux connectésCommande du partage de charge entre réseaux connectés

Abrégé

The present application discloses a monitoring system and method based on a digital converter station. The monitoring system comprises a first monitoring terminal deployed at a first-level monitoring side, a second monitoring terminal deployed at a second-level monitoring side, and a third monitoring terminal deployed at a third-level monitoring side. The monitoring terminal at each level comprises a communication module, a human-computer interaction module, a device state monitoring module, a device alarm management module, a video fusion processing module, and a data transmission regulation and control module. The video fusion processing modules are respectively deployed at the monitoring terminals at all levels, so that the monitoring terminals at all levels can locally respond to monitoring retrieval requests of users at all levels; a station end does not need to completely respond to the monitoring retrieval requests of the users at all the levels, a user can directly view a video fusion picture from the local and does not need to retrieve the video fusion picture from a remote end, and therefore, when network bandwidth resources are limited, network delay can be effectively reduced, the real-time performance of video picture display is improved, and the use effect of a video fusion application and user experience are improved.

Classes IPC  ?

• H04N 7/18 - Systèmes de télévision en circuit fermé [CCTV], c.-à-d. systèmes dans lesquels le signal vidéo n'est pas diffusé

Abrégé

Disclosed in the present invention are a control method and system for an output transformer of a thyristor current source-type static frequency converter. The method comprises: on the basis of determining the resistance of an output loop at the high-voltage side of the frequency converter, determining a relation between the output amplitude of the direct current at the high-voltage side and the maximum duration; further determining a relation between the starting torque of the frequency converter and the maximum duration; and finally calculating the maximum angle of rotation of the unit that can be dragged by the frequency converter when the frequency converter directly operates together with the output transformer, and determining an operation mode of a bypass knife switch at the output side of the frequency converter. According to the present invention, the alternating current rated parameters of the transformer are applied to direct current transformation, and on this basis, the rotation angle of the unit which can be dragged by the frequency converter before the transformer is saturated is determined, so as to determine whether the unit needs to be started in a bypass output transformer mode or not, thereby greatly reducing the number of times of opening and closing of the bypass knife switch, effectively avoiding a starting failure caused by an anomaly of the bypass knife switch when the frequency converter starts the unit, and increasing the success rate of starting the unit.

Classes IPC  ?

• H02M 5/257 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p. ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs
• H02P 9/08 - Commande du circuit de la génératrice au cours du démarrage ou du ralentissement du moyen d'entraînement, p. ex. pour amorcer l'excitation

Abrégé

Disclosed in the present invention are a thermal expansion compensation fiber optic insulator and a method for using same. The thermal expansion compensation fiber optic insulator comprises an insulating assembly; the insulating assembly comprises a hanging flange, an expansion joint, pressing members, a fixing flange, and an insulator; one end of the expansion joint is connected to the hanging flange, and the other end of the expansion joint is connected to the fixing flange; the pressing members are mounted on the expansion joint; and the insulator matches the fixing flange. According to the device, by means of cooperation between the expansion joint and the pressing members, complete filling of a glue solution is achieved in a core body of the fiber optic insulator, thereby avoiding the problems of glue solution leakage, fiber optic pressing and the like, and improving the insulating property.

Classes IPC  ?

• H01B 17/34 - Isolateurs à liquide, p. ex. à huile

Abrégé

Disclosed in the present invention are a hosting system for scenarios and configurations in a power system, and a hosting method. The hosting system comprises a scenario and configuration management module, which is used for providing, for a cluster, the management of an operating system environment, a business scenario, an application and a configuration; a node hosting module, which is used for providing, for a node, business processing full-hosting of an operating system environment, a business scenario, an application and a configuration; an open protocol API adaptation module, which is used for providing heterogeneous-system-based multi-language application calling; and an interface service module, which is used for providing, for the whole system, the management of an operating system environment, a business scenario, an application and a configuration, and an API data interface service that is host and managed by the node. By means of the present invention, an auditing effective process for an operating system environment, a business scenario and a configuration, and a full-hosting mechanism of a business cluster are established, thereby solving the problems of a system scenario and a configuration being published at will and being difficult to manage in a centralized manner, and thus realizing the unified and ordered full-hosting management of scenarios and configurations in a power system.

Classes IPC  ?

• H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
• G06F 21/53 - Contrôle des utilisateurs, des programmes ou des dispositifs de préservation de l’intégrité des plates-formes, p. ex. des processeurs, des micrologiciels ou des systèmes d’exploitation au stade de l’exécution du programme, p. ex. intégrité de la pile, débordement de tampon ou prévention d'effacement involontaire de données par exécution dans un environnement restreint, p. ex. "boîte à sable" ou machine virtuelle sécurisée

Abrégé

Provided in the present application are a full-compensation arc suppression system and method based on adjustable reactance. The arc suppression system comprises a first contactor, a second contactor, a third contactor, a first adjustable reactor, a second adjustable reactor, and a line selection and arc suppression apparatus. A three-phase voltage of a bus, a zero sequence voltage and a zero sequence current are inputted into an input end of the line selection and arc suppression apparatus; an output end of the line selection and arc suppression apparatus is connected to the first contactor, the second contactor and the third contactor, and is used for controlling the switching on and off of the first contactor, the second contactor and the third contactor; and the output end is connected to the first adjustable reactor and the second adjustable reactor, and is used for controlling voltage division coefficients of the first adjustable reactor and the second adjustable reactor, such that the arc suppression system outputs a designated amplitude and phase of a voltage.

Classes IPC  ?

• H02H 9/08 - Limitation ou suppression des courants de défaut à la terre, p. ex. bobine Petersen
• H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits

Abrégé

Disclosed in the present invention are an immersion energy storage battery thermal management system and a fire control method. The immersion energy storage battery thermal management system comprises a battery cabinet, an immersion circulation system, and a battery management system; the battery cabinet comprises at least one battery box, and a plurality of battery cells immersed in a cooling liquid are housed in each battery box; the immersion circulation system is connected to the battery boxes, respectively; the battery management system is used for determining whether irreversible thermal runaway occurs in a battery cell, and when irreversible thermal runaway occurs in a certain battery cell, controlling the immersion circulation system to intermittently pump the cooling liquid into the battery box where the battery cell is located; within a time interval between every two times of pumping of the cooling liquid, it is ensured that the top of the battery cell in which the thermal runaway occurs is always covered by the cooling liquid. The present invention can overcome the problems and defects of high fire extinguishing costs, poor response timeliness, low reliability, and complex structures of existing energy storage battery fire protection systems.

