Abstract

The present invention relates to the field of transformer assembly, and relates in particular to a method for integrally grasping, positioning, stacking, and laminating single-batch, uniform-wide sheet materials for a transformer core. The method comprises the following steps: S1: counting the number of sheet materials of each width and sheet type required for a plurality of cores; S2: shearing a large coil of silicon steel into silicon steel strips of corresponding widths; S3: shearing silicon steel strips of each width into corresponding sheet types, and placing the sheared sheet materials into trays, each batch of sheet materials being separated by a partition plate; S4: using a manipulator to pick up one batch of sheet materials from each tray at a time, placing same at a lamination station, and performing a laminating operation, each lamination station forming a single core column upon completion of the lamination; and S5: transferring the single core column to a subsequent process to complete core assembly. According to the present invention, sheet materials for a plurality of cores are uniformly punched and sheared, so that the production efficiency of transverse cutting can be improved by about 20%; each batch of sheet materials is separated by a partition plate, and a manipulator picks up one batch of sheet materials at a time for lamination, so that core lamination efficiency can be increased by three to four times.

IPC Classes  ?

• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets

Abstract

Disclosed in the present invention are a circuit breaker protection method and system for circuit data identification, relating to the technical field of circuit breakers. The method comprises: arranging a monitoring element in a distribution network line, recording location information, and determining a monitoring area; reading monitoring data of the monitoring element, and performing anomaly identification by means of the monitoring data; when abnormal data exist, positioning an abnormal monitoring area based on a data source location of the abnormal data, and awakening circuit breakers in the abnormal monitoring area; inputting the abnormal data into an anomaly positioning model; matching a circuit breaker in a wake-up state based on an anomaly positioning result, and sending open circuit control information to the matched circuit breaker; and receiving open circuit control response information, and completing circuit protection processing of the abnormal data based on the open circuit control response information. The present invention solves the technical problems of low response intelligence degree and poor control quality of the circuit breaker protection in the prior art, thereby achieving the technical effects of improving the quality of the circuit breaker protection and enhancing the safety and reliability of the circuit.

IPC Classes  ?

• H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
• G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
• H02H 7/22 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systemsEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for switching devices
• H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network

Abstract

The present invention relates to the technical field of intelligent manufacturing. Provided are a GIS manufacturing optimization method and system based on service-life evaluation. The method comprises: generating an application environment simulation model on the basis of application environment information of a GIS; performing fatigue-life evaluation on the basis of geometrical structure parameters and material SN characteristics, so as to generate a first fatigue-life coefficient; performing transmission fatigue-life evaluation according to geometrical transmission structure parameters, so as to generate a second fatigue-life coefficient; generating a switchgear service-life evaluation result; and performing structure and material optimization of the switchgear. The present invention solves the technical problem in the prior art of it not being possible for a final optimized manufacturing result to reach an expected energy efficiency caused by the inaccurate determination of an optimization starting point and the insufficient combination between the control scale of preparation parameters and an actual application environment during GIS manufacturing optimization; and by means of performing environment simulation, performing optimization analysis on the basis of multiple dimensions and performing manufacturing parameter optimizing checking to select optimal parameters, optimization control is precisely performed, thereby achieving an optimal manufacturing effect.

IPC Classes  ?

• G06F 30/17 - Mechanical parametric or variational design

Abstract

A gas-insulated switchgear (GIS) quality detection method and system in a specific environment, which method and system relate to the field of GIS detection. The method comprises: acquiring a plurality of fault susceptibility coefficients and a plurality of fault shutdown rate coefficients; obtaining a plurality of specific fault susceptibility coefficients and a plurality of specific fault shutdown rate coefficients in a specific environment; calculating a plurality of fault susceptibility deviation parameters and a plurality of fault shutdown rate deviation parameters; inputting the plurality of fault susceptibility deviation parameters and the plurality of fault shutdown rate deviation parameters into a fault type detection frequency analysis model, so as to obtain a plurality of fault type detection frequency adjustment coefficients; and adjusting preset detection frequencies of various fault types by using the fault type detection frequency adjustment coefficients, and performing GIS quality detection in a target specific environment. By means of the method, the technical problem in the prior art of it not being possible to accurately detect a fault of a GIS in a timely manner due to a poor quality detection effect of the GIS is solved, thereby achieving the technical effect of accurately detecting the fault of the GIS in a timely manner.

IPC Classes  ?

• G01R 31/12 - Testing dielectric strength or breakdown voltage
• G01D 21/02 - Measuring two or more variables by means not covered by a single other subclass

Abstract

The present invention relates to a micro switch, and relates in particular to a micro switch used for a location signal device of a breaker and a location signal device of a breaker using the micro switch. A micro switch used for a location signal device of a breaker, wherein the micro switch is provided with a housing and a moving sheet, the housing is provided with a contact, an end of the moving sheet is connected to the housing, the connection position between the moving sheet and the housing acts as a pivot for movement, and when the moving sheet is pressed, the moving sheet is pressed down to touch the contact; a free end of the moving sheet is V-shaped or semi V-shaped; top and bottom sides of the housing of the micro switch are provided with insulating gaskets. The present invention solves the problem wherein the reliability of signal feedback is low due to a micro switch easily being touched by mistake when isolation and test distances are small, and also solves the problem wherein the requirements for the precision of drawer trilocation is high.

