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

Abstract

The invention discloses a low-voltage switch cabinet testing device and method, electronic equipment and a storage medium. The device comprises a power supply 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 opening and closing control switches and at least two three-phase four-wire terminals, the at least two opening and closing control switches are correspondingly connected with the at least two contactors respectively, and the at least two contactors are connected with the second circuit breaker respectively; the at least two contactors are connected with the at least two three-phase four-wire terminals in a one-to-one correspondence manner. The power supply module supplies power to each module; the three-phase inverter converts the direct current into a three-phase four-wire power supply; and the on-off control switch controls the on or off of the contactor. According to the technical scheme, two power supply modes are provided, different environments and site requirements can be met, the safety risk is reduced, and the operation efficiency is improved.

Description

Technical Field

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

[0002] Low-voltage switchgear is widely used in distribution networks, and compared with other equipment, low-voltage switchgear is closely related to the user side. The failure rate of low-voltage switchgear increases with the years of operation. Once a failure occurs, it often has a great impact on residents' lives, industrial production and social stability. Therefore, the operation and maintenance of low-voltage switchgear is very important. At the same time, with the rapid increase in residential electricity consumption and industrial production electricity consumption, the investment in the construction and transformation of low-voltage areas of distribution networks has continued to increase, and more and more low-voltage switchgears have been put into operation. Before commissioning, the switch 3-in-3 and 3-in-2 tests need to be carried out.

[0003] In the past, during the operation and maintenance of low-voltage switchgear or pre-commissioning tests, operators had to connect two output power supplies on the generator output switch side when performing functional tests on the low-voltage switchgear. When switching the output power, the wiring terminals had to be frequently released, making the power switching operation complicated. There was no obvious disconnection point at the power output port, resulting in insufficient safety. The generator was large in size and inconvenient to carry, resulting in low efficiency in the operation and maintenance and testing of the low-voltage switchgear, high manpower consumption, and safety that needed to be improved. Summary of the invention

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

[0005] According to one aspect of the present invention, there is provided a low-voltage switch cabinet test device, 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 opening and closing control switches, and at least two three-phase four-wire terminals;

[0006] The power module is connected to the three-phase inverter, the three-phase inverter is connected to the first circuit breaker, the first circuit breaker is connected to the first three-phase four-wire terminal, the second circuit breaker is connected to the second three-phase four-wire terminal, the at least two opening and closing control switches are respectively connected to the at least two contactors, and the at least two contactors are respectively connected to the second circuit breakers; the at least two contactors are also connected to 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 a three-phase four-wire power supply; the separation and closing control switch is used to control the conduction or disconnection of the contactor.

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

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

[0010] Optionally, it also includes a three-phase protection module and a three-phase parameter display module;

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

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

[0013] According to another aspect of the present invention, a low-voltage switch cabinet testing method is provided, using the low-voltage switch cabinet testing device described in any one of the above embodiments, and the low-voltage switch cabinet testing method includes:

[0014] Connect the second three-phase four-wire terminal and turn on the low-voltage switchgear test device;

[0015] After at least two three-phase four-wire terminals connected to at least two contactors are connected to the low-voltage switch cabinet to be tested, the at least two contactors are respectively transmitted with corresponding at least two opening and closing control switches to open and close operation instructions;

[0016] Conduct low-voltage switchgear testing and obtain voltage and current data of the three-phase power output busbar during the testing process.

[0017] Optionally, the second three-phase four-wire terminal is wired and the low-voltage switch cabinet test device is turned on, including:

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

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

[0020] Optionally, at least two three-phase four-wire terminals connected to at least two contactors are connected to a low-voltage switch cabinet to be tested; and at least two contactors respectively use corresponding at least two opening and closing control switches to perform opening and closing operations, including:

[0021] The first circuit breaker is closed so that the three-phase power supply supplies power to the low-voltage switch cabinet, and at least two contactors are opened and closed using corresponding at least two opening and closing control switches; or,

[0022] The external three-phase power supply supplies power to the low-voltage switch cabinet, and at least two contactors respectively use corresponding at least two opening and closing control switches to perform opening and closing operations.

[0023] Optionally, perform a low-voltage switchgear test to obtain voltage and current data of the three-phase power output busbar during the test, including:

[0024] Conduct low-voltage switchgear testing and use the three-phase protection module to obtain voltage and current data of the three-phase power output bus inside the test device; or,

[0025] Conduct low-voltage switchgear testing and use the three-phase parameter display module to obtain the current and voltage data of the external three-phase power output bus during the test process.

[0026] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0027] at least one processor; and

[0028] a memory communicatively connected to the at least one processor; 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 so that the at least one processor can execute the low-voltage switchgear testing method described in any embodiment of the present invention.