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid
• H01M 10/6569 - Fluides qui subissent un changement ou une transition de phase liquide-gaz, p. ex. évaporation ou condensation
• H01M 10/655 - Structures solides pour l'échange ou la conduction de la chaleur
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 10/6556 - Composants solides comprenant des canaux d'écoulement ou des tubes pour un échange de chaleur

Abrégé

A water cooling system leakage monitoring method, comprising: acquiring liquid level value change data, and constructing a scale function; decomposing the liquid level value change data into low-order high-frequency components and low-order low-frequency components by using a wavelet transform; reconstructing a high-order scale function by using the low-order low-frequency components; obtaining a liquid level change trend curve according to the high-order scale function, and monitoring, according to the liquid level change trend curve, whether leakage occurs. By means of a wavelet transform method, liquid level fluctuations caused by temperature can be filtered so as to obtain liquid level change trend data, so that the leakage of a valve cooling system can be effectively and accurately determined, defects of valve cooling monitoring means in the prior art can be overcome, and the stability of the valve cooling system is improved.

Classes IPC  ?

• G01M 3/26 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par mesure du taux de perte ou de gain d'un fluide, p. ex. avec des dispositifs réagissant à la pression, avec des indicateurs de débit
• G01F 23/80 - Dispositions pour le traitement des signaux

Abrégé

Disclosed in the present invention are a method and system for evaluating an adjustable capability of an electric vehicle cluster. In the present invention, a charging load curve is constructed by means of charging order information, and a ratio of a peak-valley difference to an average load value, a load fluctuation rate, and a valid order proportion are calculated on the basis of the charging load curve and the charging order information, so that the evaluation of an adjustable capability of an electric vehicle cluster is implemented, and the formulation of an electric vehicle cluster dispatching policy by a power grid can be effectively supported. The present invention has important practical significance in promoting an adjustable load to participate in power grid dispatching, and improving the adaptability of the power grid to the access of large-scale electric vehicles and the capability to consume new energy.

Classes IPC  ?

• G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projetsPlanification d’entreprise ou d’organisationModélisation d’entreprise ou d’organisation

Abrégé

Disclosed in the present application are a battery energy storage system state-of-charge balance control method and apparatus, belonging to the field of battery energy storage system state-of-charge control. The control method comprises: acquiring an SOC value of each cascade battery module of a battery energy storage system and sorting same; acquiring a direct-current side voltage of each cascade battery module of the battery energy storage system, and determining the number of carriers n of the current system; acquiring charging and discharging states of the battery energy storage system, and, according to the charging and discharging states, the number of carriers n and the sorting information of the SOC values, selecting n input battery modules; and performing carrier phase-shift modulation on the n input battery modules. The control apparatus comprises a first acquisition module, a second acquisition module, a third acquisition module and a modulation module.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 7/06 - Régulation du courant ou de la tension de charge utilisant des tubes à décharge ou des dispositifs à semi-conducteurs

Abrégé

Disclosed in the present invention are an adaptive distance protection method and system. The method comprises: extracting electrical quantity transient time domain information at a relay location; and determining a directional characteristic of a fault by utilizing the electrical quantity transient time domain information, and when the directional characteristic is determined to be a positive direction, expanding a distance protection action range, and when the directional characteristic is determined to be a negative direction, reducing the distance protection action range. The advantages of the present invention lie in that with respect to the problem of an abnormal distance protection action regarding a renewable energy station or a flexible direct-current output line, the direction of a fault is determined by utilizing electrical quantity transient time domain information at a relay location, and distance protection elements with different protection ranges are adaptively used, such that a correct distance protection action is ensured.

Classes IPC  ?

• H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux

Abrégé

The present application relates to the technical field of flexible direct-current power transmission, and discloses an adaptive suppression method and system for flexible direct-current high-frequency resonance. The method comprises: connecting notch filters and a counter into a voltage feedforward control link of a converter; measuring harmonic contents of a grid-side bus voltage of the converter in real time, setting a first preset threshold, and outputting a harmonic frequency exceeding the first preset threshold and having a highest content; outputting a second-order notch filter transfer function to the notch filters according to the harmonic frequency; setting a second preset threshold and a third preset threshold to obtain a comparison result, the counter performing counting according to the result and determining the switching on and off of the notch filters. The system comprises a harmonic detection unit, a notch parameter selection unit and a harmonic suppression unit. According to the present application, high-frequency harmonic components can be quickly suppressed, the risk of multi-point high-frequency resonance that may occur due to changes in the operation mode of an alternating-current system is effectively reduced; moreover, the present application is simple in logic, small in calculation amount, and suitable for engineering application, and can provide a guarantee for the stable operation of a flexible direct-current power transmission system under all working conditions.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu
• H02J 3/01 - Dispositions pour réduire les harmoniques ou les ondulations
• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux

Abrégé

The present application provides a dual-converter parallel circuit and a control method and device therefor, and a direct current power transmission system. The dual-converter parallel circuit comprises a first converter, a second converter and a connecting circuit. The first converter comprises three first upper bridge arms and three first lower bridge arms, and each first upper bridge arm and each first lower bridge arm both comprise a first semi-controlled valve and a first fully-controlled valve which are connected in series. The second converter comprises three second upper bridge arms and three second lower bridge arms, and each second upper bridge arm and each second lower bridge arm both comprise a second valve. The connecting circuit comprises a third valve and a fourth valve.

Classes IPC  ?

• H02M 7/162 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont

Abrégé

The present application provides a bridge arm circuit having capacitor-assisted turn-off, a converter, a method, an apparatus and a system. The bridge arm circuit having capacitor-assisted turn-off comprises a main branch and an assisted turn-off branch. The main branch comprises a first semi-controlled valve. The assisted turn-off branch is connected in parallel with the main branch, the assisted turn-off branch comprising a power electronic switch and a first capacitor, connected in series; the power electronic switch bidirectionally conducts current, is bidirectionally controllable to turn on, and unidirectionally controllable to turn off.

Classes IPC  ?

• H02M 1/06 - Circuits spécialement adaptés pour rendre non-conducteurs les tubes à décharge ou les dispositifs à semi-conducteurs équivalents, p. ex. thyratrons, thyristors

Abrégé

The present application discloses an energy storage system structure for an AC power grid interconnection and a control method. The energy storage system structure for an AC power grid interconnection comprises: an energy storage battery unit; a first DC/AC converter device, a AC side of the first DC/AC converter device being connected to a first AC power grid, and positive and negative electrodes of a DC side of the first DC/AC converter device being respectively connected to positive and negative electrodes of the energy storage battery unit; and a second DC/AC converter device, a AC side of the second DC/AC converter device being connected to a second AC power grid, and positive and negative electrodes of a DC side of the second DC/AC converter device being respectively connected to the positive and negative electrodes of the energy storage battery unit.