IPC Classes  ?

• H02B 11/10 - Indicating electrical condition of gearArrangement of test sockets
• H02B 11/173 - Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal drawer type
• H01H 71/04 - Means for indicating condition of the switching device

Abstract

Disclosed is a main shaft limiting device, relating to the technical field of low-voltage electrical components, parts and equipment. The present invention comprises a moving contact assembly, a static contact assembly and a main shaft, and further comprises a limiting plate, and a cantilever fixedly provided on the main shaft, wherein the limiting plate freely rotates by using a rotary shaft as an axis, an upper end of the limiting plate is provided with a first abutting portion, a lower end of the limiting plate is provided with a second abutting portion, a lower end of the cantilever is provided with a second protrusion in cooperation with the second abutting portion, and an upper end of the cantilever is provided with a first protrusion. When in an opening state, the first protrusion collides with the first abutting portion, and by means of the first abutting portion pushing the second abutting portion, the second abutting portion pulls the second protrusion of the cantilever, thus preventing the main shaft from springing back. The main shaft limiting device of the present invention has a simple structure and a small number of parts and occupies little space. The present invention is realized by using the structure of the limiting plate itself and the principle of gravity, and improves the impact resistance of the limiting plate and effectively prevents the main shaft from springing back, thus improving short-time tolerance indexes of a frame-type circuit breaker.

IPC Classes  ?

• H01H 71/10 - Operating or release mechanisms
• H01H 71/12 - Automatic release mechanisms with or without manual release

Abstract

A frame-integrated dual power supply, relating to the technical field of low voltage electrical devices. The frame-integrated dual power supply comprises a switching mechanism, an operating mechanism, and two contact assemblies. Each contact assembly comprises a moving contact (32, 34) and a static contact (31, 35). The two moving contacts (32, 34) are connected to each other by means of a connecting shaft; a rotating shaft is provided on the connecting shaft, and the two moving contacts (32, 34) can rotate about the rotating shaft; one end of the switching mechanism is provided with two branches respectively connected to the moving contacts (32, 34), and the other end is shifted by a handle (15) to pre-select the switch-on direction; the operating mechanism pushes the switching mechanism so that the switching mechanism pushes the moving contact (32, 34) in the pre-selected switch-on direction, in order to switch on the contact assembly at this end. The present invention is simple in structure, convenient in operation, reliable in switching, and high in safety performance.

IPC Classes  ?

• H01H 9/24 - Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
• H01H 3/32 - Driving mechanisms, i.e. for transmitting driving force to the contacts

Abstract

The present invention relates to the technical field of switch cabinets, and disclosed thereby is an alternative propulsion mechanism for a drawer. The invention comprises a control mechanism, a propulsion mechanism, a working position contact, and a test position contact; the control mechanism comprises a first gear linkage mechanism, a left rack plate, and a right rack plate; the propulsion mechanism comprises a second gear linkage mechanism and a third gear linkage mechanism; the first gear linkage mechanism is driven by an operating mechanism at the exterior of a drawer panel, thereby controlling the left and right rack plates at the interior of the drawer panel to move toward or away from each other; the left and right rack plates achieve the successive connection of the test position contact and the working position contact as well as the successive disconnection of the working position contact and the test position contact respectively by means of the linkage effect of the second gear linkage mechanism and the third gear linkage mechanism. By means of the alternative propulsion mechanism for a drawer provided in the present invention, a drawer (equivalent to a device carrier) does not need to be moved, and control between contact states of a drawer switch cabinet circuit may be achieved merely by using one operation tool, thus saving labor and being highly efficient, while being more secure.

IPC Classes  ?

• H02B 11/127 - Withdrawal mechanism

Abstract

A propulsion mechanism (1) for contacts in a drawer-type switch cabinet, comprising a control mechanism, a propulsion mechanism, a working position contact (5) and a test position contact (4); the control mechanism is a gear shaft (2), the propulsion mechanism comprises a first gear (31), a second gear (32), a first rack plate (34) and a second rack plate (36), the first gear being fixed on the gear shaft, and being provided with some of the gear teeth, the gear teeth on the first gear being mated with the first rack plate; the second gear is fixed on the gear shaft, and is provided with some of the gear teeth, the gear teeth on the second gear being mated with the second rack plate; the working position contact is fixed on the second rack plate, and the test position contact is fixed on the first rack plate; and when the gear shaft rotates, the first gear drives the first rack plate to move upward, so as to drive the test position contact to move upward, and when the first rack plate no longer moves upward, the second gear starts to drive the second rack plate to move upward, so as to drive the working position contact to move upward. The contact propulsion mechanism can control the contacts in a drawer-type switch cabinet in a more easy and efficient way.

IPC Classes  ?