[0030] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the low-voltage switchgear testing method described in any embodiment of the present invention when executed.

[0031] The technical solution of the embodiment of the present invention provides two power supply modes by setting 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 separation and combination control switches, and at least two three-phase four-wire terminals. The second three-phase four-wire terminal can be connected to the first three-phase four-wire terminal or to an external three-phase power supply, and can be used in different environments and on-site requirements. The circuit breaker can control the connection or disconnection of the power supply, reducing the safety risk; the separation and combination control switch can control the conduction or disconnection of the contactor, thereby controlling the opening or closing of the low-voltage switch cabinet test. Each contactor uses a separation and combination button for separation and combination operation, which ensures the reliable control of the contactor, and does not need to frequently release the terminal, thereby improving the operating efficiency. The technical solution of the embodiment of the present invention provides two power supply modes, which can be used in different environments and on-site requirements, reducing the safety risk and improving the operating efficiency.

[0032] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0035] Figure 2 is an exploded diagram of a low-voltage switch cabinet testing device provided according to an embodiment of the present invention;

[0036] Figure 3 is a flow chart of a low-voltage switchgear testing method provided according to an embodiment of the present invention;

[0037] Figure 4 It is a structural schematic diagram of an electronic device for implementing a low-voltage switch cabinet testing method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] Figure 1 The present invention provides a schematic diagram of the structure of a low-voltage switch cabinet test device. This embodiment can be applied to pre-delivery inspection, preventive testing, insulation performance testing, and daily maintenance and repair of high and low voltage switch cabinets in 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. Figure 1 As shown, 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 separation and closing control switches 108 and at least two three-phase four-wire terminals 109;

[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, at least two opening and closing control switches 108 are respectively connected to at least two contactors 107, at least two contactors 107 are respectively connected to the second circuit breaker 106; at least two contactors 107 are also connected to at least two three-phase four-wire terminals 109 in a one-to-one correspondence;

[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 a three-phase four-wire power supply; the on / off control switch 108 is used to control the on / off 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] Among them, the power module 101 can use a lithium battery, and the three-phase inverter 102 converts direct current into a three-phase four-wire power supply to provide power for the device. The three-phase four-wire terminal can be connected to the test line, and at least two three-phase four-wire terminals 109 corresponding to at least two contactors 107 can be connected to the power port of the low-voltage switch cabinet, and the separation 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, when the second three-phase four-wire terminal 105 can be connected to the first three-phase four-wire terminal 104, the power module 101 in the device is powered by the three-phase four-wire power output by the three-phase inverter 102, and the first circuit breaker 103 can control the access or connection of the power module 101; when the second three-phase four-wire terminal 105 can also be connected to an external three-phase power supply, it is powered by the external three-phase power supply, and the second circuit breaker 106 can be connected to or connected to the external three-phase power supply.

[0044] The technical solution of the embodiment of the present invention provides two power supply modes by setting 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 separation and combination control switches, and at least two three-phase four-wire terminals. The second three-phase four-wire terminal can be connected to the first three-phase four-wire terminal or to an external three-phase power supply, and can be used in different environments and on-site requirements. The circuit breaker can control the connection or disconnection of the power supply, reducing the safety risk; the separation and combination control switch can control the conduction or disconnection of the contactor, thereby controlling the opening or closing of the low-voltage switch cabinet test. Each contactor uses a separation and combination button for separation and combination operation, which ensures the reliable control of the contactor, and does not need to frequently release the terminal, thereby improving the operating efficiency. The technical solution of the embodiment of the present invention provides two power supply modes, which can be used in different environments and on-site requirements, reducing the safety risk and improving the operating efficiency.

[0045] Continue to refer Figure 1 In some optional embodiments of the present invention, the second three-phase four-wire terminal 105 is connected to the first three-phase four-wire terminal 104; or,

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

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

[0048] Continue to refer Figure 1 , in some optional embodiments of the present invention, it also includes a three-phase protection module 1010 and a three-phase parameter display module 1011;

[0049] The three-phase protection module 1010 is connected to the three-phase inverter 102; the three-phase protection module 1010 is used to monitor the three-phase power output; the three-phase parameter display module 1011 is connected to the second circuit breaker 106; the three-phase parameter display module 1011 is used to display three-phase data.

[0050] Among them, the three-phase protection module 1010 will detect the voltage and current of the output bus of the three-phase inverter 102, and implement the protection function according to the parameters to avoid serious three-phase imbalance, short circuit, overload, overheating, overcurrent, overvoltage and other situations, and ensure the safe operation of the equipment under test and the reliability of the test results. The three-phase parameter display module 1011 monitors the data of the bus after the second three-phase four-wire terminal 105, and displays the current current and voltage data in real time to ensure the safe operation of the equipment under test.

[0051] Continue to refer Figure 1 In some optional embodiments of the present invention, the separation control switch 108 is a remote control switch, and the closing and opening of the separation control switch 108 are interlocked.

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

[0053] Figure 2 1 is an exploded view of a low-voltage switch cabinet test device provided according to an embodiment of the present invention. Figure 2 As shown, the low-voltage switch cabinet testing device also includes a casing back panel 1012, a casing bottom panel 1019, a casing side panel 1017 and a casing front panel with a handle 1018, an input socket 1013, a three-phase voltmeter 1014, a grounding interface 1015, and a power switch 1016.

[0054] Figure 3 is a flow chart of a low-voltage switch cabinet testing method provided according to an embodiment of the present invention, using the low-voltage switch cabinet testing device described in any one of the above embodiments, referring to Figure 1 and Figure 3 , low voltage switchgear test methods include:

[0055] S201, connect the second three-phase four-wire terminal 105 and start the low-voltage switch cabinet test device.

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

[0057] S202 , after at least two three-phase four-wire terminals 109 connected to at least two contactors 107 are connected to the low-voltage switch cabinet to be tested, use the corresponding at least two opening and closing control switches 108 to transmit opening and closing operation instructions to the at least two contactors 107 .

[0058] Among them, continue to refer to Figure 1 At least two three-phase four-wire terminals 109 connected to at least two contactors 107 are connected to the power port of the low-voltage switch cabinet to be tested. After the connection, at least two separation and closing control switches 108 send separation and closing operation instructions to the corresponding at least two contactors 107 to control the connection or disconnection of the circuit.

[0059] S203, perform a low-voltage switch cabinet test to obtain voltage and current data of the three-phase power output busbar during the test.

[0060] Among them, continue to refer to Figure 1 At least two opening and closing control switches 108 send opening and closing operation instructions, and after the control circuit is turned on, the low-voltage switch cabinet test is carried out. During the test, the current and voltage of the output bus after the three-phase power supply 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 to avoid serious three-phase imbalance, short circuit, overload, overheating, overcurrent, overvoltage and other situations, so as to ensure the safe operation of the equipment under test and the reliability of the test results.

[0061] The technical solution of the embodiment of the present invention is to start the low-voltage switch cabinet test device by wiring the second three-phase four-wire terminal. The second three-phase four-wire terminal can be connected to the first three-phase four-wire terminal or to an external three-phase power supply. Different wiring methods are selected according to different environments and on-site requirements. After the wiring is completed, the low-voltage switch cabinet test device is turned on. After the low-voltage switch cabinet to be tested is connected, at least two separation and closing control switches send separation and closing operation instructions to the corresponding at least two contactors to control the connection of the circuit, thereby testing the low-voltage switch cabinet. Each contactor uses a separation and closing button to perform separation and closing operations, which ensures reliable control of the contactor and does not need to frequently release the terminal, thereby improving operating efficiency.

[0062] In some optional embodiments of the present invention, continue to refer to Figure 1 , connect the second three-phase four-wire terminal 105, and start the low-voltage switch cabinet test device, including:

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

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

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

[0066] In some optional embodiments of the present invention, continue to refer to Figure 1, at least two three-phase four-wire terminals 109 connected to 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 opening and closing control switches 108 to perform opening and closing operations, including:

[0067] The first circuit breaker 103 is closed so that the three-phase power supply supplies power to the low-voltage switch cabinet, and at least two contactors 107 are respectively opened and closed using corresponding at least two opening and closing control switches 108; 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 opening and closing control switches 108 to perform opening and closing operations.

[0069] Among them, after the second three-phase four-wire terminal 105 is connected to the first three-phase four-wire terminal 104, the first circuit breaker 103 is closed, and the low-voltage switch cabinet can be powered by the three-phase power converted by the three-phase inverter 102 through the internal power module 101 of the device; after the second three-phase four-wire terminal 105 is connected to the external three-phase power supply, the external three-phase power supply supplies power to the low-voltage switch cabinet. At least two contactors 107 use the corresponding at least two opening and closing control switches 108 to perform opening and closing operations, and after the control circuit is connected, the low-voltage switch cabinet is tested;

[0070] In some optional embodiments of the present invention, continue to refer to Figure 1 , conduct low-voltage switchgear testing and obtain voltage and current data of the three-phase power output busbar during the test, including:

[0071] Perform low-voltage switch cabinet testing, and use the three-phase protection module 1010 to obtain voltage and current data of the three-phase power output bus inside the test process device; or,

[0072] The low-voltage switch cabinet is tested, and the current and voltage data of the external three-phase power output bus are obtained by using the three-phase parameter display module 1011 during the test process.

[0073] Among them, after the second three-phase four-wire terminal 105 is connected to 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 converted by the three-phase inverter 102 through the internal power module 101 of the device, and the low-voltage switch cabinet is tested. The three-phase protection module 1010 can be used to obtain the voltage and current data of the three-phase power output bus inside the test process of the device; after the second three-phase four-wire terminal 105 is connected to the external three-phase power supply, the external three-phase power supply is used to power the low-voltage switch cabinet, and the low-voltage switch cabinet is tested. The three-phase parameter display module 1011 is used to obtain the current and voltage data of the external three-phase power output bus during the test process.

[0074] Figure 4A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment 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 processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

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

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

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

[0078] In some embodiments, the low-voltage switchgear test method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the low-voltage switchgear test method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the low-voltage switchgear test method in any other appropriate manner (e.g., by means of firmware).

[0079] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0080] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0081] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0082] To provide interaction with a user, the systems and techniques described herein may 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 trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0083] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may 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] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may 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 difficult management and weak business scalability in traditional physical hosts and VPS services.

[0085] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0086] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A low voltage switch cabinet testing device, characterized in that: include: 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 opening and closing control switches, and at least two three-phase four-wire terminals; The power module is connected to the three-phase inverter, the three-phase inverter is connected to the first circuit breaker, the first circuit breaker is connected to the first three-phase four-wire terminal, the second circuit breaker is connected to the second three-phase four-wire terminal, the at least two opening and closing control switches are respectively connected to the at least two contactors, and the at least two contactors are respectively connected to the second circuit breakers; the at least two contactors are also connected to the at least two three-phase four-wire terminals one by one; The power module is used to provide power for each module; the three-phase inverter is used to convert direct current into a three-phase four-wire power supply; the separation and closing control switch is used to control the conduction or disconnection of the contactor.

2. The device according to claim 1, characterized in that The second three-phase four-wire terminal is connected to the first three-phase four-wire terminal; or, The second three-phase four-wire terminal is connected to an external three-phase power supply.

3. The device according to claim 1, characterized in that It also includes a three-phase protection module and a three-phase parameter display module; The three-phase protection module is connected to the three-phase inverter; the three-phase protection module is used to monitor the three-phase power output; the three-phase parameter display module is connected to the second circuit breaker; the three-phase parameter display module is used to display three-phase data.

4. The device according to claim 1, characterized in that The on-off control switch is a remote control switch, and the closing and opening of the on-off control switch are interlocked.

5. A low voltage switch cabinet testing method, characterized in that: Using the low-voltage switch cabinet testing device according to any one of claims 1 to 4, the low-voltage switch cabinet testing method comprises: Connect the second three-phase four-wire terminal and turn on the low-voltage switchgear test device; After at least two three-phase four-wire terminals connected to at least two contactors are connected to the low-voltage switch cabinet to be tested, the at least two contactors are respectively transmitted with corresponding at least two opening and closing control switches to open and close operation instructions; Conduct low-voltage switchgear testing and obtain voltage and current data of the three-phase power output busbar during the testing process.

6. The method according to claim 5, characterized in that Connect the second three-phase four-wire terminal and start the low-voltage switchgear test device, including: The second three-phase four-wire terminal is connected to the first three-phase four-wire terminal, and the low-voltage switch cabinet test device is turned on; or, The second three-phase four-wire terminal is connected to an external three-phase power supply, and the low-voltage switch cabinet test device is turned on.

7. The method according to claim 6, characterized in that At least two three-phase four-wire terminals connected to at least two contactors are connected to the low-voltage switch cabinet to be tested; At least two contactors use corresponding at least two opening and closing control switches to perform opening and closing operations, including: The first circuit breaker is closed so that the three-phase power supply supplies power to the low-voltage switch cabinet, and at least two contactors are respectively opened and closed using corresponding at least two opening and closing control switches; or, The external three-phase power supply supplies power to the low-voltage switch cabinet, and at least two contactors respectively use corresponding at least two opening and closing control switches to perform opening and closing operations.

8. The method according to claim 7, characterized in that Conduct low-voltage switchgear testing and obtain voltage and current data of the three-phase power output busbar during the test, including: Conduct low-voltage switchgear testing and use the three-phase protection module to obtain voltage and current data of the three-phase power output bus inside the test device; or, Conduct low-voltage switchgear testing and use the three-phase parameter display module to obtain the current and voltage data of the external three-phase power output bus during the test process.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; 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 so that the at least one processor can execute the low-voltage switchgear testing method according to any one of claims 5 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the low-voltage switchgear testing method according to any one of claims 5 to 8 when executed.

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