Classes IPC  ?

• H02J 3/06 - Commande du transfert de puissance entre réseaux connectésCommande du partage de charge entre réseaux connectés

Abrégé

A stable control method and apparatus for an AC-DC hybrid power grid after DC blocking. The method comprises the following steps: grading a power grid operation means; calculating the maximum control measure quantity of a power grid frequency constraint, the minimum control measure quantity of a power grid voltage constraint, and the minimum control measure quantity of a power grid power angle constraint under each grade; and according to the calculated maximum control measure quantity of the power grid frequency constraint, the minimum control measure quantity of the power grid voltage constraint, and the minimum control measure quantity of the power grid power angle constraint under each grade, selecting the optimal control measure quantity to perform stable control on the power grid after DC blocking. In the method, the control measure quantity can be selected according to actual conditions to perform stable control on the AC-DC hybrid power grid after DC blocking of the power grid, the principle of a stable control policy calculation method is clear, simple, and direct, and analysis and calculation time can be shortened.

Classes IPC  ?

• H02J 3/06 - Commande du transfert de puissance entre réseaux connectésCommande du partage de charge entre réseaux connectés
• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

A two-terminal fault location method and system for a four-terminal line. The method comprises: identifying all intersection points of a four-terminal line, and calculating a line distance length between adjacent intersection points; in response to a line protection tripping signal, respectively calculating a virtual voltage and a virtual current of each intersection point; on the basis of analog quantity information and branch parameter information at each line protection installation position, calculating a virtual voltage converted to an intersection point which corresponds to the line protection installation position, and locating a region where a fault point is located; and on the basis of the line distance length of each region, locating the fault point using a two-terminal location algorithm. There is no need to add additional line parameter setting, such that the method is easily implemented in the existing line protection, and the accurate location can be realized in various fault situations.

Classes IPC  ?

• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux

Abrégé

The present application provides a method for determining the direction of current in a bridge arm of a modular multilevel converter, a control system, an electronic device, and a computer storage medium. The determining method comprises: determining the direction of current by using a first determining mode, wherein the first determining mode comprises taking the positive-negative property of a periodic variation of voltage of a capacitor in a bridge arm as the direction of the current, or, reversing the direction of the current according to a fixed period and taking a reversing result as the direction of the current. When the current in the bridge arm is small, the direction of the current in the bridge arm is determined according to the variation of the voltage of the sub-module capacitor in the bridge arm or reversing at the fixed period, such that the problem of bridge arm current sampling distortion caused by factors such as current sampling zero drift in the case of small current can be avoided.

Classes IPC  ?

• H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension

Abrégé

The present application relates to the field of electric automation, and provides a transformer state analysis method and system, a device, and a storage medium. The transformer state analysis method comprises: acquiring known data of a transformer, and calculating according to the known data to obtain missing data (S101); mapping the known data and the missing data to a three-dimensional model to form a digital twin (S103); performing real-time data synchronization on the digital twin and the transformer by means of variable-period data updating (S105); and acquiring state data of the transformer calculated by the digital twin so as to provide a control decision prompt (S107).

Classes IPC  ?

• G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
• G06F 113/08 - Fluides
• G06F 119/08 - Analyse thermique ou optimisation thermique

Abrégé

Disclosed in the present invention are a container perception-free starting method and system based on a serverless platform. The method comprises the following steps: analyzing a user request by using an interpreter, and sending the user request to a cold spare or hot spare queue; a processor performs security authentication on user request instructions of the cold spare queue and the hot spare queue, performs clustering analysis on the user requests passing the security authentication, and forwards to a container manager the user request instructions on which clustering analysis has been performed; the container manager is responsible for creating a container, calling a trigger function, and scheduling the container; and a resource monitor is responsible for creating, updating, and closing containers in a hot spare pool, including combining containers, decomposing a container having a memory or CPU exceeding a threshold value, and periodically starting and stopping a container. Compared with the prior art, the present invention has the characteristics of accelerating container initialization, depending on program package loading, and effectively saving resources.

Classes IPC  ?

• G06F 9/455 - ÉmulationInterprétationSimulation de logiciel, p. ex. virtualisation ou émulation des moteurs d’exécution d’applications ou de systèmes d’exploitation

Abrégé

The present application provides a converter control system and method, which are used for controlling a converter to simulate a synchronous generator. The system comprises a power synchronization control unit, an alternating-current voltage reference vector calculation unit and an alternating-current voltage instruction generation unit, wherein the power synchronization control unit is used for simulating a speed regulator and a mechanical inertia link of a synchronous generator and generating a reference phase; the alternating-current voltage reference vector calculation unit collects an inner electric potential vector and an alternating-current voltage vector and generates an alternating-current voltage reference vector; and the alternating-current voltage instruction generation unit generates a three-phase alternating-current voltage control instruction according to the alternating-current voltage reference vector and the reference phase. By means of the converter control system and method provided in the present application, the oscillation risk can be reduced without using current closed-loop control under steady state and small disturbance conditions, a power grid support characteristic consistent with that of a synchronous generator is simulated in both a steady state and a transient state, and the active adjustment of the impedance of a converter can be realized, thereby improving the grid connection adaptability.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

Disclosed in the present invention is a transient stability emergency control method in consideration of a direct current successive blocking time difference, comprising: obtaining a successive blocking time difference between a current blocking moment and a next blocking moment in a direct current successive blocking fault; determining whether the successive blocking time difference is within a predetermined independent event time difference range; if yes, taking a current blocking event and a next blocking event in the direct current successive blocking fault as mutually independent events, and separately carrying out fault response control by means of a predetermined single direct current blocking control strategy; otherwise, separately carrying out fault response control on corresponding current and next blocking events by means of a single direct current blocking control strategy, and adding a predetermined load control quantity. According to the present invention, by analyzing the law of effect of the time difference between multiple successive faults on the transient stability, emergency control measures after direct current successive blocking in different time difference ranges are distinguished, and emergency control for different successive blocking time differences under actual direct current successive blocking faults is carried out, thereby improving the emergency control reliability.

Classes IPC  ?

• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
• H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement

Abrégé

Disclosed in the present application are a method and apparatus for discriminating the consistency of receiving and sending delays of a differential channel, and an electronic device and a differential protection communication system, which are used for a host side or a slave side of a differential channel. The method comprises: calculating a channel delay of a differential channel; adjusting sampling data on two sides of the differential channel to a synchronous state; calculating, in real time, a variation amount of the channel delay, and when the variation amount of the channel delay is greater than a first threshold value, starting to discriminate the consistency of receiving and sending delays of the differential channel, so as to obtain a discrimination result of the consistency of the receiving and sending delays of the channel; and according to the discrimination result of the consistency of the receiving and sending delays of the channel, determining whether to lock differential protection.

Classes IPC  ?

• H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
• H02H 3/06 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion Détails avec reconnexion automatique

Abrégé

Provided are a control method and a control device for switching the trigger angle of a high-voltage direct-current transmission, used for switching a trigger angle control strategy for a high-voltage direct-current transmission. The method comprises: detecting a broadband component of a voltage or current on an alternating-current side or direct-current side of a converter of high-voltage direct-current transmission; judging whether the amplitude of the broadband component exceeds a first starting threshold; when the amplitude of the broadband component exceeds the first starting threshold, the converter of the high-voltage direct-current transmission switching to fixed trigger angle control.

Classes IPC  ?

• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

Provided are a method and apparatus for suppressing the broadband oscillation of a converter, and an electronic device and a storage medium, which are used for suppressing the oscillation of a converter system in a broadband range. The method comprises: in accordance with the system requirements of a converter, determining a frequency band range and a target impedance control value of broadband oscillation needing to be suppressed by the converter; calculating the broadband component of an alternating-current bus voltage of the converter in the frequency band range; performing coordinate transformation on the broadband component of at least the alternating-current bus voltage in the frequency band range, and then extracting a broadband feature quantity transformed to a direct-current side; when the amplitude of the broadband component of the alternating-current bus voltage in the frequency band range exceeds or equals the duration of a first starting threshold and is greater than or equal to a first time threshold, and after the broadband feature quantity passes through a phase compensation link and/or a proportioning link, superposing the broadband characteristic quantity to a direct current instruction value, to a direct current voltage instruction value or to an active power instruction value of the converter, and outputting the direct current instruction value, the direct current voltage instruction value or the active power instruction value to modulate the direct current, the direct current voltage or the active power.

Classes IPC  ?

• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux

Abrégé

The present application aims to provide a thyristor device tester. The thyristor device tester comprises a single-stage test apparatus and a multi-stage test matching apparatus, wherein the single-stage test apparatus is used for performing functional testing on a single thyristor stage; and the single-stage test apparatus is connected to the multi-stage test matching apparatus by means of an interface part for simultaneously performing the functional testing on multiple thyristor stages. On the basis of retaining the function of testing a single thyristor stage, the function of testing a valve module stage (multiple thyristor stages) is added, which not only can meet the requirements of single-thyristor-stage testing and fault analysis and reserve the advantages of light weight and easy carrying, but also can meet the requirement of simultaneously testing multiple thyristor stages, thereby improving the functional test efficiency during routine annual inspection, shortening the test and maintenance time, and increasing the direct current availability.

Classes IPC  ?

• G01R 31/26 - Test de dispositifs individuels à semi-conducteurs

Abrégé

Disclosed in the present invention are a method and system for online dynamic optimization and adjustment of a control object of each round of under frequency load shedding. According to the present invention, adaptability evaluation is performed on the actual controllable load total amount of each round, and a policy for adjusting a control object of each round is formulated on the basis that the actual controllable load total amount does not adapt to a controllable load amount needing to be adjusted of a round, achieving the optimization and adjustment of the control object. Therefore, the self-adaptability and accuracy level of an under frequency load shedding control policy are improved, the hidden danger that the control amount of under frequency load shedding may be insufficient or excessive in a mode that a control object of under frequency load shedding is fixed can be solved, and better technical support is provided for a third line of defense of power grid safety to fully play its due role.

Classes IPC  ?

• H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux

Abrégé

smaxmax, a current instruction reference value in the instruction current-limiting mode is calculated according to positive sequence voltage source series inductance characteristics, and said current instruction reference value is used as the current instruction reference value.

Classes IPC  ?

• H02J 3/16 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par réglage de puissance réactive
• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux

Abrégé

Disclosed in the present invention are a method and system for optimizing a direct current transmission limit within a planning period. The method of the present invention comprises: performing annual analysis within the planning period; obtaining annual maximum direct current transmittable power; performing unified monetization on abandoned power loss caused by incapability of transmitting direct current at full power, emergency control cost, outsourcing power cost and standby cost to form operation risk cost; calculating total risk cost under each group of risk threshold sequence in combination with multiple groups of risk threshold sequences which are randomly generated; constructing a direct current transmission limit sequence within the planning period by employing the annual maximum direct current transmittable power corresponding to the minimum total risk cost; and reasonably planning a direct current transmission limit, so as to realize seamless connection from planning to operation. Power system planning personnel can be guided to fully consider operation risks after direct current commissioning, thereby realizing power supply-power grid-direct current load collaborative development.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

Provided are a series-type multi-winding converter, a direct current transformer, and a control method. The series-type multi-winding converter comprises M converter chains (101, 102, ..., 10M) and a first isolation transformer (10c), wherein the M converter chains (101, 102, ..., 10M) are connected in series, a positive terminal of the first converter chain (101) and a negative terminal of the Mth converter chain (10M) constitute a first direct current port (10b) of the series-type multi-winding converter, and M is a positive integer greater than or equal to 2. The first isolation transformer (10c) comprises M first-type windings (10c1) and at least one second-type winding (10c2), and all the first-type windings (10c1) are isolated from each other. All the first-type windings (10c1) are isolated from the second-type windings (10c2), wherein each first-type winding (10c1) is connected to an alternating current port of each converter chain respectively, and the second-type windings (10c2) are connected in combination to form an alternating current port of the series-type multi-winding converter.

Classes IPC  ?

• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

Provided in the present application are a coordinated control method and system of a distributed compensator, and a computer device and a storage medium. The method comprises: assembling a distributed compensator; checking the operating state of each stage of module of each phase of converter; calculating the number of modules, which can effectively output voltages, of the distributed compensator; performing locking and bypassing when each module has a fault; and converting the state of a module, which needs to be subjected to conversion, into a hot standby state.

Classes IPC  ?

• H02J 3/26 - Dispositions pour l'élimination ou la réduction des asymétries dans les réseaux polyphasés

Abrégé

Provided are a multiport hybrid direct-current circuit breaker and a control method therefor. The multiport hybrid direct-current circuit breaker comprises at least two flow branches (101, …, 10k, …, and 10n), at least two commutator branches (201, …, 20k, …, and 20n), and a disconnecting branch (300). The flow branches (101, …, 10k, …, and 10n) comprise first fast mechanical switches (111, …, 11k, …, and 11n) and one-way commutator switches (121, …, 12k, …, and 12n) connected in series. The flow branches (101, …, 10k, …, and 10n) are connected with each other at one end and constitute a direct-current bus. The commutator branches (201, …, 20k, …, and 20n) comprise diode upper bridge arms (211, …, 21k, …, and 21n) and diode lower bridge arms (221, …, 22k, …, and 22n) connected in series in a same direction. The flow channels (101, …, 10k, …, and 10n) are each connected at the other end in a one-to-one correspondence to the midpoints of the commutator branches (201, …, 20k, …, and 20n) and correspondingly constitute one port. The disconnecting branch (300) comprises a one-way disconnecting switch (310) and a nonlinear resistor (320) connected in parallel. The disconnecting branch (300) and the commutator branches (201, …, 20k, …, and 20n) are connected to each other in parallel and constitute a first common bus and a second common bus.

Classes IPC  ?

• H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits

Abrégé

The present application provides a method and apparatus for handling a direct-current side line fault of a voltage source converter, the voltage source converter being provided at a rectification end or an inversion end of any one direct-current electrode in a direct-current power transmission system, the rectification end and the inversion end being connected by means of a direct-current line. The method for handling a fault comprises: acquiring a normal value of a direct-current voltage reference value of the voltage source converter; setting a direct-current current limit target value of the voltage source converter; on the basis of a direct-current current measurement value and the direct-current current limit target value, acquiring a direct-current current limit control output value; on the basis of the normal value of the direct-current voltage reference value and the direct-current current limit control output value, setting a direct-current voltage reference value of the voltage source converter; once a direct-current side line fault is detected, setting the direct-current current limit target value to be zero; and in response to the end of de-ionization, making the direct-current voltage reference value of the voltage source converter climb, and changing the direct-current current limit target value of the voltage source converter.

Classes IPC  ?

• H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

Disclosed is a failure analysis method based on a relay protection on-line monitoring and analysis system. When a power grid fails, the method can automatically filter and extract information transmitted by applications such as a protection device, a SCADA and a centralized waveform recorder, and perform time sequence and effectiveness analysis based on a primary-secondary device association relationship, a primary device topological connection, an alert event and the like, thereby achieving failure analysis. The present disclosure can quickly analyze failures, provide real-time relay protection device action information, record information and action failure reporting to power grid dispatching personnel, enables the power grid dispatching personnel to analyze power grid incidents in time, quickly and accurately locate power grid fault points and rapidly restore power supply, thereby improving the monitoring, failure analysis and state evaluation of the relay protection device, and empowering power grid failure analysis and aiding decision making.

Classes IPC  ?

• H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau
• H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits

Abrégé

The present application provides a control method for island operation of a VSC-HVDC system. The control method comprises: when a VSC-HVDC system is in an island operation, implementing a startup and steady-state operation of a converter in an open-loop control mode in the startup state; when an alternating-current system fault is detected, switching the converter from the open-loop control mode to a double-closed-loop control mode to limit the fault current suppression interference; and in a non-fault state, operating in an adaptive island control mode; or in a non-fault state, implementing the steady-state operation of the converter in the open-loop control mode. When the alternating-current system fails, the fault current suppression interference is limited by switching the fault current into the double closed-loop control mode; during the island operation, by automatically switching to current control without an inner loop, because there is no negative resistance caused by delays such as sampling control, the system is stable, the medium-frequency oscillation problem caused by introducing the negative resistance component due to closed-loop control is avoided, and a more preferred solution is provided for large-scale new energy access.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A modular batch energy acquisition and commutation circuit and a control method. The modular batch energy acquisition and commutation circuit comprises a batch energy acquisition unit and N sub-modules. The alternating current (AC) ends of the N sub-modules are in series connection, N is an integer greater than or equal to two, and each sub-module comprises: a power unit (1) comprising a power semiconductor device, the AC end of the power unit (1) being led out as the AC end of the sub-module; and a capacitor unit (2), which is in parallel connection with the power unit (1). The batch energy acquisition unit comprises: a first energy acquisition power supply (6), the cathode of the first energy acquisition power supply (6) being connected to the cathode of the capacitor unit (2) of the sub-module at the first end among the N sub-modules, or being connected by a current-limiting unit; and a connection network (30), the input end of the connection network (30) being directly connected to the anode of the first energy acquisition power supply (6) or being connected by the current limiting unit, and N output ends of the connection network (30) each being connected to the anodes of the capacitor units (2) or being connected by the current-limiting unit.

Classes IPC  ?

• G01R 31/14 - Circuits à cet effet
• G01R 31/52 - Test pour déceler la présence de courts-circuits, de fuites de courant ou de défauts à la terre

Abrégé

The present application provides an automatic closing bypass protection device of a series power module and a control method. The device comprises a first direct-current capacitor branch, a closing trigger unit, an opening trigger unit, and a power-loss protection unit; the closing trigger unit and the first direct-current capacitor branch are connected in parallel to a power supply unit; a bypass switch closing coil and a closing trigger element are connected in series and then are connected in parallel to a second direct-current capacitor. The bypass switch closing coil is closed to control closing of a bypass switch of a power module. The power-loss protection unit comprises a power-loss protection switch connected in parallel to two ends of the closing trigger element, and when it is detected that the output voltage of the power supply unit is reduced to a certain value, the power-loss protection switch is controlled to close, such that the bypass switch closing coil is powered on, and the bypass switch of the power module is closed.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique

Abrégé

Provided are a direct current circuit breaker and a control method therefor. The direct current circuit breaker comprises: at least two through-current switches, wherein each through-current switch has a first port, a second port and a third port; and a breaking switch, which has a fourth port and a fifth port, wherein the first port of the through-current switch and the fourth port of the breaking switch are respectively connected to a direct current bus of a direct current power grid system, the second port of the through-current switch is respectively connected to the fifth port of the breaking switch, and the third port of the through-current switch is respectively connected to a power transmission line of the direct current power grid system. By means of sharing an expensive breaking switch, the fault protection of a plurality of power transmission lines of a common direct current bus is realized, such that the manufacturing cost of a direct current circuit breaker is reduced, and the characteristic of easily breaking and reclosing at a rated current is also kept.

Classes IPC  ?

• H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p. ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits

Abrégé

Disclosed is a transformer substation misoperation-prevention logic visualization method capable of realizing real-time checking and simulation checking. The method comprises: configuring, in a text form, a misoperation-prevention locking logic rule, and generating a rule library shared by the whole station; storing data, which is required for misoperation-prevention locking logic rule checking, in a memory buffer area of a real-time database; displaying a primary wiring diagram of a transformer substation in a graphical browser; performing misoperation-prevention locking logic rule real-time checking on each device involved in the wiring diagram, and visually displaying the real-time checking process and a real-time checking result; and performing misoperation-prevention logic rule simulation checking on primary devices of the whole station, and visually displaying the simulation checking process and a simulation checking result. By means of the present invention, a misoperation-prevention locking logic rule is greatly simplified, and a logic relationship is visually displayed in a graphical manner, thereby improving the efficiency of a worker of a transformer substation when examining a locking logic.

