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

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

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

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

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

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

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

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

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 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

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 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

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

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

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 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

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

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

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

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

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

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

Disclosed are a power transmission line distance protection current transformer saturation identification method and system. According to the present invention, a distance protection locking criterion and a distance protection opening criterion are constructed on the basis of an incomplete differential locking criterion, an incomplete differential opening criterion, a working voltage locking criterion, a working voltage opening criterion, and a current harmonic unlocking criterion, thereby ensuring that, in case of a reverse direction fault and current transformer saturation in a half-switch wiring or annular wiring mode, distance protection is still reliable and free of maloperation, and ensuring that, in case of a forward direction fault and various reverse direction to forward direction faults, distance protection can still operate reliably.

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 1/00 - Détails de circuits de protection de sécurité

Abrégé

A power transmission section thermal stability power limit interval identification method and system. The method comprises: solving an optimization model with the minimum power transmission section power as a target under a fault; solving a lower limit of a thermal stability power limit interval on the basis of all optimization results; constructing a sub-optimization model with the minimum difference in active power injected into a node as a target before/after the fault; constructing a main optimization model with the maximum ground-state power transmission section power as a target and considering Benders cut constraints; and iteratively solving the main optimization model and the sub-optimization model to determine an upper limit of the thermal stability power limit interval. The present invention converts a conventional thermal stability power limit calculation problem into a nonlinear optimization problem based on Benders decomposition, thereby enabling the identified limit interval to be more accurate, and having a guiding significance for dispatching personnel to fully grasp a safe and stable boundary of a power grid, ensuring safe and stable operation of the power grid, and making full use of the power transmission capacity of the power transmission section.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

Provided is a method for positioning a fault in a flexible DC distribution network, comprising the steps of arranging a DC bus protection area and a DC line protection area in the DC distribution network, wherein switches in the DC bus protection area and the DC line protection area are all provided with protection devices, and all of the protection devices are connected through a high-speed communication network; when the differential protection is normal, the differential protection is used for fault positioning, when the differential protection is withdrawn, a multi-point direction-based comprehensive fault positioning method is used for fault positioning; solving the problem of long delay in action of networked protection applied to the DC distribution network; solving the problem that the DC distribution network loses backup protection when the differential protection fails to work due to abnormallity thereof; and solving the problem that the overcurrent start-up sensitivity of the DC distribution network and the ease of setting and coordination cannot be possessed at the same time.

Classes IPC  ?

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

Abrégé

A line protection traveling wave distance measurement method and apparatus. The method comprises: performing fault detection according to collected power frequency data and traveling wave data, and determining whether to perform protection starting and traveling wave starting; in response to the protection starting and the traveling wave starting, carrying out protection distance measurement, and calculating a traveling wave head moment according to protection phase selection; performing traveling wave distance measurement according to a traveling wave head moment of a local end, traveling wave parameters and a traveling wave head moment of an opposite end of a collected line; and comparing all distance measurement results, and selecting the optimal result as the final distance measurement result. According to the method and apparatus, the protection starting and traveling wave starting are combined, that is, subsequent distance measurement is performed only when the protection starting and the traveling wave starting are both started, thereby effectively preventing the coverage of valid data caused by data storage triggered by frequent starting; moreover, traveling wave distance measurement is performed on the basis of the protection phase selection, thereby reducing the complexity of traveling wave distance measurement, and improving the stability.

Classes IPC  ?

• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
• 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 are an electric power spot market clearing calculation method based on multi-strategy fusion dimension reduction. The method comprises: firstly acquiring a power grid range and a calculation period for carrying out clearing calculation of an electric power spot market, and determining a calculation boundary; then, carrying out merging analysis of similar time periods, and reducing the number of time periods that join the clearing calculation; establishing and solving a relaxation security constrained unit commitment model, carrying out invalid start-stop variable identification and valid security constraint identification according to a calculation result, and reducing the number of start-stop variables and security constraints that join the clearing calculation; establishing a time period merged security constrained unit commitment dimension reduction clearing model, and quickly solving same in order to obtain a unit commitment result; and carrying out full-time-period economic dispatch and security check analysis on the basis of the unit commitment result, adding an out-of-limit time period and a monitoring section to the unit commitment dimension reduction clearing model, and finally obtaining an electric power spot market clearing result through iterative calculation.

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
• G06Q 50/06 - Fourniture d’énergie ou d’eau

Abrégé

A power transmission line distributed fault diagnosis system and method, the distributed fault diagnosis system comprising a monitoring terminal, a front-end server, and a central station server. The central station server comprises a communication micro service unit, a core micro service unit, and fault ranging micro service units; the front-end server receives data packets sent by the monitoring terminal, and stores same in a database; the communication micro service unit reads the data packets from the database and composes same into a file; the core might improve service unit receives interaction packets sent by the communication micro service unit and, on the basis of ID information in the interaction packets, finds a corresponding fault ranging micro service unit, and sends the file acquired by the communication micro service unit to the fault ranging micro service unit; and, on the basis of the received file, the fault ranging micro service unit implements fault diagnosis. The time for fault ranging terminals of different manufacturers to access the system is greatly reduced, increasing operating and maintenance efficiency.

Classes IPC  ?

• H04L 12/24 - Dispositions pour la maintenance ou la gestion
• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux

Abrégé

An online safety and stability emergency control method and system adapting to a device power flow change. Expected fault online strategies corresponding to power grid operation states at multiple moments are calculated; the online strategies are decomposed according to a controllable measure type, a fitting function of control quantity and power transmission channel active power is constructed, the control quantity of a controllable measure of an actual fault is solved according to the fitting function, and the online strategy of the actual fault is obtained. A mismatch risk in online emergency control is avoided.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

Disclosed are an adaptive and active disturbance rejection proportional integration-based direct current (DC) transmission system control method and system. The method comprises the following steps: performing discretization processing on an active disturbance rejection proportional integration controller, and obtaining an adaptive and active disturbance rejection proportional integration controller; and on the basis of the adaptive and active disturbance rejection proportional integration controller, achieving constant current control at an rectification side and constant turn-off angle control at an inversion side in a DC system. The present invention applies the adaptive and active disturbance rejection proportional integration controller in constant current control at an rectification side and constant turn-off angle control at an inversion side in a DC system, improves the dynamic response speed and robustness of the system when responding to large-scale disturbance, and effectively suppresses continuous commutation failure in a high-voltage DC transmission 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

Abrégé

Disclosed is a method for restraining a tail current and preventing malfunction protection maloperation. A fault current is processed by means of a differential filtering algorithm to acquire first current data; the fault current is processed by means of a full-cycle Fourier algorithm to acquire second current data; the first current data is processed by means of half-wave integration to acquire third current data; and whether the third current data and the second current data both satisfy a malfunction action threshold is determined, and if the two both satisfy the malfunction action threshold, a malfunction protection action is started. The present invention is suitable for a scenario in which a relay protection secondary current transformer has a "tail current" after a short-circuit fault occurs in a power system, the effect of the tail current can be effectively reduced, and malfunction protection maloperation can be prevented.