• H02B 11/04 - Isolating-contacts, e.g. mountings or shieldings
• H02B 11/127 - Withdrawal mechanism

Abstract

A combined outlet device, which belongs to the field of low-voltage power distribution and control, comprises a moving contact assembly (3) and a fixed contact assembly (4), and the fixed contact assembly comprises a contact (11) and a second conductor; the contact comprises two contact pieces (12), wherein the two contact pieces are symmetrically arranged by taking a fixing pin (14) as the center, thus forming a first open end in which one end is for being inserted in a first conductor and a second open end in which the other end is inserted in the second conductor; the two contact pieces achieve open-close clamping by means of an elastic clamping device, and protrusions (15) arranged opposite to each other are disposed at inner sides of the contact pieces near the first open end, such that an inserting end forms an opening (16) to be inserted; the moving contact assembly comprises a pre-tensioning device and the first conductor; and both the moving contact assembly and the fixed contact assembly are relatively movable, such that the contacts and the first conductor touch or separate. The combined and detachable outlet device is easy to install, and when the contacts are inserted in copper bars in a drawer, the contacts are guaranteed to not wear out, and the loss of energy is reduced.

IPC Classes  ?

• H02B 11/04 - Isolating-contacts, e.g. mountings or shieldings
• H01R 13/502 - BasesCases composed of different pieces

Abstract

A conductor insulating and positioning apparatus, relating to the field of low-voltage power distribution. The positioning apparatus comprises two fixing sleeve shells used for fixing a conductor (1), the fixing sleeve shells comprising a first cover shell (2) and a second cover shell (3) fixedly connected to one another at an angle, an opening (4) being provided in the opposite position to the first cover shell and the second cover shell, the cross-section of the first cover shell being wider than the cross-section of the second cover shell, and a clamping structure for implementing relative detachable fastening and mounting of the two fixing sleeve shells being arranged on two side edges inside the fixing sleeve shells. By means of the clamping structure arranged on the two side edges in the fixing sleeve shells, when the two fixing sleeve shells are mounted opposite one another, the conductor insulating and positioning apparatus of the present invention can implement a detachable fixed connection without disconnecting the conductor, achieving convenient and quick mounting without the need for nuts and bolts, and saving costs. In addition, the fixing hole (9) and the processing rib (7) arranged inside the insulating apparatus increase the creepage distance, ensuring the electrical clearance and enhancing the strength of insulation.

IPC Classes  ?

• H01R 13/516 - Means for holding or embracing insulating body, e.g. casing

Abstract

A movable line feeder, pertaining to the field of low-voltage power distribution and control. The movable line feeder comprises a contact terminal (1) and a feeding housing (2). The contact terminal comprises two contacts (3). The two contacts are disposed symmetrically with a fixing pin (4) as a center, forming at one end a first open end at which is inserted a vertical copper bar, and at the other end a second open end at which is inserted a connecting terminal bar. The two contacts are elastically clamped by means of an elastic clamping device. The inner side of the contact near the first open end has oppositely disposed protrusions, such that the insertion end forms a pre-insertion opening (6). The contact terminal is disposed in the feeding housing, and the feeding housing is provided with an advance-opening mechanism that can be pushed into the pre-insertion opening to open the first open end in advance. The movable line feeder can be connected to a vertical copper bar of a drawer cabinet without the need to move the entire drawer cabinet, and ensures that a contact terminal does not experience wear during insertion of the vertical copper bar of the drawer cabinet into the contact terminal, reducing energy loss and failure rates, and improving the service life and reliability of the feeder.

IPC Classes  ?

• H01R 13/02 - Contact members
• H01R 13/40 - Securing contact members in or to a base or caseInsulating of contact members

Abstract

AgrnetAgrAgrnetAgr netBAgrnetAgr netnet, the micro-grid central controller issues a command to the battery management system to stop the output of the energy storage unit and the energy storage unit begins charging. The method has a fast response, is a simple solution and achieves good stability.

IPC Classes  ?

• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

Disclosed by the present invention is a method for controlling stability when a microgrid grid connection switches to island operation mode, i.e., collecting respective electrical quantities of a microgrid and an interconnection wire by means of a microgrid central controller and a rapid measuring and control unit, and obtaining the real-time operating state of the microgrid by receiving an instruction from a high-level system; in case of a planned island, calculating the real-time load and power source output of the microgrid system, and determining whether a source and load are balanced; otherwise, when the system satisfies island criteria, switching a primary power source from a PQ operation mode to a V/f operation mode, and turning off a PCC switch, then determining whether the system operates normally; if the system is abnormal, immediately cutting off a faulty circuit when the faulty circuit is detected, and re-starting determination; if the system is normal, determining whether a source and load are balanced within the microgrid system; if the source and load are unbalanced, calculating the quantity of power imbalance, adjusting the output of stored energy, and then determining again whether a source and load are balanced; if the source and load are unbalanced, performing load reduction at low voltage/low frequency, and determining again whether a source and load are balanced. The present invention can implement a simple manner of detection, having good stability.

IPC Classes  ?

• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers