Low-voltage switch cabinet testing device and method, electronic device and storage medium

Abstract

The application discloses a low-voltage switch cabinet testing device and method, electronic equipment and storage medium. The device comprises a power module, a three-phase inverter, a first circuit breaker, a second circuit breaker, a first three-phase four-wire terminal, a second three-phase four-wire terminal, at least two contactors, at least two on-off control switches and at least two three-phase four-wire terminals. The at least two on-off control switches are respectively connected with the at least two contactors, and the at least two contactors are connected with the second circuit breaker. The at least two contactors are respectively connected with the at least two three-phase four-wire terminals. The power module provides power supply for each module. The three-phase inverter converts direct current into three-phase four-wire power supply. The on-off control switch controls the conduction or disconnection of the contactor. The technical scheme of the application provides two power supply modes, which can be used in different environments and on-site requirements, reduces the safety risk and improves the operation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power grid equipment testing, and in particular to a low-voltage switch cabinet testing device and method, electronic equipment and a storage medium. BACKGROUND

[0002] Low-voltage switch cabinets are widely used in power distribution networks, and compared with other devices, low-voltage switch cabinets are closely related to the user side. The failure rate of low-voltage switch cabinets increases with the running time, and once a failure occurs, it will have a great impact on the life of residents, industrial production and social stability. Therefore, the operation and maintenance of low-voltage switch cabinets is very important. At the same time, with the rapid increase of residential and industrial electricity consumption, the construction and reconstruction investment of low-voltage switch cabinets in the power distribution network is increasing, and the operation of low-voltage switch cabinets is also increasing. Before operation, 3-out-of-3 and 3-out-of-2 tests are required.

[0003] In the past, during the operation and maintenance or pre-test of the low-voltage switch cabinet, the operating personnel need to output power on both sides of the generator output switch. When switching the output power, the wiring terminal needs to be frequently removed, and the power switching operation is complex. The power output port has no obvious disconnection point, and the safety is insufficient. The generator is large in size and inconvenient to carry, which leads to low work efficiency of the operation and maintenance and test of the low-voltage switch cabinet, large labor cost, and safety needs to be improved. SUMMARY

[0004] The present application provides a low-voltage switch cabinet testing device, method, electronic equipment and storage medium to solve the problem of low work efficiency of the operation and maintenance and test of the low-voltage switch cabinet.

[0005] According to an aspect of the present application, a low-voltage switch cabinet testing device is provided, comprising: a power module, a three-phase inverter, a first circuit breaker, a second circuit breaker, a first three-phase four-wire terminal, a second three-phase four-wire terminal, at least two contactors, at least two on-off control switches, and at least two three-phase four-wire terminals.

[0006] The power module is connected with the three-phase inverter, the three-phase inverter is connected with the first circuit breaker, the first circuit breaker is connected with the first three-phase four-wire terminal, the second circuit breaker is connected with the second three-phase four-wire terminal, the at least two on-off control switches are respectively connected with the at least two contactors, and the at least two contactors are respectively connected with the second circuit breaker. The at least two contactors are also respectively connected with the at least two three-phase four-wire terminals one by one.

[0007] The power module is used to provide power for each module; the three-phase inverter is used to convert direct current into three-phase four-wire power; and the on-off control switch is used to control the conduction or disconnection of the contactor.

[0008] Optionally, the second three-phase four-wire terminal is connected with the first three-phase four-wire terminal; or,

[0009] The second three-phase four-wire terminal is connected with an external three-phase power supply.

[0010] Optionally, the low-voltage switch cabinet testing device further comprises a three-phase protection module and a three-phase parameter display module.

[0011] The three-phase protection module is connected with the three-phase inverter, and is configured to monitor the three-phase power supply output; the three-phase parameter display module is connected with the second circuit breaker, and is configured to display three-phase data.

[0012] Optionally, the on-off control switch is a remote control switch, and the closing and opening of the on-off control switch are interlocked.

[0013] According to another aspect of the present application, a low-voltage switch cabinet testing method is provided, which uses the low-voltage switch cabinet testing device according to any one of the above embodiments, and comprises the following steps:

[0014] The second three-phase four-wire terminal is connected, and the low-voltage switch cabinet testing device is turned on.

[0015] After the at least two three-phase four-wire terminals connected with the at least two contactors are connected with the low-voltage switch cabinet to be tested, the at least two on-off control switches corresponding to the at least two contactors are used to transmit on-off operation instructions, respectively.

[0016] The low-voltage switch cabinet is tested, and voltage and current data of the three-phase power supply output bus in the testing process are obtained.

[0017] Optionally, the second three-phase four-wire terminal is connected, and the low-voltage switch cabinet testing device is turned on, which comprises the following steps:

[0018] The second three-phase four-wire terminal is connected with the first three-phase four-wire terminal, and the low-voltage switch cabinet testing device is turned on; or,

[0019] The second three-phase four-wire terminal is connected with an external three-phase power supply, and the low-voltage switch cabinet testing device is turned on.

[0020] Optionally, the at least two three-phase four-wire terminals connected with the at least two contactors are connected with the low-voltage switch cabinet to be tested; the at least two on-off control switches corresponding to the at least two contactors are used to perform on-off operations, respectively, which comprises the following steps:

[0021] The first circuit breaker is closed, so that the three-phase power supply supplies power to the low-voltage switch cabinet, and the at least two on-off control switches corresponding to the at least two contactors are used to perform on-off operations, respectively; or,

[0022] The external three-phase power supply supplies power to the low-voltage switch cabinet, and at least two contactors are respectively controlled by at least two corresponding on-off control switches.

[0023] Optionally, the low-voltage switch cabinet is tested, and voltage and current data of the three-phase power supply output bus during the testing process are obtained, including:

[0024] The low-voltage switch cabinet is tested, and the three-phase protection module is used to obtain voltage and current data of the three-phase power supply output bus inside the device during the testing process; or,

[0025] The low-voltage switch cabinet is tested, and the three-phase parameter display module is used to obtain current and voltage data of the three-phase power supply output bus outside the device during the testing process.

[0026] According to another aspect of the present application, an electronic device is provided, which comprises:

[0027] at least one processor; and

[0028] a memory connected to the at least one processor in communication; wherein,

[0029] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the low-voltage switch cabinet testing method according to any one of the embodiments of the present application.

[0030] According to another aspect of the present application, a computer readable storage medium is provided, which stores computer instructions for enabling a processor to implement the low-voltage switch cabinet testing method according to any one of the embodiments of the present application when executed.

[0031] The technical scheme of the embodiment of the present application provides two power supply modes, which can be used in different environments and on-site requirements, reduces the safety risk, and improves the work efficiency.

[0032] It is to be understood that the details set forth herein do not limit the scope of the embodiments of the application to the specific embodiments described. Rather, the scope of the embodiments of the application is to be defined by the claims. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0034] Figure 1 is a structural schematic diagram of a low-voltage switch cabinet test device according to an embodiment of the present application;

[0035] Figure 2 is an exploded view of a low-voltage switch cabinet test device according to an embodiment of the present application;

[0036] Figure 3 is a flow chart of a low-voltage switch cabinet test method according to an embodiment of the present application;

[0037] Figure 4 is a structural schematic diagram of an electronic device for implementing a low-voltage switch cabinet test method according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to make the technical personnel in the art better understand the present application scheme, the following will combine the drawings in the embodiments of the present application, and the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of the present application.