Classes IPC  ?

• H02H 7/22 - 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 appareillage de distribution, p. ex. système de barre omnibusCircuits 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 dispositifs de commutation
• G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée

Abrégé

A month-long schedule safety and stability checking method and system. Said method comprises: on the basis of historically-recorded actual measured power sequences of new energy stations, performing cluster analysis and probabilistic statistical calculations, obtaining a real power output adjustment plan for each new energy station, and combining schedules to be checked to integrally generate a set of types of schedules to be checked; on the basis of the set of types of schedules to be checked, performing a safety and stability quantitative assessment with respect to all anticipated faults, obtaining a safety and stability check result. The present method calculates the effects of uncertainties of new energy installations on month-long schedule checks, allowing the safety and stability check result to be more comparable to the actual power grid, enabling effective guidance over actual power grid dispatch operations.

Classes IPC  ?

• G06Q 50/06 - Fourniture d’énergie ou d’eau

Abrégé

Disclosed are base event generation and update methods for power grid monitoring. The generation method comprises: acquiring power grid monitoring information, identifying, according to a pre-defined signal event rule library, signal events corresponding to the power grid monitoring information; merging, according to an apparatus associated with the power grid monitoring information, the signal events for the same apparatus within the same time interval, and generating a base event. The base event generation method provided in the present invention performs event identification on standalone power grid warning signals, and performs merging according to the apparatus, thereby significantly reducing the number of monitoring warnings, particularly preventing the situation of frequent signal triggers, and effectively improving monitoring efficiency of monitoring operations. The base event update method provided by the present invention enables, by means of an update mechanism for base events, adjustment and control personnel to learn a change in an apparatus state, thereby aiding trend analysis of the apparatus state.

Classes IPC  ?

• G06Q 10/00 - AdministrationGestion
• G06Q 50/06 - Fourniture d’énergie ou d’eau
• G06F 16/245 - Traitement des requêtes

Abrégé

Disclosed is an operation scheduling method for multiple energy systems, comprising: separately constructing a power system operation scheduling model, a natural gas system operation scheduling model, and a thermodynamic system operation scheduling model in the multiple energy systems; separately solving the optimality conditions of a power system scheduling model, a natural gas system scheduling model, and a thermodynamic system scheduling model; constructing an operation scheduling objective optimization function of the multiple energy systems, and using the solved optimality conditions as constraints; solving the objective optimization function, and obtaining the Nash equilibrium point of a non-cooperative game of the multiple energy systems; and separately performing operation scheduling on a power system, a natural gas system, and a thermodynamic system in the multiple energy systems according to a scheduling policy corresponding to the Nash equilibrium point. The present invention can realize optimal operation scheduling.

Classes IPC  ?

• G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"

Abrégé

An incremental dynamic stacking-based future power grid model construction method, comprising: parsing and storing power grid model future change information of all power grid projects; and selecting a future moment according to requirements, and performing sequential dynamic superposition calculation on power grid model future change information at and before the future moment and a current power grid model, so as to obtain a future power grid model at the future moment. In the method, the future power grid model is obtained by means of a sequential dynamic superposition algorithm according to actual requirements, the future power grid model is not fixedly stored, and it is unnecessary to periodically update and synchronize mirror model data according to an on-line system model; the change of an operation system model is embodied in the future power grid model in real time, and the change of a recent future power grid model is embodied in a long-term future power grid model in real time, which is suitable for planning and using a future power grid in multiple periods.

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
• G06Q 50/06 - Fourniture d’énergie ou d’eau

Abrégé

Disclosed is a distributed fault detection method for a power distribution system having resonant grounding, which belongs to the technical field of electric power automation. The invention comprises: detecting a fault according to a shift in neutral-to-earth voltage; using pre-fault and post-fault voltages (relatively) to identify a fault phase; and identifying a faulty feeder (and a fault region of a long feeder) according to the relationship between an initial transient of a zero-sequence current and a fault phase voltage after the occurrence of the fault. The invention uses voltage signals and current signals from corresponding voltage transformers and current transformers, such that protection devices in the same or different feeders do not need to communicate with each other to identify a faulty feeder.

Classes IPC  ?

• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
• G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée

Abrégé

Provided is an accurate load shedding system and method based on a power-dedicated wireless network. The system includes: a control master station layer, a control substation layer and a terminal user access layer. The control master station layer includes a control master station apparatus and an optical/E1 conversion device. The control substation layer includes an optical/E1 conversion device, a control substation apparatus and a wireless access device. The terminal user access layer includes a wireless core network, a base station and a control terminal. The wireless access device is connected to the wireless core network through Ethernet. The wireless core network is connected with the base station through an optical fiber. The control terminal is connected to a wireless network of the base station through customer premise equipment (CPE).

Classes IPC  ?

• H04W 28/08 - Équilibrage ou répartition des charges
• H04W 28/12 - Régulation de flux utilisant une signalisation entre les éléments

Abrégé

Disclosed are a precise load shedding system and a communication method thereof, and an access device. The access device comprises: two E1 interfaces, eight optical fiber interfaces, a central processing unit (CPU), and a field-programmable gate array (FGPA). The two E1 interfaces are respectively connected to a first control device and a second control device of a control substation. The eight optical fiber interfaces are respectively connected to eight control terminals. The FGPA comprises eight optical fiber transceiver modules and two E1 transceiver modules. The eight optical fiber transceiver modules are respectively connected to the eight optical fiber interfaces by means of a serial interface. The two E1 transceiver modules are respectively connected to the two E1 interfaces by means of a serial interface. Each optical fiber transceiver module is provided with reset submodules therein. Each E1 transceiver module is provided with reset submodules therein. The CPU is connected to the FPGA by means of a parallel bus.

Classes IPC  ?

• H04L 12/911 - Contrôle d’admission au réseau et allocation de ressources, p.ex. allocation de bande passante ou renégociation en cours de communication
• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• 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

Disclosed are a load shedding system and method. The load shedding system comprises a control master station layer, a control sub-station layer and a terminal user access layer, wherein the control master station layer comprises a control master station apparatus and an optical fiber/E1 conversion device; the control sub-station layer comprises an optical fiber/E1 conversion device, a control sub-station apparatus and a wireless access device; the terminal user access layer comprises a wireless core network device, a base station and a control terminal; the wireless access device is connected to the wireless core network device via Ethernet; the wireless core network device is connected to the base station via an optical fiber; and the control terminal is connected to a wireless network of the base station via customer premise equipment (CPE).

Classes IPC  ?

• H04B 10/2575 - Radio sur fibre, p. ex. signal radio modulé en fréquence sur une porteuse optique
• H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
• H04L 1/00 - Dispositions pour détecter ou empêcher les erreurs dans l'information reçue
• H04Q 11/00 - Dispositifs de sélection pour systèmes multiplex

Abrégé

Provided is an emergency accurate control method and system for large-scale interruptible loads. The method includes: acquiring, by a region control master station, a sheddable load sequence table; acquiring, by the region control master station, a first to-be-shed load; performing, by the region control master station, minimum under-shedding matching layer by layer according to the first to-be-shed load, and shedding a sheddable load corresponding to control substation matching with the first to-be-shed load; and sending, by the region control master station, a second to-be-shed load to the corresponding control substation for load shedding if the second to-be-shed load exists.