Classes IPC  ?

• G06F 16/26 - Exploration de données visuellesNavigation dans des données structurées

Abrégé

A distributed optical fiber temperature measurement apparatus used for transformer temperature measurement, the apparatus comprising a hardware circuit (1), a laser device (2), a detector (3), a wavelength division multiplexer (4) and a temperature-sensing optical fiber orchestration network (5), wherein the hardware circuit (1) is respectively connected to the laser device (2) and the detector (3), the laser device (2) and the detector (3) are both connected to the wavelength division multiplexer (4), and the wavelength division multiplexer (4) is connected to the temperature-sensing optical fiber orchestration network (5); the hardware circuit (1) controls the laser device (2) to emit excitation light, the excitation light enters the temperature-sensing optical fiber orchestration network (5) after passing through the wavelength division multiplexer (4), and the excitation light generates, in the temperature-sensing optical fiber orchestration network (5), scattered light that carries temperature information; backscattered light returns to the wavelength division multiplexer (4) through an original path via the temperature-sensing optical fiber orchestration network (5), and two beams of signal light separated from the wavelength division multiplexer (4) are converted into electrical signals in the detector (3); and the hardware circuit (1) demodulates the temperature information after receiving the electrical signals. The problem of installation and disassembly being complicated when a sensing optical fiber is used for transformer temperature measurement can be solved. Further disclosed is a distributed optical fiber temperature measurement method used for transformer temperature measurement.

Classes IPC  ?

• G01K 11/32 - Mesure de la température basée sur les variations physiques ou chimiques, n'entrant pas dans les groupes , , ou utilisant des changements dans la transmittance, la diffusion ou la luminescence dans les fibres optiques

Abrégé

Provided are a method and apparatus for controlling a distributed series compensator, and a computer-readable medium. The distributed series compensator comprises N stages of unit modules, wherein each stage comprises three unit modules which are respectively and correspondingly connected to a three-phase alternating-current circuit; the N stages of unit modules are successively connected to the circuit in series, N being a natural number; and each of the unit modules comprises a firs-type bypass device, an energy acquisition unit, a converter unit and a control unit. The control method comprises: upon receiving a start command, inputting converter units of the N stages of unit modules step by step in a graded manner, and unlocking the converter units after a set first voltage threshold value is reached; and/or, upon receiving a stopping command, gradually reducing an alternating-current voltage output by the N stages of unit modules until same is zero, and then exiting the unit modules. By means of the method, disturbance generated to an alternating-current power grid when a distributed series compensator is started and stopped can be effectively reduced, thereby preventing direct-current overvoltage of unit modules, and realizing stable starting and stopping of the distributed series compensator.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

Disclosed in the present invention are a method and apparatus for automatically associating primary and secondary equipment models of a smart substation: for a cross-interval secondary equipment model, configuring a specific interval prefix for each interval LN (logic node) in the model to implement interval LN grouping, and establishing interval association LN to provide a primary and secondary interval association interface; configuring an SCD file to implement the instantiation of each secondary equipment model, importing an SSD file into the SCD file, directly associating a single-interval secondary equipment CID file with a related primary interval in the SSD, and assigning each interval DO of the interval association LN in a cross-interval secondary equipment CID file to complete interval association; specifying a secondary equipment LN association relationship for a primary equipment object type; and, on the basis of the association relationship between the primary equipment object type and the secondary equipment LN, associating the primary equipment in each interval with the related secondary equipment LN in each single-interval and cross-interval secondary equipment model. The present invention implements the automatic association of primary and secondary equipment models of a smart substation.

Classes IPC  ?

• H04L 12/24 - Dispositions pour la maintenance ou la gestion

Abrégé

Disclosed are a 5G-based method, module and terminal for realizing low scheduling latency and high speed access, and a secondary electrical device. The method comprises: receiving a real-time service message forwarded by a real-time service physical channel; performing TCP/IP packaging processing on the real-time service message to obtain a real-time service TCP/IP message; and sending the real-time service TCP/IP message to a 5G communication transceiving module at a fixed latency moment after a predetermined interruption, such that the 5G communication transceiving module sends the real-time service TCP/IP message to a 5G wireless network. By means of the present invention, a TCP/IP stack does not need to be deployed in a real-time service processor in a secondary electrical device, and the total latency of a real-time service message in the whole chain of 5G transmission can be reduced, thereby realizing quick synchronization of electrical quantities of differential protection, and improving the quick-action performance of relay protection.

Classes IPC  ?

• H04W 28/02 - Gestion du trafic, p. ex. régulation de flux ou d'encombrement

Abrégé

A wave head identification method and apparatus based on multi-scale wavelet transform. The method comprises the following steps: obtaining fault traveling wave current data, performing multi-scale wavelet transform on the traveling wave current data, and solving for a modulus maximum set under each scale (S101); by taking a first modulus maximum of a maximum scale as a reference point, performing longitudinal layer-by-layer search towards a small scale, and sequentially solving for a reference point of each scale within a wave head credibility interval (S102); calculating a lateral credibility indicator under each scale on the basis of the reference point of each scale (S103); and finding a minimum scale of a comprehensive credible reference point according to the lateral credibility indicator, locally correcting the reference point under the minimum scale, and taking the time corresponding to the locally corrected reference point as a wave head time (S104). The method can significantly improve the extraction precision of the wave head time when the traveling wave head changes gently.

Classes IPC  ?

• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales

Abrégé

Provided in the present application is an active modular converter chain control method, comprising: on the basis of the number of energy storage sub-modules and the number of non-energy storage sub-modules, calculating the maximum value of the active power outputted by a converter chain; on the basis of the maximum value of the active power, performing correction on a received active power command to acquire an active power correction command; on the basis of the active power correction command, performing correction on a received reactive power command to acquire a reactive power correction command; a control system distributes the active power correction command to the energy storage converter chain, and distributes the reactive power correction command to the non-energy storage converter chain and the energy storage converter chain; the energy storage converter chain executes closed-loop control on the basis of the distributed active power correction command and reactive power correction command; and the non-energy storage converter chain executes closed-loop control on the basis of the distributed reactive power correction command. Power commands are corrected on the basis of the output power capability of the converter chain in order to prevent the control target from exceeding the operating range, increasing reliability.

Classes IPC  ?

• H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02H 7/12 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour convertisseursCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour redresseurs pour convertisseurs ou redresseurs statiques

Abrégé

Provided are a flexible direct-current transmission line discharging method and apparatus, and a storage medium. The method comprises: unlocking a converter valve; using an additional controller to generate an additional control signal, and superimposing same onto an output reference voltage of a flexible direct-current transmission main controller, such that the converter valve generates a harmonic current between three-phase bridge arms; and when a direct-current line voltage is lower than a constant safe voltage value or when an average voltage of normally operating modules in the bridge arms is lower than the constant safe voltage value, locking a converter.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

An online parallel processing soft error real-time error detection and recovery method and system. The method comprising: dividing a protected RAM space into multiple protected areas; dividing all of the protected areas into one or more levels, the highest level being to complete an error detection and recovery function in each interrupt cycle, and the other levels being to complete an error detection and recovery function once in multiple interrupt cycles; registering the protected areas of each level to generate a linked list corresponding to the number of levels, and backing up at least two copies of each linked list and the protected areas in the linked list to other RAM space; and processing in parallel the error detection and recovery of each level of linked list and each protected area in the linked list. The described solution can, in a key scenario, achieve the verification, decision, correction, and recovery of high-importance level data in a control system within a single interruption beat, and at the same time, does not rely on a CPU processor itself, can process in real-time in parallel, and can achieve an online real-time error detection and correction function when multiple positions of the CPU processor and a RAM are abnormally shifted at the same time.

Classes IPC  ?

• G06F 11/10 - Détection ou correction d'erreur par introduction de redondance dans la représentation des données, p. ex. en utilisant des codes de contrôle en ajoutant des chiffres binaires ou des symboles particuliers aux données exprimées suivant un code, p. ex. contrôle de parité, exclusion des 9 ou des 11
• G11C 29/44 - Indication ou identification d'erreurs, p. ex. pour la réparation

Abrégé

Disclosed in the present application is a provincial and prefectural integrated source network load storage control system. The system comprises a provincial dispatching subsystem and a prefectural dispatching subsystem that is connected to the provincial dispatching subsystem, wherein the provincial dispatching subsystem comprises a provincial dispatching client and a provincial dispatching server, and the prefectural dispatching subsystem comprises a prefectural dispatching client and a prefectural dispatching server; the provincial dispatching server and the prefectural dispatching server are respectively and correspondingly connected to external load aggregators, so as to acquire provincial dispatching side access resources and prefectural dispatching side access resources; and the provincial dispatching server is connected to the prefectural dispatching server for information exchange between the provincial dispatching subsystem and the prefectural dispatching subsystem. Also provided in the present application is a control method based on the control system. According to the present application, access, monitoring and adjustment of ubiquitous load resources are realized, information barriers between a load aggregation platform and provincial and prefectural dispatching control systems are broken through, an interaction mode in which load resources participate in dispatching control is established, regulation and control of the ubiquitous load resources are realized, the adjustment capability and efficiency of a power grid are improved, and safe and reliable operation of the power grid and efficient consumption of clean energy are supported.

Classes IPC  ?

• G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projetsPlanification d’entreprise ou d’organisationModélisation d’entreprise ou d’organisation
• H04L 29/06 - Commande de la communication; Traitement de la communication caractérisés par un protocole

Abrégé

A forward compatibility method and circuit for a direct-current charging control circuit of an electric vehicle, and a converter. The method comprises: arranging equivalent resistors (Rd, R', Rc', Rc") on a CC1 loop and/or a CC2 loop; on the side of an electric vehicle, determining the type of a charger by means of monitoring the voltage on a CC2 line, and performing a charging flow according to the type of the charger; and on the side of the charger, by means of monitoring the voltage on a CC1 line, determining whether the charger is reliably connected to allow safe charging. An electric vehicle can be charged with all common chargers in the market, thereby realizing forward compatibility of a direct-current charging control guiding circuit.

Classes IPC  ?

• B60L 53/16 - Connecteurs, p. ex. fiches ou prises, spécialement adaptés pour recharger des véhicules électriques
• H01R 31/06 - Pièces intermédiaires pour joindre deux pièces de couplage, p. ex. adaptateur
• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs

Abrégé

Provided is a control and protection system for a distributed series compensator. The control and protection system comprises a remote scheduling control layer, an in-station centralized control and protection layer and an in-situ module control layer, which are hierarchically arranged and hierarchically perform controlling, wherein the in-situ module control layer comprises module control and protection layers and module valve base control layers. The remote scheduling control layer obtains a power instruction according to a real-time operation state of an alternating-current power grid; the in-station centralized control and protection layer receives the power instruction and converts same into a voltage instruction for each in-situ series compensation module; each module control and protection layer receives the voltage instruction, and outputs an in-situ series compensation module output voltage instruction; and each module valve base control layer converts the in-situ module output voltage instruction into a turn-on/off command for a power electronic device within the in-situ module control layer.

Classes IPC  ?

• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux
• H02J 3/06 - Commande du transfert de puissance entre réseaux connectésCommande du partage de charge entre réseaux connectés
• H02J 13/00 - Circuits pour pourvoir à l'indication à distance des conditions d'un réseau, p. ex. un enregistrement instantané des conditions d'ouverture ou de fermeture de chaque sectionneur du réseauCircuits pour pourvoir à la commande à distance des moyens de commutation dans un réseau de distribution d'énergie, p. ex. mise en ou hors circuit de consommateurs de courant par l'utilisation de signaux d'impulsion codés transmis par le réseau

Abrégé

The present application provides a charging control method for a hybrid converter, comprising: configuring a first bypass for full-bridge submodules in all bridge arms one by one until the number of first bypasses reaches a first set value or the average voltage of the full-bridge submodules is equal to the average voltage of half-bridge submodules; when the number of first bypasses reaches the first set value and the average voltage of the full-bridge submodules is not equal to the average voltage of the half-bridge submodules, configuring a second bypass for the half-bridge submodules in all the bridge arms one by one until the number of second bypasses reaches a second set value or the average voltage of the full-bridge submodules is equal to the average voltage of the half-bridge submodules; dynamically adjusting the number of first bypasses and the number of second bypasses according to the average voltage of the full-bridge submodules, the average voltage of the half-bridge submodules, and a rated charging voltage; and executing according to the dynamically adjusted number of first bypasses and the dynamically adjusted number of second bypasses until the average voltage of the full-bridge submodules and the average voltage of the half-bridge submodules both reach the rated voltage. In this way, all the submodules steadily reach the rated voltage.

Classes IPC  ?

• H02M 7/219 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont

Abrégé

The present invention provides a reinforcing structure and method for reinforcing valve towers, mainly aiming at valve towers with three or more layers, wherein the four corners of the side face of each layer of a valve section of the valve tower are provided with connecting flanges, and connecting rods are used for connecting the corresponding connecting flanges of adjacent valve towers of the same bridge arm to realize lateral reinforcing. The connection modes of lateral reinforcing mainly include horizontal connection, interleaving connection and cross-layer connection. The invention provides various reinforcing solutions for flexible DC valve towers in the environment of long-term turbulence and strong vibrations, the reinforcing structure is simple and effective, high in reliability and operability, and easy to disassemble, and the stability and safety of the valve towers during transportation and operation are enhanced.

Classes IPC  ?

• E04H 12/10 - Structures du type à fermes
• E04H 12/34 - Dispositions pour élever ou abaisser des tours, mâts, poteaux, corps de cheminée ou analogues
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

Provided are a control system with a crossed multi-ring-network redundant network topology structure. The control system comprises: a control object, which is provided with a plurality of groups of first connection nodes; and a plurality of controlled objects, wherein each controlled object is provided with one or more groups of second connection nodes, wherein any group of first connection nodes of the control object are successively connected to the second connection nodes of at least two controlled objects in the plurality of controlled objects, so as to form a ring network, and the plurality of groups of first connection nodes corresponding to the control object form a plurality of ring networks; and the plurality of ring networks include the plurality of controlled objects. According to the control system of the present application, the connection nodes of the control object can be connected to the plurality of controlled objects, so as to constitute ring networks, such that the number of connection nodes of the control object can be effectively reduced, and the power consumption of the control object is reduced. Moreover, since there are redundant connections between the control object and the controlled objects in the control system, the reliability of the whole control system is improved.

Classes IPC  ?

• H04L 12/42 - Réseaux en boucle

Abrégé

Provided is a control method for a direct-series module-type energy dissipation apparatus. A direct-series module-type energy dissipation apparatus is connected in parallel between direct-current lines, and comprises M direct-series modules and energy dissipation resistors which are connected in series, wherein each direct-series module comprises a first power semiconductor device and a voltage clamp unit; the voltage clamp unit comprises an energy storage unit and a discharge unit; the energy storage unit is connected in parallel to the first power semiconductor device; and the discharge unit comprises a second power semiconductor and an equalization resistor which are connected in series. The control method comprises: when the voltage of a direct-current line is normal, a control apparatus being in a standby mode, and turning on or turning off some second power semiconductor devices, or simultaneously turning on or turning off some of first power semiconductor devices and second power semiconductor devices, so as to adjust a capacitive voltage of a direct-series module; and when the voltage of the direct-current line reaches a starting threshold value, the control apparatus being in an energy dissipation mode, starting the apparatus, and controlling the turning-on and turning-off of energy dissipation resistors, so as to adjust the voltage of the direct-current line.

Classes IPC  ?

• H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu

Abrégé

A fault redundancy control method for a modular direct current (DC) energy consumption apparatus. The modular DC energy consumption apparatus is formed by connecting in series a plurality of sub-modules that are in series connection. The control method comprise: adding up the number of faulty sub-modules; according to the number of faulty sub-modules, determining the redundancy mode level, and entering a corresponding redundancy mode, at least one redundancy mode comprising skipping the current redundancy mode when the number of faulty sub-modules reaches the upper threshold of the current redundancy mode, and automatically entering a higher level redundancy mode.

Classes IPC  ?

• H02H 9/04 - Circuits de protection de sécurité pour limiter l'excès de courant ou de tension sans déconnexion sensibles à un excès de tension

Abrégé

The present application provides an experiment device for a power electronic module and a control method therefor. The device comprises four converter valve segments, a first reactor, a second reactor, a power supply, at least two charging switches, and at least two energy supplement switches. Each converter valve segment comprises at least one submodule connected in series. Negative ends of the four converter valve segments are directly connected to each other. A positive end of the first converter valve segment and a positive end of the second converter valve segment are respectively connected to both ends of the first reactor. A positive end of the third converter valve segment and a positive end of the fourth converter valve segment are respectively connected to both ends of the second reactor. The power supply supplies power to the four converter valve segments. One end of the two charging switches is connected to the power supply, and the other end of the two charging switches is respectively connected to one end of the first reactor and the second reactor. One end of the two energy supplement switches is connected to the power supply, and the other end of the two energy supplement switches is respectively connected to one end of one capacitor of a submodule of any two converter valve segments, so that the energy supplement switches are connected to the capacitor in parallel after being connected to the power supply in series.

Classes IPC  ?

• G01R 31/327 - Tests d'interrupteurs de circuit, d'interrupteurs ou de disjoncteurs

Abrégé

A method and system for detecting and recovering memory bit flipping in secondary power equipment, related to the technical field of memory error correction. The technical problem to be solved is equipment malfunctioning or result abnormality caused by memory bit flipping in secondary power equipment in the prior art. The method comprises the following steps: performing an ECC verification code calculation according to a preset ECC segment length with respect to an application running area when an application is loading, acquiring an ECC verification code for segment data of the application when the application is loading; performing an ECC verification code calculation according to the preset ECC segment length with respect to the segment data of the application when the application is running, acquiring an ECC check code for the segment data of the application when the application is running; comparing the ECC verification code with the ECC check code; and, if the segment data of the application when the application is running is determined, on the basis of the comparison result, to have experienced a single bit error, correcting the bit where the error occurred.

Classes IPC  ?

• G06F 11/10 - Détection ou correction d'erreur par introduction de redondance dans la représentation des données, p. ex. en utilisant des codes de contrôle en ajoutant des chiffres binaires ou des symboles particuliers aux données exprimées suivant un code, p. ex. contrôle de parité, exclusion des 9 ou des 11
• G06F 11/14 - Détection ou correction d'erreur dans les données par redondance dans les opérations, p. ex. en utilisant différentes séquences d'opérations aboutissant au même résultat

Abrégé

Provided in the present application are a control method and control apparatus for a direct current (DC) voltage regulation unit. The control method comprises: using a DC voltage regulation unit to regulate the DC power or DC current or DC voltage of the system in which the DC voltage regulation unit is located to be an instruction value; when a trigger angle or a turn-off angle of a line commutated converter of a current source valve set that is operating in the DC voltage regulation unit or an output voltage modulation ratio of a voltage source converter of a voltage source valve set is lower than a first set value, controlling a current source valve set or a voltage source valve set that is not operating to be put into operation; and when the trigger angle or the turn-off angle of the line commutated converter of the current source valve set that is operating in the DC voltage regulation unit or the output voltage modulation ratio of the voltage source converter of the voltage source valve set is higher than a second set value, controlling the current source valve set that is operating or the voltage source valve set to quit operating.

Classes IPC  ?

• H02J 3/36 - Dispositions pour le transfert de puissance électrique entre réseaux à courant alternatif par l'intermédiaire de haute tension à courant continu