[0039] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and their variants are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0040] Figure 1 A structural diagram of a low-voltage switch cabinet testing device is provided for an embodiment of the present application. The embodiment can be applicable to pre-shipment inspection, preventive testing, insulation performance testing, and daily maintenance and repair of high and low voltage switch cabinets in power distribution networks. The device can be implemented in the form of hardware and / or software, and can be configured in various power systems and industrial facilities. As shown in the figure, the device includes a power module 101, a three-phase inverter 102, a first circuit breaker 103, a second circuit breaker 106, a first three-phase four-wire terminal 104, a second three-phase four-wire terminal 105, at least two contactors 107, at least two on-off control switches 108, and at least two three-phase four-wire terminals 109. Figure 1

[0041] The power module 101 is connected to the three-phase inverter 102, the three-phase inverter 102 is connected to the first circuit breaker 103, the first circuit breaker 103 is connected to the first three-phase four-wire terminal 104, the second circuit breaker 106 is connected to the second three-phase four-wire terminal 105, the at least two on-off control switches 108 are respectively connected to the at least two contactors 107, and the at least two contactors 107 are respectively connected to the second circuit breaker 106. The at least two contactors 107 are also respectively connected to the at least two three-phase four-wire terminals 109.

[0042] The power module 101 is used to provide power for each module; the three-phase inverter 102 is used to convert direct current into three-phase four-wire power; and the on-off control switch 108 is used to control the conduction or disconnection of the contactor 107. When the first three-phase four-wire terminal 104 is connected to the second three-phase four-wire terminal 105, the circuit breaker is closed,

[0043] The power module 101 can use a lithium battery to provide power for the device by converting direct current into three-phase four-wire power through the three-phase inverter 102. The three-phase four-wire terminal can be connected to the test line, and the at least two three-phase four-wire terminals 109 connected to the at least two contactors 107 can be connected to the power port of the low-voltage switch cabinet. The on-off control switch 108 can control the conduction or disconnection of the contactor 107, thereby controlling the opening or closing of the low-voltage switch cabinet test. Specifically, the second three-phase four-wire terminal 105 can be connected to the first three-phase four-wire terminal 104, at which time the three-phase four-wire power output by the power module 101 in the device through the three-phase inverter 102 provides power, and the first circuit breaker 103 can control the connection or disconnection of the power module 101. The second three-phase four-wire terminal 105 can also be connected to an external three-phase power supply, at which time the external three-phase power supply provides power, and the second circuit breaker 106 can control the connection or disconnection of the external three-phase power supply.

[0044] ​The technical scheme of the embodiment of the application provides two power supply modes, can be used in different environments and on-site requirements, reduces the safety risk, and improves the operation efficiency.

[0045] With reference to Figure 1 In some optional embodiments of the application, the second three-phase four-wire terminal 105 is connected with the first three-phase four-wire terminal 104; or,

[0046] The second three-phase four-wire terminal 105 is connected with an external three-phase power supply.

[0047] The second three-phase four-wire terminal 105 can be supplied with power by the three-phase four-wire power output by the power module 101 in the device through the three-phase inverter 102 when the second three-phase four-wire terminal 105 is connected with the first three-phase four-wire terminal 104, and the second three-phase four-wire terminal 105 can be supplied with power by the external three-phase power supply when the second three-phase four-wire terminal 105 is connected with the external three-phase power supply. The power supply mode can be selected according to different environments and on-site requirements.

[0048] With reference to Figure 1 In some optional embodiments of the application, a three-phase protection module 1010 and a three-phase parameter display module 1011 are further included.

[0049] The three-phase protection module 1010 is connected with the three-phase inverter 102, and is used for monitoring the three-phase power output; the three-phase parameter display module 1011 is connected with the second circuit breaker 106, and is used for displaying three-phase data.

[0050] The three-phase protection module 1010 detects the voltage and current of the output bus of the three-phase inverter 102, implements a protection function according to parameters, avoids serious three-phase imbalance, short circuit, overload, overheating, overcurrent, overvoltage and the like, and guarantees the safe operation of the device to be tested and the reliability of the test result. The three-phase parameter display module 1011 monitors the data of the bus after the second three-phase four-wire terminal 105, displays the current voltage data in real time, and guarantees the safe operation of the device to be tested.

[0051] With reference to Figure 1 In some optional embodiments of the present application, the on-off control switch 108 is a remote control switch, and the closing and opening of the on-off control switch 108 are interlocked.

[0052] The on-off control switch 108 can be a remote control switch, which can be controlled by a remote signal, improving the convenience and safety of operation. The closing and opening are interlocked, which means that the closing and opening operations cannot occur at the same time. The interlocking ensures that when the closing operation is in progress, the opening operation is locked, and vice versa. It can prevent the simultaneous closing and opening operations, thereby avoiding possible short circuits, arcs or other dangerous situations, ensuring the safe operation of the circuit and the protection of the equipment.

[0053] Figure 2 is an exploded view of a low-voltage switch cabinet testing device according to an embodiment of the present application. As Figure 2 shown, the low-voltage switch cabinet testing device further comprises a housing back plate 1012, a housing bottom plate 1019, a housing side plate 1017, and a housing front plate with a handle 1018, an input socket 1013, a three-phase voltage meter 1014, a grounding interface 1015, and a power switch 1016.

[0054] Figure 3 is a flowchart of a low-voltage switch cabinet testing method according to an embodiment of the present application, which uses the low-voltage switch cabinet testing device of any of the above embodiments, and refers to Figure 1 and Figure 3 , the low-voltage switch cabinet testing method comprises:

[0055] S201, wiring the second three-phase four-wire terminal 105, and turning on the low-voltage switch cabinet testing device.

[0056] The second three-phase four-wire terminal 105 can be connected to the first three-phase four-wire terminal 104 or connected to an external three-phase power supply, according to different environments and on-site requirements, different wiring methods are selected. After wiring, turn on the low-voltage switch cabinet testing device.

[0057] S202, after connecting the to-be-tested low-voltage switch cabinet to the at least two three-phase four-wire terminals 109 connected to the at least two contactors 107, respectively transmitting the on-off operation instructions to the at least two contactors 107 using the corresponding at least two on-off control switches 108.

[0058] With reference to Figure 1 , the at least two three-phase four-wire terminals 109 connected to the at least two contactors 107 are connected to the power port of the to-be-tested low-voltage switch cabinet, and after connection, the at least two on-off control switches 108 send on-off operation instructions to the corresponding at least two contactors 107 to control the connection or disconnection of the circuit.

[0059] S203, perform low-voltage switch cabinet test, and acquire voltage and current data of three-phase power output bus in test process.

[0060] Continuing to refer to Figure 1 After the at least two on-off control switches 108 control the circuit to be connected by sending on-off operation instructions, the low-voltage switch cabinet test is performed, and in the test process, the current and voltage of the output bus after the three-phase power of the low-voltage switch cabinet test device can be detected through the three-phase parameter display module 1011 or the three-phase protection module 1010, so as to avoid serious three-phase imbalance, short circuit, overload, overheating, overcurrent, overvoltage and the like, and ensure the safe operation of the to-be-tested equipment and the reliability of the test result.

[0061] The technical scheme of the embodiment of the application is that the second three-phase four-wire terminal is connected to turn on the low-voltage switch cabinet test device. The second three-phase four-wire terminal can be connected with the first three-phase four-wire terminal or connected with an external three-phase power supply. According to different environments and on-site requirements, different connection modes can be selected. After the connection is completed, the low-voltage switch cabinet test device is turned on, and after the to-be-tested low-voltage switch cabinet is connected, the at least two on-off control switches send on-off operation instructions to the corresponding at least two contactors to control the connection of the circuit, so as to perform the low-voltage switch cabinet test. Each contactor is operated by the on-off button to ensure the reliable control of the contactor, and the terminal is not frequently disconnected, thereby improving the work efficiency.

[0062] In some optional embodiments of the application, continuing to refer to Figure 1 The second three-phase four-wire terminal 105 is connected to turn on the low-voltage switch cabinet test device, which includes the following steps:

[0063] The second three-phase four-wire terminal 105 is connected with the first three-phase four-wire terminal 104 to turn on the low-voltage switch cabinet test device; or

[0064] The second three-phase four-wire terminal 105 is connected with an external three-phase power supply to turn on the low-voltage switch cabinet test device.