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
• G05B 19/042 - Commande à programme autre que la commande numérique, c.-à-d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques
• 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

Provided are an accurate load shedding system, and a communication method and an access apparatus thereof. The access apparatus includes: two E1 interfaces, eight optical fiber interfaces, a CPU and an FPGA. The two E1 interfaces are respectively connected to a control apparatus A and a control apparatus B of a control substation. The eight optical fiber interfaces are respectively connected to eight control terminals. The FPGA includes eight optical fiber transceivers respectively connected to the eight optical fiber interfaces through serial interfaces, and two E1 transceivers respectively connected to the two E1 interfaces through serial interfaces. Each optical fiber transceiver includes a reset submodule. Each E1 transceiver also includes a reset submodule. The CPU is connected to the FPGA through a parallel bus.

Classes IPC  ?

• H04L 12/10 - Dispositions pour l'alimentation

Abrégé

Disclosed are a large-scale interruptible-load emergency precision control method and a system. The method comprises: a regional control station acquiring a sequence listing of sheddable loads; the regional control station acquiring a first load which must be shed; the regional control station performing minimum cut matching by level according to the first load which must be shed, cutting out a sheddable load corresponding to a control substation having a successful cut match; if there is a second load which must be shed, the regional control station sending the second load which must be shed to the corresponding control substation to perform load cutting processing.

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

Abrégé

st[p]sr[q]mt[q]mr[p]ppp (S1040).

Classes IPC  ?

• H04J 3/06 - Dispositions de synchronisation

Abrégé

Disclosed is a titration end point indicating device for a permanganate index on-line analyzer of a double platinum electrode type. The device comprises double platinum electrodes (1), an excitation current reversing module (2), a constant flow source module (3), a signal acquisition module (4), and a microprocessor module (5), wherein the double platinum electrodes (1) are placed in a reaction solution (6), the constant flow source module (3) is connected to two platinum sheets (1-1,1-2) of the double platinum electrodes (1) through the excitation current reversing module (2), the excitation current reversing module (2) is connected to the signal acquisition module (4), and the signal acquisition module (4) is connected to the microprocessor module (5).

Classes IPC  ?

• G01N 27/42 - Mesure du dépôt ou de la libération de matériaux d'un électrolyteCoulométrie, c.-à-d. mesure de l'équivalent de Coulomb du matériau dans un électrolyte

Abrégé

Disclosed in the present invention is an interval power flow calculation method for a power-heat integrated energy system, comprising: (1) obtaining power-heat integrated energy system information, and establishing a power-heat integrated energy system model according to the information; (2) converting a pipe pressure drop equation in the system model into a one-variable quadratic function of a flow rate m; (3) obtaining the iterative initial value of a state variable by calculation according to the power-heat integrated energy system model; (4) iteratively solving the upper and lower limits of the state variable by using a linear optimization method according to the iterative initial value of the state variable and the one-variable quadratic function of the flow rate m; and (5) forming the upper and lower limits of the state variable into an interval, and outputting the interval as a power flow solution. The present invention has small calculation complexity and overcomes the conservatism of the interval solution.

Classes IPC  ?

• H02J 3/06 - Commande du transfert de puissance entre réseaux connectésCommande du partage de charge entre réseaux connectés
• 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 invention is a multi-period power flow optimization method for an electricity-gas interconnection integrated energy system, said method comprising: (1) acquiring electricity-gas interconnection integrated energy system information; (2) according to said system information, constructing a multi-period scheduling model of an electricity-gas interconnection integrated energy system; (3) converting a non-linear non-convex equation of the natural gas pipe flow and pressure in the multi-period scheduling model of the electricity-gas interconnection integrated energy system into a natural gas power flow model in the form of enhanced second-order cone constraints; (4) calculating the converted multi-period scheduling model of the electricity-gas interconnection integrated energy system, so as to obtain an optimal solution; (5) using the optimal solution as an initial value, and using a DCP method to perform linearization iteration calculation on the converted multi-period scheduling model of the electricity-gas interconnection integrated energy system, until a natural gas system strictly satisfies power flow constraints; and (6) outputting a final solution at the end of the iteration as an optimal power flow solution in a future period. The present invention can effectively perform multi-period power flow optimization.

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
• G06Q 50/06 - Fourniture d’énergie ou d’eau
• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

A weight and constraint associated adjustment-based real-time power generation control optimization decision method for a power grid. By resolving a power generation control optimization decision model which takes, as the weight, a comprehensive index reflecting the influence chracteristics of an output of a power plant on the security and stability of the power grid, economic and environmental protection performance, prediction performance, adjustment performance and spot transaction execution conditions of the power plant, the power transmission devices/sections are classfied into constrained and unconstrained categories according to whether power transmission devices/sections reach the norm. For a power plant having a smaller active power sensitivity to the constrained devices/sections, a power generation control optimization decision is made by using the comprehensive index irrespective of the power grid security performance of the power plant as a weight and only considering overload constraints of the unconstrained devices/sectios, thereby realizing adaptive adjustment of associating the weight with constraints, ensuring that the power generation control of the power grid satisfies the requirements of real-time performance, security and economy and environmental protection.

Classes IPC  ?

• 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

Provided are a synchronization method, a wide area system protection apparatus, a plant station and a computer readable storage medium. The method includes: sending to a second plant station a first data frame that includes a sequence number p and a sending timestamp of the first data frame; receiving a second data frame sent by the second plant station, and recording a receiving timestamp of the second data frame, the second data frame including a sequence number q of the second data frame, a sending timestamp of the second data frame and a receiving timestamp of the first data frame, and the first data frame being adjacent to the second frame on the second plant station; calculating a time phase difference and a crystal oscillator frequency deviation between the first plant station and the second plant station; and adjusting time and a clock frequency of the first plant station.

Classes IPC  ?

• H04L 7/00 - Dispositions pour synchroniser le récepteur avec l'émetteur
• H04W 56/00 - Dispositions de synchronisation
• H03L 7/06 - Commande automatique de fréquence ou de phaseSynchronisation utilisant un signal de référence qui est appliqué à une boucle verrouillée en fréquence ou en phase
• G01S 19/37 - Détails de matériel ou de logiciel de la chaîne de traitement des signaux

Abrégé

A method for determining a power flow of a DG-connected distribution network and a computer storage medium. The method comprises: establishing, on the basis of parameters of N nodes in a DG-connected system, a nonlinear power flow equation for the system, and converting the nonlinear power flow equation to a linear-nonlinear hybrid equation for the system (11), wherein N is a positive integer; and determining, on the basis of the definition of a bilinear state variable and a solution of the linear-nonlinear hybrid equation for the system, phase differences between and voltages of the N nodes and phase differences between N-1 nodes (12).

Classes IPC  ?

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

Abrégé

A hierarchical management system and method for centralized operation and maintenance of transformer substations, performing centralized operation and maintenance as well as hierarchical management on the transformer substations by collecting and reporting information in the transformer substations in combination with operation and maintenance information collected by a main station. The method can solve the contradiction between the increasing number of the transformer substations and the shortage of operation and maintenance personnel, and reduce the workload of the operation and maintenance personnel; the method breaks through the conventional operation and management mode for the transformer substations, and is based on an actual situation of operation and maintenance of the transformer substations to improve the management level for operation and maintenance of the transformer substations, thereby making the operation and maintenance management for the transformer substations more scientific, standardized, and reasonable.

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

Abrégé

The present invention relates to the technical field of power automation, and relates to an arc light fault identifying method based on panoramic information, thereby realizing arc light identification of a circuit breaker. By analyzing the characteristic change of current in a time domain and a frequency domain when an electric arc fault occurs, extracting an appropriate characteristic value as the input of an error back propagation (BP) neural network, detecting the electric arc fault by using the BP neural network, for the defect of slow convergence of the BP neural network, obtaining an initial weight value of the BP neural network by using a genetic algorithm, and accelerating the training convergence speed of the neural network, the output signal-noise ratio of the method is high, and thus, the accuracy and reliability of fault electric arc detection are improved.

Classes IPC  ?

• G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
• G06K 9/62 - Méthodes ou dispositions pour la reconnaissance utilisant des moyens électroniques

Abrégé

A preventive control optimization decision method based on online verification of an offline policy for a safety control system. The method comprises: identifying, according to a real-time status and an offline policy model parameter of a safety control system, a response policy for each fault scenario to be protected against; performing, according to a real-time status of a power grid, safety verification of the response policy for each fault scenario, and regarding a fault scenario having an insufficient transient, dynamic, or static safety stability margin as a risky fault scenario; choosing, with respect to the real-time status of the power grid, an objective function that minimizes a sum of a preventive control cost and an emergency control cost accounting for the probability of a fault; calculating a preventive control optimization decision meeting safety stability requirements of the power grid under all risky fault scenarios, and performing, with regards to the preventive control optimization decision, safety verification of other fault scenarios to be protected against by the safety control system; and performing iterative computation until requirements of safe and stable operations of the power grid after a fault are met under the preventive control optimization decision for all fault scenarios to be protected against by the safety control system, thereby eliminating safety risks of the power grid caused by insufficient control variables or a mismatch of an offline policy.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

A power grid dispatching-based operation and maintenance method comprises the following steps: at least collecting monitored data associated with hardware equipment and system software of a power grid dispatching and control system; determining, at least according to a data type and/or time validity of the collected monitored data, a storage method for the collected monitored data, and using the determined storage method to store the collected monitored data; performing detection on the monitored data to obtain anomaly index data; constructing, on the basis of a multidimensional association analysis of the anomaly index data, a fault diagnosis tree with respect to operation and maintenance, and diagnosing and locating a fault on the basis of which the anomaly index data is generated; and presenting the fault as a multi-dimensional visualization.

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
• G06Q 50/06 - Fourniture d’énergie ou d’eau
• G06F 11/30 - Surveillance du fonctionnement

Abrégé

Disclosed are a method and apparatus for credibility assessment of network packet delay measurement, and a storage medium. The method provides the measurement based on two indexes of a packet, i.e., a reasonable value of total link delay and a relative error value of total link delay, and a computing method, and provides an engineering usage and threshold determination method for determining a confidence interval of a network packet delay measurement value using a statistical method, thereby providing a credible basis for the credibility assessment of a network packet delay measurement result, ensuring the effective and reliable use of an essential power service packet (a network SV packet or the like) of a smart transformer station, and improving the running reliability of a secondary power device.

Classes IPC  ?

• H04J 3/06 - Dispositions de synchronisation

Abrégé

Disclosed in embodiments of the present application is a master/slave station monitoring information check method. The method comprises: a teleindication information automatic check module automatically checks teleindication information and sends same to a slave station by means of a wide-area service bus for a teleindication setting and push module of the slave station to process; a telemetry information automatic check module automatically checks telemetry information and sends same to the slave station by means of the wide-area service bus for a telemetry setting and push module of the slave station to process; a telecontrol information automatic check module automatically checks telecontrol information and sends same to the slave station by means of the wide-area service bus for a telecontrol operation processing module of the slave station to process. Also disclosed are a master station and a slave station.

Classes IPC  ?

• H04L 12/40 - Réseaux à ligne bus

Abrégé

Disclosed is an energy transition decision support method based on technology-economy-real participant-computer agent interactive simulation, which falls within the technical field of energy planning. According to the present invention, the method comprises: adding a transition decision of a real participant to a quantitative energy system technology-economy model; and in each stimulation step, taking decision-making behavior of the real participant and a computer agent as the input quantity of an objective technology-economy model, and adjusting a decision of the next stage based on a simulation result under the drive of a behavior decision of a previous stage, so as to reflect the interaction influence of technology-economy-multiple-side game behavior in the time track of the simulation result. According to the present invention, the adverse effect caused by the deviation of a computer agent in simulating behavior of an important role can be reduced, thereby giving consideration to the advantages of a real participant and the computer agent in simulating the behavior of a human.

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
• G06Q 50/26 - Services gouvernementaux ou services publics
• G06F 17/50 - Conception assistée par ordinateur

Abrégé

Provided is an electric vehicle charging control method, comprising: measuring the frequency of the local electrical grid (101); adjusting a power output value according to said local electrical grid frequency (102).

Classes IPC  ?

• B60L 50/50 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible

Abrégé

A fault diagnosis method for a main distributing valve of a hydraulic turbine governor, a fault diagnosis device and a computer storage medium, said fault diagnosis method comprising: acquiring a proportional servo valve feedback signal, a main distributing valve position feedback signal and a servomotor travel feedback signal; and determining, according to the proportional servo valve feedback signal, the main distributing valve position feedback signal and the servomotor travel feedback signal, whether the main distributing valve of the hydraulic turbine governor fails and/or the type of the failure. Said method achieves accurate and timely determination, has a comprehensive basis for determination, and can accurately determine location of a failure and give a corresponding maintenance decision.

Classes IPC  ?

• G01M 13/00 - Test des pièces de machines
• G05B 23/02 - Test ou contrôle électrique

Abrégé

Disclosed is a power distribution network fault repair system data sharing method for an information exchange bus based on IEC 61968 standards. The method is such that, with data collected by subsystems serving as data models, a metamodel generating component abstractly generates a metamodel from the data models according to a four-layer metadata structure per the MOF standard. The metamodel comprising data model information and metamodel description information is transmitted to an IEC 61968-based power distribution network information exchange bus. A mobile operation terminal identifies via the metamodel description information and extracts from the power distribution network information exchange bus a required file, and a metamodel converting component converts a model definition into a program-understandable XML text according to the PMDL standard. The present invention implements rapid fault repair commanding service interoperation between different service systems, abstracts two information exchanging systems into two information objects, and views exchanged information as one file, thus facilitating system integration and information exchange.

Classes IPC  ?

• G06Q 50/06 - Fourniture d’énergie ou d’eau
• H04L 12/933 - Cœur de commutateur, p.ex. barres croisées, mémoire partagée ou support partagé
• G06F 17/30 - Recherche documentaire; Structures de bases de données à cet effet

Abrégé

A distribution protection collaborative architecture including a flexible interconnection device, a device, and a collaboration method. Under a frame of collaborative control, the rapid state sensing of a power electronic device of the alternating current (AC) and direct current (DC) flexible interconnection device and the AC side feeder protection control device are used to achieve rapid fault locating and fault removal, enabling rapid self-recovery of a region fault of a full AC and DC system. The present invention is proposed to achieve, by means of a GOOSE communication network based on region high-speed information interaction, global information high-speed communication of smart devices, including the flexible DC interconnection device, in the same AC and DC system, and automatically realize rapid fault locating and isolation of a protection device according to a pre-set condition. With respect to a protection configuration manner of a traditional power distribution system, the present invention has a higher fault handling speed and a better collaborative fault handling capability.

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

A risk assessment method for an operation state of a charging station. The method comprises: defining several first-level risk assessment indexes for a charging station, each of the first-level risk assessment indexes containing several second-level risk assessment indexes; using a fuzzy analytical hierarchy process to perform single-hierarchy fuzzy analysis on the first-level risk assessment indexes; using the fuzzy analytical hierarchy process to perform multi-hierarchy fuzzy comprehensive assessment on the second-level risk assessment indexes; and calculating a risk assessment value according to a result of the multi-hierarchy fuzzy comprehensive assessment. In the assessment method, fuzziness and hierarchy between various factors of risk assessment on charging and battery swap stations are taken into account, and the performance of each factor in the assessment is specified via an expert experience marking table, so that the risk assessment is more objective, and the safe operation of charging and battery swap stations for electric vehicles is achieved, thereby reducing danger and loss to the minimum.

Classes IPC  ?

• G06F 19/00 - Équipement ou méthodes de traitement de données ou de calcul numérique, spécialement adaptés à des applications spécifiques (spécialement adaptés à des fonctions spécifiques G06F 17/00;systèmes ou méthodes de traitement de données spécialement adaptés à des fins administratives, commerciales, financières, de gestion, de surveillance ou de prévision G06Q;informatique médicale G16H)
• G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projetsPlanification d’entreprise ou d’organisationModélisation d’entreprise ou d’organisation

Abrégé

An adaptive equipment overload emergency control method based on automatic measure sensitivity identification. According to the method, for equipment overload emergency control causing no power grid splitting, e.g., single disconnection or same-station parallel equipment total disconnections: when equipment overload is determined for the first time, calculating, according to a measure sensitivity initial value, equipment overload emergency control measure combinations to control the power grid; reckoning, according to the control effect, integrated measure sensitivity, and utilizing the integrated measure sensitivity to update the sensitivity of other measures of a station to which a recently applied measure is accessed; calculating the equipment overload emergency control measure combinations; and iterating "sensitivity reckoning-control measure calculation" until the equipment overload is eliminated. The method can comprehensively guarantee control precision, timeliness and reliability.

Classes IPC  ?

• 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 3/14 - 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

An interconnected information security protection system for electric vehicles comprises a network protection module and a file system protection module. The network protection module is used for filtering network packets, regulating and controlling network connection actions, and recording detailed information of network actions. The file system protection module comprises a file monitoring module, a storage device control module, and a virtual disk control module. The file monitoring module is used for monitoring file operations, recording operation information of a file, and controlling file reading and writing according to file access rights. The storage device control module is used for controlling access to storage devices. The virtual disk control module is used for creating virtual disks, loading/unloading virtual disks, and controlling access to virtual disks. The information security protection system allows effectively monitoring and protection of electric vehicle information platforms, better ensuring confidentiality and integrity of computer data and providing a more reliable protection service for personal information.

Classes IPC  ?

• G06F 21/62 - Protection de l’accès à des données via une plate-forme, p. ex. par clés ou règles de contrôle de l’accès

Abrégé

Provided is a CPU + multi-GPU heterogeneous-mode static security analysis computation method, used for addressing the requirements of rapid-scanning static security analysis of large power grids in practical engineering applications; on a compute unified device architecture (CUDA) platform, according to system GPU configuration and computing requirements, using OpenMp multithreading technology to allocate a corresponding number of threads, each thread corresponding uniquely to a single GPU; on the basis of CPU and GPU hybrid programming development, a CPU + multi-GPU heterogeneous computing mode are collaborated and coordinated to complete predictive failure parallel computing; on the basis of single predictive failure trend computation, a plurality of breaking trend iteration processes are highly synchronized and parallel; by means of parallel significant improvement of static security analysis predictive-failure scanning parallel processing capacity by element-level fine granularity, powerful technical support is provided for interconnected large-power-grid integrated scheduling system online security-analysis warning scanning. Also disclosed are a CPU + multi-GPU heterogeneous-mode static security analysis computation apparatus and computer storage medium.

Classes IPC  ?

• G06F 9/50 - Allocation de ressources, p. ex. de l'unité centrale de traitement [UCT]

Abrégé

A power grid model on-line calibration method, a device, and a storage medium. The method comprises the following steps: establishing power grid model calibration rules and configuring a calibration operational process (101); constructing a calibration object of a power grid model (102); calibrating the calibration object on the basis of the power grid model calibration rules and the calibration operational process (103); and at least storing a calibration event of three dimensions comprising: personnel operational information, calibration information and time, and the calibration object (104).

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

A displacement reason recognition method and apparatus for a switchgear in a power grid, and a storage medium. The method comprises: acquiring a device status of a switchgear in a power grid, an operation record of the switchgear and a displacement record of the switchgear, and according to the device state of the switchgear, the operation record of the switchgear, the displacement record of the switchgear and a time sequence relationship between records, performing correlation analysis to acquire an analysis result; and based on the analysis result and a pre-set displacement strategy, recognizing a displacement reason of the switchgear.

Classes IPC  ?

• G05B 19/04 - Commande à programme autre que la commande numérique, c.-à-d. dans des automatismes à séquence ou dans des automates à logique

Abrégé

A value network-based method for energy storage system scheduling optimization. The method uses a strategy of an energy storage system automatically adjusting an output plan thereof in the context of time variance of an energy value so as to achieve the maximum energy value: first performing rasterization on a 2D bounded state space enclosed by a time and an energy storage state; constructing a value network according to a time reverse sequence, wherein each unit in the network corresponds to a point of a state space; the value thereof calculating the maximum value from a state point to an ending state point of a scheduling cycle, an output plan corresponding to the maximum value chain recorded by a starting state point of the scheduling cycle being an optimal solution under rasterization accuracy; creating a state space with a finer granularity close to a low-accuracy solution of an output plan in a previous step, and repeating said process to drive solution convergence by means of repeated iteration until accuracy meets a requirement. The method has high solution accuracy, fast convergence, and good robustness, and may better ensure the economic efficiency and reliability of energy storage system regulation and control.