[0065] The second three-phase four-wire terminal 105 can be connected with the first three-phase four-wire terminal 104, and in this case, the power supply module 101 in the device is used for power supply; when the second three-phase four-wire terminal 105 is connected with an external three-phase power supply, the external three-phase power supply is used for power supply. According to different environments and on-site requirements, the power supply mode can be selected. After the power supply mode is selected, the low-voltage switch cabinet test device can be turned on for test.

[0066] In some optional embodiments of the application, continuing to refer to Figure 1At least two three-phase four-wire terminals 109 connected with at least two contactors 107 are connected to the low-voltage switch cabinet to be tested; at least two contactors 107 respectively use corresponding at least two on-off control switches 108 to perform on-off operation, including:

[0067] The first circuit breaker 103 is closed to enable the three-phase power supply to supply power to the low-voltage switch cabinet, and at least two contactors 107 respectively use corresponding at least two on-off control switches 108 to perform on-off operation; or,

[0068] The external three-phase power supply supplies power to the low-voltage switch cabinet, and at least two contactors 107 respectively use corresponding at least two on-off control switches 108 to perform on-off operation.

[0069] Wherein, after the second three-phase four-wire terminal 105 is connected with the first three-phase four-wire terminal 104, the first circuit breaker 103 is closed, at this time, the low-voltage switch cabinet can be powered by the three-phase power supply converted by the internal power supply module 101 through the three-phase inverter 102; after the second three-phase four-wire terminal 105 is connected with the external three-phase power supply, the low-voltage switch cabinet is powered by the external three-phase power supply. At least two contactors 107 respectively use corresponding at least two on-off control switches 108 to perform on-off operation, and after the control circuit is connected, the low-voltage switch cabinet test is performed;

[0070] In some optional embodiments of the present application, with continuous reference to Figure 1 The low-voltage switch cabinet test is performed, and the voltage and current data of the three-phase power supply output bus during the test process are obtained, including:

[0071] The low-voltage switch cabinet test is performed, and the voltage and current data of the three-phase power supply output bus during the test process are obtained, including:

[0072] The low-voltage switch cabinet test is performed, and the voltage and current data of the three-phase power supply output bus during the test process are obtained, including:

[0073] Wherein, after the second three-phase four-wire terminal 105 is connected with the first three-phase four-wire terminal 104, the first circuit breaker 103 is closed, at this time, the low-voltage switch cabinet can be powered by the three-phase power supply converted by the internal power supply module 101 through the three-phase inverter 102; after the second three-phase four-wire terminal 105 is connected with the external three-phase power supply, the low-voltage switch cabinet is powered by the external three-phase power supply. At least two contactors 107 respectively use corresponding at least two on-off control switches 108 to perform on-off operation, and after the control circuit is connected, the low-voltage switch cabinet test is performed;

[0074] Figure 4A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0075] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0076] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0077] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as low-voltage switchgear testing methods.

[0078] In some embodiments, the low voltage switchgear testing method can be implemented as a computer program tangibly embodied in a computer readable storage medium, e.g., storage unit 18. In some embodiments, parts or all of the computer program can be loaded and / or installed onto electronic device 10 via, e.g., ROM 12 and / or communication unit 19. When the computer program is loaded onto RAM 13 and executed by processor 11, one or more of the steps of the low voltage switchgear testing method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the low voltage switchgear testing method by other means, e.g., with the aid of firmware.

[0079] Various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a complex programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0080] Computer programs used to implement the methods of the application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the computer program, when executed by the processor, implements the functions / acts specified in the flowcharts and / or block diagrams. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as part of a standalone software package, partially on a machine and partially on a remote machine or entirely on a remote machine or server.

[0081] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer-readable storage medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of a machine-readable storage medium will include one or more lines of a program of instructions in a transitory signal, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0082] To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0083] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0084] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service.

[0085] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, each step described in the present application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0086] The above detailed description does not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A low voltage switchgear testing device, characterized in that, The low-voltage switch cabinet test device comprises: a power module, a three-phase inverter, a first circuit breaker, a second circuit breaker, a first three-phase four-wire terminal, a second three-phase four-wire terminal, at least two contactors, at least two on-off control switches, and at least two third three-phase four-wire terminals; the power module is connected with the three-phase inverter, one end of the three-phase inverter is connected with the first circuit breaker, the other end of the first circuit breaker is connected with the first three-phase four-wire terminal, one end of the second circuit breaker is connected with the second three-phase four-wire terminal, the at least two on-off control switches are respectively connected with the at least two contactors, the other end of the second circuit breaker is connected with the at least two contactors, and the at least two contactors are respectively connected with the at least two third three-phase four-wire terminals in one-to-one correspondence; the power module is used for providing power supply for each module, the three-phase inverter is used for converting direct current into three-phase four-wire power supply, and the on-off control switch is used for controlling conduction or disconnection of the contactor; the second three-phase four-wire terminal is connected with the first three-phase four-wire terminal, or the second three-phase four-wire terminal is connected with an external three-phase power supply.

2. The apparatus of claim 1, wherein, The low-voltage switch cabinet test device further comprises a three-phase protection module and a three-phase parameter display module; the three-phase protection module is connected with the three-phase inverter, the three-phase protection module is used for monitoring three-phase four-wire power supply output, the three-phase parameter display module is connected with the second circuit breaker, and the three-phase parameter display module is used for displaying three-phase data.

3. The apparatus of claim 1, wherein, The on-off control switch is a remote control switch, and the closing and opening of the on-off control switch are interlocked.

4. A low voltage switchgear testing method characterized by, The low-voltage switch cabinet test method comprises the low-voltage switch cabinet test device according to any one of claims 1 to 3. The second three-phase four-wire terminal is connected, and the low-voltage switch cabinet test device is started; after the at least two third three-phase four-wire terminals connected with the at least two contactors are connected with the low-voltage switch cabinet to be tested, the at least two contactors are respectively transmitted with the at least two on-off control switches corresponding to the at least two contactors to transmit on-off operation instructions; the low-voltage switch cabinet test is performed, and voltage and current data of a three-phase power supply output bus in a test process are acquired; the second three-phase four-wire terminal is connected with the first three-phase four-wire terminal, and the low-voltage switch cabinet test device is started; or the second three-phase four-wire terminal is connected with an external three-phase power supply, and the low-voltage switch cabinet test device is started. The at least two third three-phase four-wire terminals connected with the at least two contactors are connected with the low-voltage switch cabinet to be tested; 5. The method of claim 4, wherein, the at least two contactors are respectively operated with the at least two on-off control switches corresponding to the at least two contactors, and the at least two contactors are respectively operated with the at least two on-off control switches corresponding to the at least two contactors, including the first circuit breaker is closed, so that the three-phase four-wire power supply supplies power to the low-voltage switch cabinet, and the at least two contactors are respectively operated with the at least two on-off control switches corresponding to the at least two contactors; or an external three-phase power supply supplies power to the low-voltage switch cabinet, and the at least two contactors are respectively operated with the at least two on-off control switches corresponding to the at least two contactors. the low-voltage switch cabinet test is performed, and voltage and current data of a three-phase power supply output bus in a test process are acquired, including ​ 6. The method of claim 5, wherein, ​ The low-voltage switch cabinet test is performed, and the three-phase inverter output bus voltage and current data are obtained by using a three-phase protection module; or The low-voltage switch cabinet test is performed, and the current and voltage data of the bus after the second three-phase four-wire connection end are obtained by using a three-phase parameter display module.

7. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected to the at least one processor in communication; wherein The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the low-voltage switch cabinet test method of any one of claims 4-6.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for causing the processor to execute when the low-voltage switch cabinet test method of any one of claims 4-6 is implemented.

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