Classes IPC  ?

• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie
• G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"
• G06Q 50/06 - Fourniture d’énergie ou d’eau

Abrégé

Disclosed in the present invention is a message delay measurement and correction method based on a bidirectional HSR ring network. The method comprises the following steps: a source node simultaneously sending the same Ethernet message to destination receiving nodes in two directions of a bidirectional HSR ring network; calculating the residence time of the message at each of the nodes by recording time marks of the Ethernet message entering and exiting from the node; calculating a path delay between the nodes; adding up the calculated residence time of the Ethernet message at the node and the calculated path delay between the nodes into a delay correction domain of the Ethernet message to obtain a final delay correction domain field, thereby realizing correction of a transmission delay of the Ethernet message; and the destination receiving nodes selecting a message that is the first to arrive at the directions, and taking the final delay correction domain field in the message as a final delay of the message. The present invention ensures recovery of zero delay in the case of a network failure, no frame loss in the case of a failure, and high network reliability, and can correct a delay correction domain field in a message.

Classes IPC  ?

• H04L 12/26 - Dispositions de surveillance; Dispositions de test

Abrégé

Disclosed are a combined decision method for power generation plans of multiple power sources, and a storage medium. The multiple power sources comprise a power generation system composed of thermal power, wind power and pumped storage. The combined decision method is: according to power grid requirement information, combined with a power balance analysis result, preferably choosing a starting and stopping state of a thermal power set; establishing an optimization model in which the multiple power sources are coordinated, and carrying out joint optimization for active power outputting of a wind power-thermal power-pumped storage set; and implementing a security check on an active power outputting plan of the multiple power sources, iteratively correcting a starting and stopping plan of the thermal power set, and finally, generating a combined power generation plan of the multiple power sources. The present solution brings wind power prediction data into power balance and arranges the starting and stopping of a thermal power set in advance, so that the effect of peak clipping and valley filling of a pumped storage set can be achieved, and a joint decision of power generation plans of multiple power sources, such as thermal power, wind power and pumped storage, can be realized so as to replace or reduce the power generation capacity of a thermal power set, and thus the consumption and absorption level for clean energy of a power grid can be improved.

Classes IPC  ?

• G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"

Abrégé

A peer-to-peer mutual backup method suitable for multi-region integrated control of a power grid, comprising: regional mutual backup control systems are at a completely equal position; a power grid model is maintained in a distributed manner on the basis of regions and is shared on the basis of demands; operation information is bi-directionally synchronized; real-time data is collected independently; in the case that data of two sides is consistent, a regional master-backup system achieves one-key online handover of a downlink control right as well as integrated calculation and analysis. The present invention can improve the expandability and the availability of a backup control system of a power grid.

Classes IPC  ?

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

Abrégé

A safe correction calculation method based on partition load control is provided. To resolve the issue in which, in a UHV AC/DC hybrid power grid, if a DC blocking causes large-scale power loss fault, an apparatus cannot perform an adjustment to restore power grid correction control, the method fully utilizes adjustable load capacity to achieve safe correction control to meet a requirement for safe operation of a scheduling system. The safe correction calculation method based on partition load control functions on the basis that the power grid operates on different levels and partitions, and that the scheduling system performs unified load control of target partition loads, and performs partitioning with the aim of minimizing loads. The system takes partition loads as control variables and considers system power flow constraints, partition controllable load constraints, and stable cross-section safety constraints, and employs a continuous power flow and route planning method in combination to obtain solutions. The method has a simple model, is easy to solve, has good convergence, and can be applied to actual scheduling as an important basis of reference for scheduling and controlling loads.

Classes IPC  ?

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

Abrégé

The application discloses a hybrid multi-source data acquisition method, device, and data storage medium. The hybrid multi-source data acquisition method comprises: establishing, according to communication methods and data source characteristics of data acquisition channels, a plurality of logical channel sets; selecting, using a multi-source channel method, an optimal channel in each of the logical channel sets; selecting, using a multi-source node method, optimal data in the optimal channel, and transmitting the same to a backend. By combining the multi-source channel method and the multi-source node method, the embodiment resolves problems of a multi-source granularity being limited to a channel level when only the multi-source channel method is adopted, and low efficiency and low reliability when only the multi-source node method is adopted, providing highly reliable power grid operational data in a power scheduling automation system, and having a favorable application prospect.

Classes IPC  ?

• H04L 29/08 - Procédure de commande de la transmission, p.ex. procédure de commande du niveau de la liaison
• 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

A quasi-inverse system control method for a nonlinear system. The method comprises the steps of: establishing a mathematical model of a controlled system according to a relationship between a control target and an input quantity as well as a state quantity; approximately converting the original controlled system into a combination of an invertible system and another system, calculating an inverse system of the invertible system, mapping a combination of input of the original system and a real-time state quantity of the controlled system by using the inverse system to obtain a new system control target directly; and mapping a combination of a feedback quantity and the real-time state quantity of the controlled system by using the inverse system as well, performing feedback PID control, and then using an output quantity after the PID control as an input quantity of the original controlled system, so as to implement approximate linear control over the original controlled system, that is, allowing the controlled system to have a quasi-linearization characteristic. The method can implement global quasi-linearization as well as fast and stable control, and finally implement optimal control over global performance indexes.

Classes IPC  ?

• G05B 11/42 - Commandes automatiques électriques avec les dispositions nécessaires pour obtenir des caractéristiques particulières, p. ex. proportionnelles, intégrales, différentielles pour obtenir une caractéristique à la fois proportionnelle et dépendante du temps, p. ex. P.I., P.I.D.

Abrégé

A voltage integral-based method for determining saturation of a transformer core. For each phase voltage on one side of a transformer, when a voltage variation exceeds a set threshold value, a sudden change of the state of the transformer is determined, the calculation of a half-cycle integral S1(t) of an absolute value of a voltage begins after said sudden voltage state change; an absolute value S2(t) of an integral of a half-cycle voltage variation which begins at the moment of said sudden voltage state change is calculated; assuming that, if any phase satisfies S(t)＞S0, then determining that the transformer core is saturated, wherein: Se represents a per-unit baseline value, and S0 is a transformer core saturation threshold value. The method focuses on the root causes that generate a magnetizing inrush current, and the magnetizing inrush currents caused by voltage changes, such as a transformer non-load closing magnetizing inrush current, a magnetizing inrush current caused by voltage recovery following fault removal, a sympathetic inrush current, and an inrush current caused by a fault or certain operations during normal operations of a transformer, may all be determined in about half a cycle.

Classes IPC  ?

• H02H 7/045 - Protection différentielle de transformateurs

Abrégé

Disclosed is a secondary electric power equipment installed on-site for facilitating heat dissipation, comprising an aluminium alloy die-casting box body (1), wherein an aluminium alloy cover plate (2) covers and is connected to the aluminium alloy die-casting box body (1); a bottom layer inside the aluminium alloy die-casting box body (1) is installed with a power supply module (3) and an alternating current sampling module (4); an IO module (5) is installed above the power supply module (3) in an overhead manner by means of nuts and bolts; a shielding plate (6) is installed above the IO module (5), with strong electric signals of the secondary electric power equipment being isolated via the shielding plate (6); a constant temperature plate (7) is installed above the alternating current sampling module (4); a communication module (8) is installed above the constant temperature plate (7); and a CPU module (9) is installed on a lower surface of the aluminium alloy cover plate (2). By means of a rational layout of modules inside the equipment, the equipment transfers heat generated by a heating element during operation to an outer wall of the aluminium alloy die-casting box body (1) by using heat conduction technologies such as the constant temperature plate (7) and PCB buried copper, and the heat is then dissipated to the surrounding air. In addition, a ventilating valve is installed, thereby realizing inside and outside air exchange, taking away some heat, and achieving good usage prospects.

Classes IPC  ?

• H02B 1/56 - RefroidissementVentilation
• H02B 1/48 - Montage de dispositifs à l'intérieur de ces boîtiers

Abrégé

An overhead-type fault indication positioning terminal, comprising a capacitive sensor disposed in an overhead line electric field. The capacitive sensor is connected to a CPU of the fault indication positioning terminal via a conditioning circuit. Also disclosed is a method for measuring a voltage to ground for the fault indication positioning terminal. The real-time measurement of a voltage to ground voltage of an overhead line is realized, the change in the voltage to ground of the overhead line is captured, and a basis is provided for the determination of a line-to-ground fault.

Classes IPC  ?

• G01R 31/08 - Localisation de défauts dans les câbles, les lignes de transmission ou les réseaux
• G01R 15/16 - Adaptations fournissant une isolation en tension ou en courant, p. ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs capacitifs

Abrégé

An electric automobile and a power grid interactive simulation load system, and an electrical protection method therefor. The system comprises a battery system, a bidirectional AC/DC module, a grid-connected control protection module and a monitoring terminal, wherein the battery system comprises a battery and a battery management system connected to the battery; the monitoring terminal is connected to the battery management system, the bidirectional AC/DC module and the grid-connected control protection module, respectively; the battery management system is further connected to the bidirectional AC/DC module; the bidirectional AC/DC module is connected to a power grid through a circuit breaker; the bidirectional AC/DC module is further connected to the grid-connected control protection module; and the grid-connected control protection module is connected to a power grid through a circuit breaker. The electrical safety problem of a device during a simulation load working process and the grid-connected safety problem when accessing a power grid are solved, and the safety of the device is improved.

Classes IPC  ?

• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Abrégé

A method of partitioning and storing a real-time distributed database in memory in an energy management system is characterized by the following steps: Step 1., numbering data in a table using an identifier number and grouping the same, wherein each data entry has a unique ID number and is assigned with a group number; Step 2., assigning, according to the assigned group number, each data entry to a corresponding partitioned file; Step 3: establishing mapping between a table ID number and a partition number, and creating an index file; and Step 4: storing according to requirements a partitioned file to different data nodes, or storing different partitioned files to a same data node. The embodiment stores different data records to different partitions, and independently stores different partitions as different files for ensuring concurrent access of the partitioned data.

Classes IPC  ?

• G06F 17/30 - Recherche documentaire; Structures de bases de données à cet effet

Abrégé

A probabilistic load flow calculation method considering power grid acceptance capacity, comprising the following steps: step 1, building a cumulative distribution function of a new energy power generation power variable according to the acceptance capacity of the power grid for new energy generation power, wherein the cumulative distribution function is described in the form of a piecewise function; step 2, calculating a sampling frequency of the new energy power generation variable in each of sections by using a proportional distribution principle, according to the built cumulative distribution function F(pk) of the new energy power generation power variable, and then by using a Latin hypercube sampling method, sampling the new energy power generation power variable in each of sections to build a sample matrix of the new energy power generation power variable; step 3, using the sample matrix of the new energy power generation power variable as an input variable to perform the probabilistic load flow calculation, to obtain a disperse result of an output variable, and fitting with an empirical distribution function to obtain a probability distribution function of the output variable. The method not only extends the application range of the Latin hypercube sampling method, but also ensures the accuracy of calculating.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

An emergency control method applicable to a wind-photovoltaic power station, belonging to the field of electrical power systems and the automation thereof. In the method, the emergency control capability of an energy storage apparatus of a wind-photovoltaic power station is preferentially used when an emergency machine set removal command is implemented, so as to reduce the power loss of machine sets, and the performance difference of all the machine sets of the wind-photovoltaic power station and a machine set repair cycle are comprehensively considered, to remove the machine sets at the lowest economic cost. The method can improve the utilization ratio of a device on the premise of guaranteeing the safety and stability of a power grid, thereby reducing the economic cost when a wind-photovoltaic power station performs emergency control.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie

Abrégé

Disclosed is an online evaluation method of a safety margin of an operating reserve in a power system, which belongs to the technical field of power system operation and control. A post-fault steady operation state of the system is obtained by considering protection and through time-domain simulation of action of an automatic safety device, and active power sensitivity of the operating reserve for power transmission equipment and a power transmission corridor is calculated based on a direct-current (DC) power flow equation of the state. A maximum capacity of the operating reserve that is useful for actual control of a steady state frequency is obtained by solving an optimization function considering a controllable interval of the operating reserve, an overload limit of the power transmission equipment and a safety and stability limit of the power transmission corridor, and aiming at maximizing the operating reserve. A maximum controllable quantity of the steady state frequency is calculated in combination with power and frequency static characteristic coefficients, achieving online evaluation of a safety margin of the operating reserve taking faults into consideration.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

A spinning reserve capacity optimization method based on a cost-performance ratio of a reserve object, which falls within the technical field of electric power system automation. In the method, a cost-performance ratio of a spinning reserve object (hereinafter referred to as a reserve object) is calculated according to the total cost thereof in a target power shortage curve scenario set (hereinafter referred to as a target scenario set) and an effective reserved electric quantity which can be provided thereby, and the reserve object which needs to be configured in this scenario set is optimized accordingly. By means of the method, the cost and performance of a reserve object can be comprehensively taken into consideration and a better optimization effect can be gained in comparison with the optimization configuration performed according to a "capacity price" of the reserve object or according to "a sum of the capacity price and an electric quantity price multiplied by an event probability". At the same time, by means of the method, uniform optimization at sending and requiring sides can be directly realized, thereby avoiding an enormous amount of calculations in a decoupling-iterative procedure between the sending and requiring sides.

Classes IPC  ?

• G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"

Abrégé

A security and stability adaptive emergency control system and method for a power system, intended to solve the technical problem of difficulty in meeting an engineering requirement by means of the existing adaptive emergency control. The existing adaptive emergency control adopts an emergency control online policy aiming at a running state before a fault moment, a running moment corresponding to the policy being always earlier than the fault moment. The security and stability adaptive emergency control system and method for a power system provide the solution of carrying out emergency control optimization decision calculation with respect to a future running state, such that there are emergency control optimization policies corresponding to the running state in periods before and after the fault moment, respectively, and using a union set of the emergency control optimization policies at the two moments as an adaptive emergency control policy at the fault moment when a 'mode word' for searching an offline policy at the fault moment is the same as 'mode words' of the emergency control optimization policies at two moments, closer to the fault moment, before and after the fault moment,, thereby implementing unified control precision and reliability and improving the engineering practicability.

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

Abrégé

Disclosed are a method for searching a cross-regional power supply area based on a common information model (CIM) and a system thereof. In the method, a hash function is first created according to a size of a power grid in which a power source is located; identification numbers of all devices in the power grid are mapped to a discrete hash table according to the hash function, and a collision is solved by using separate chaining; and a hash topological graph of the power grid is formed by using the discrete hash table; and a power supply area of a designated device is searched by using the hash topological graph. According to the present invention, devices in a power supply area are located rapidly and accurately by creating a discrete hash table for all device resources, so that the amount of computation is greatly reduced, and the efficiency of searching the power supply area is significantly improved.

Classes IPC  ?

• G06F 7/02 - Comparaison de valeurs numériques
• G06F 7/04 - Contrôle d'égalité, c.-à-d. pour valeurs égales ou non
• G05B 19/048 - ContrôleSécurité
• G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projetsPlanification d’entreprise ou d’organisationModélisation d’entreprise ou d’organisation
• G06F 17/30 - Recherche documentaire; Structures de bases de données à cet effet

Abrégé

Disclosed in the present invention are an integrated bus system integrating an Ethernet bus, a synchronous serial bus and a field bus CAN and a technology for integration realization by utilizing the FPGA. In this technical solution, the FPGA serves as the carrier, an internal very-large-scale programmable logic circuit is employed to design functional circuit modules of the three buses, and all the circuit modules independently work in parallel on the basis of a streamline working mode to realize the communication functions of the Ethernet bus, the synchronous serial bus and the field bus CAN.

Classes IPC  ?

• G05B 15/02 - Systèmes commandés par un calculateur électriques

Abrégé

An integrated system and a method for figure/model/data of a main distributed grid based on remote retrieval and information interaction are disclosed in the present invention. The system integrates the figure information, the model information and the real-time data in a main grid power transmission and transformation system into an application system by processing methods such as remote retrieval, SVG figure file importing, CIM model file importing, event service mechanism and message mechanism and the like, and reduces the mutual information dependence to a minimum, when importing the model information, the figure information and the real-time data in the main grid power transmission and transformation system into the application system.

Classes IPC  ?

• G06Q 50/06 - Fourniture d’énergie ou d’eau

Abrégé

Disclosed are a method and system for searching a cross-regional power supply range based on a CIM model, the method comprising: creating a hash function according to the size of a power grid of the power supply voltage; mapping identification numbers of all devices in the power grid to a discrete hash table according to the hash function, using a chain address to resolve a conflict, and using the discrete hash table to form a hash topological graph of the power grid; and using the hash topological graph to search the power supply range of a specific device. The method and system can quickly locate devices within a power supply range by establishing a discrete hash table for all device resources, thus greatly reducing the amount of computation and improving the efficiency of searching within the power supply range.

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

An excitation system based on double excitation windings, comprising a primary excitation winding (L1) and a subsidiary excitation winding (L2), wherein the magnetic fields of the two excitation windings are coupled via a rotor core. The primary excitation winding ( L1) is used for providing a rotating magnetic field under the non-strong excitation condition of a generator, and the subsidiary excitation winding (L2) is used for providing a rotating magnetic field for realizing strong excitation under the strong excitation condition of the generator.

Classes IPC  ?

• H02P 7/06 - Dispositions pour réguler ou commander la vitesse ou le couple de moteurs électriques à courant continu pour réguler ou commander individuellement un moteur dynamo-électrique à courant continu en faisant varier le champ ou le courant d'induit
• H02P 9/30 - Dispositions pour la commande de génératrices électriques de façon à obtenir les caractéristiques désirées à la sortie par variation du champ utilisant des tubes à décharge ou des dispositifs à semi-conducteurs utilisant des dispositifs à semi-conducteurs

Abrégé

An adaptive emergency control method for voltage security and stability based on synchronous measurement information. According to the method, based on synchronous measurement data of bus voltages and branch tidal currents collected in real time, an equation reflecting a correlation between a variation of the bus voltages and active and reactive variations of each bus load is established, and an optimization method is adopted to carry out simultaneous resolution of an equation set reflecting an incidence relation among a plurality of operating points of an actually measured operating trajectory to obtain the sensitivity, of injection of active and reactive power into each bus, to the bus voltage; in consideration of the priority and price of load control, and in controllable reactive device switching and a load control measure space, reactive device switching and load control measures that satisfy voltage security and stability requirements of each bus with the lowest control price are searched for. The method can implement coordination and optimization emergency control for preventing voltages from losing security and stability.

Classes IPC  ?

• H02J 3/12 - 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

Abrégé

A bidirectional interaction method for an E-format stability control scheme in a smart stability control system, belonging to the technical field of electric power systems and automation thereof. The method uploads in a centralized manner to a WARMAP system an offline stability control scheme in an SCS group; then, a stability control scheme import module in the WARMAP system performs automatic parsing and intelligent management of the offline stability control scheme; the WARMAP system then issues in real time an online stability control scheme, thereby automatically refreshing an online stability control scheme in an SCS group. The present application achieves bidirectional interaction of an E-format stability control scheme in a smart stability control system, effectively reducing the workload for stability control scheme maintenance and improving the intelligence and reliability of the control scheme of a stability control system.

Classes IPC  ?

• G05B 15/00 - Systèmes commandés par un calculateur
• G06F 3/00 - Dispositions d'entrée pour le transfert de données destinées à être traitées sous une forme maniable par le calculateurDispositions de sortie pour le transfert de données de l'unité de traitement à l'unité de sortie, p. ex. dispositions d'interface
• G06F 13/38 - Transfert d'informations, p. ex. sur un bus

Abrégé

The invention provides an automatic mapping method for a distribution network based on logical layout. The method includes: (1) pretreating a model of the distribution network model by analyzing it, and partitioning and striping the distribution network model to generate a plurality of partial models; (2) analyzing an automatic mapping algorithm to be utilized by comparing a distribution network graph obtained by the algorithm with the distribution network model; (3) achieving automatic layout of the partial models or the whole distribution network model on the basis of analysis of the automatic mapping algorithm to be utilized; and (4) analyzing and treating the automatic layout to achieve the generation of the distribution network graph with a desired practical effect.

Classes IPC  ?

• G06F 17/50 - Conception assistée par ordinateur
• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif