Testing method, system and equipment for network-forming converter valve with super capacity and medium

Abstract

The invention provides a testing method, system, equipment and medium for a network-building type converter valve with a super capacitor, and relates to the field of flexible power transmission application, and the method comprises the steps: connecting the network-building type converter valve with the super capacitor into valve control testing equipment; the network-forming converter valve comprises a plurality of super-capacity modules to be tested; a direct-current power supply supplies power to the direct-current sides of the multiple to-be-tested super-capacitance modules, and protection enabling is carried out on the multiple to-be-tested super-capacitance modules; based on the to-be-tested switch types of the plurality of to-be-tested super-capacitance modules, sending test commands corresponding to the to-be-tested switch types to the plurality of to-be-tested super-capacitance modules through the valve control test equipment, and obtaining test results returned by the to-be-tested switches for the test commands; and according to a test result, obtaining an operation state of the network-constructing converter valve with the super-capacity. The invention discloses a specific process for testing the network-structured converter valve with the super-capacity, the comprehensive test of a plurality of to-be-tested super-capacity modules in the network-structured converter valve is completed at one time, a comprehensive and efficient detection method is provided for the network-structured converter valve with the super-capacity, and the field maintenance efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible power transmission applications, and particularly to a test method, system, device, and medium for a network-forming converter valve with supercapacitors. Background Art

[0002] Under the background of "dual carbon", the rapid development of new energy and its high proportion penetration in the power system have brought severe challenges to the power balance and transient stability of traditional AC power grids. The demand for using electrochemical energy storage to ensure the safe and stable operation of new power systems is becoming increasingly urgent. Traditional electrochemical energy storage adopts a grid-following control technology, with low inertia, limited frequency and voltage support capabilities, insufficient transient stability support for power systems, and it is difficult to support the safe and stable operation of weak power grids with high proportions of new energy access. The network-forming technology can simulate the dynamic characteristics and synchronization mechanism of traditional synchronous motors, has a strong overload capacity, can provide inertia support to the power grid, has the ability to dynamically support active / reactive power during fault processes, can establish grid voltage in scenarios without traditional synchronous machines, and can also operate stably in weak power grids. By adopting the same modular multilevel topology as flexible DC transmission converter valves in network-forming products and centrally configuring supercapacitors on the DC bus side, the voltage and frequency of the system can be "actively" stabilized under various working conditions. At the moment when a system fault occurs, by releasing the energy stored in the supercapacitors, active inertia and reactive power support are provided naturally without delay. In the pre-, mid-, and post-disturbance stages, a voltage source necessary for the stable operation of the power system is constructed, playing the role of a "pillar" for grid stability and effectively improving the transient voltage support capacity and system stability of the power grid. Adopting a modular multilevel converter + supercapacitor topology structure belongs to the latest cutting-edge technology in the field of network-forming equipment. The supercapacitors and high-altitude IGBT (Insulated Gate Bipolar Transistor) components used inside the modules are cutting-edge technology equipment in the power industry.

[0003] Currently, the existing technology is in a technical blank in the way of testing network-forming converter valve equipment. Due to the lack of relevant technologies, it is impossible to comprehensively test multiple supercapacitor modules to be tested in network-forming converter valve equipment, which affects the on-site maintenance efficiency. Summary of the Invention

[0004] To overcome the above-mentioned deficiencies of the prior art, the present invention provides a test method for a network-forming converter valve with supercapacitors, including:

[0005] Connect a network-forming converter valve with supercapacitors to valve control test equipment and set the test parameters of the valve control test equipment; the network-forming converter valve with supercapacitors includes multiple supercapacitor modules to be tested;

[0006] Power the DC sides of multiple supercapacitor modules to be tested through a DC power supply, and enable protection for the multiple supercapacitor modules to be tested;

[0007] Based on the types of switches to be tested of the multiple supercapacitor modules to be tested, send test commands corresponding to the types of switches to be tested to the multiple supercapacitor modules through a valve control test device, and obtain the test results returned by the switches to be tested for the test commands;

[0008] Obtain the operating status of the network-forming converter valve with supercapacitors according to the test results.

[0009] Preferably, the supercapacitor module to be tested includes an insulated gate bipolar transistor (IGBT) switch component group, a shunt switch, a bypass switch, a supercapacitor, and a supercapacitor cluster; among them, the IGBT switch component group, the shunt switch, and the supercapacitor cluster form a series circuit, the bypass switch is connected in parallel with one of the IGBT switch components in the IGBT switch component group, and the supercapacitor is connected in parallel across the IGBT switch component group;

[0010] The types of switches to be tested include: the IGBT switch component group, the bypass switch, and the shunt switch; the IGBT switch component group includes multiple series-connected and / or parallel-connected IGBT switch components.

[0011] Preferably, if the type of switch to be tested includes the IGBT switch component group, set the test parameters of the valve control test device, including: setting the unlocking switch frequency and unlocking switch duty ratio in the test parameters of the IGBT switch component group; and setting the unlocking enable in the test parameters;

[0012] Based on the types of switches to be tested of the multiple supercapacitor modules to be tested, send test commands corresponding to the types of switches to be tested to the multiple supercapacitor modules through a valve control test device, and obtain the test results returned by the switches to be tested for the test commands, including:

[0013] When the unlocking enable is set to a valid value, trigger each IGBT switch component group based on the unlocking switch frequency, unlocking switch duty ratio, and the valid value of the unlocking enable;

[0014] Obtain the waveforms of the AC output ports of each supercapacitor module to be tested respectively, and determine the turn-on test results of each IGBT switch component group according to the waveforms of the AC output ports.

[0015] Preferably, after determining the turn-on test results of each IGBT switch component group according to the waveforms of the AC output ports, the method further includes:

[0016] When the unlocking enable is set to an invalid value, perform stop triggering on each IGBT switch component group, and the waveforms of the AC output ports of each supercapacitor module to be tested disappear after the stop triggering;

[0017] Determine the information that the waveform of the AC output port disappears as the turn-off test result of each IGBT switch component group.

[0018] Preferably, if the switch type to be tested includes a bypass switch, set the test parameters of the valve control test equipment, including: setting the manual bypass action command in the test parameters of the bypass switch to a valid value;

[0019] Based on the switch types to be tested of multiple supercapacitor modules to be tested, send test commands corresponding to the switch types to be tested to the multiple supercapacitor modules to be tested through the valve control test equipment, and obtain the test results returned by the switches to be tested for the test commands, including:

[0020] Send the manual bypass action command to each supercapacitor module to be tested;

[0021] Each supercapacitor module to be tested controls the bypass switch to perform a closing action, and each supercapacitor module to be tested is in a bypass state. Determine each bypass state as the turn-on test result of each bypass switch.

[0022] Preferably, after determining each bypass state as the turn-on test result of each bypass switch, the method further includes: setting the clear sub-module bypass flag command in the test parameters of the bypass switch to a valid value;

[0023] Open the bypass switch, clear the bypass position, and determine the cleared bypass position as the turn-off test result of each bypass switch.

[0024] Preferably, if the switch type to be tested includes a shunt trip switch, set the test parameters of the valve control test equipment, including: setting the shunt trip switch disconnection command for the supercapacitor cluster circuit breaker in the shunt trip switch maintenance parameters;

[0025] Based on the switch types to be tested of multiple supercapacitor modules to be tested, send test commands corresponding to the switch types to be tested to the multiple supercapacitor modules to be tested through the valve control test equipment, and obtain the test results returned by the switches to be tested for the test commands, including:

[0026] When the shunt trip switch disconnection command for the supercapacitor cluster circuit breaker is set to a valid value, send a shunt trip switch disconnection command to the supercapacitor cluster to place the shunt trip switch in the off position;

[0027] Determine the information that the shunt trip switch is in the off position as the turn-off test result of the shunt trip switch.

[0028] Preferably, after determining the information that the shunt trip switch is in the off position as the turn-off test result of the shunt trip switch, the method further includes:

[0029] When the shunt trip switch disconnection command for the supercapacitor cluster circuit breaker is set to an invalid value, send a shunt trip switch closing command to the supercapacitor cluster to place the shunt trip switch in the on position;

[0030] Determine the information that the shunt switch is in the closed position as the on - test result of the shunt switch.

[0031] Preferably, the ultracapacitor module to be tested communicates with the valve control test equipment through optical fiber for receiving and transmitting.

[0032] Based on the same inventive concept, the present invention also provides a test system for a network - forming converter valve with ultracapacitors, and the system includes:

[0033] An access setting module, configured to connect the network - forming converter valve with ultracapacitors to a valve control test equipment, and set the test parameters of the valve control test equipment; the network - forming converter valve with ultracapacitors includes a plurality of ultracapacitor modules to be tested;

[0034] A DC - side power supply module, configured to supply power to the DC sides of the plurality of ultracapacitor modules to be tested through a DC power source, and perform protection enabling on the plurality of ultracapacitor modules to be tested;

[0035] A to - be - tested switch test module, configured to send a test command corresponding to the to - be - tested switch type to the plurality of ultracapacitor modules to be tested through the valve control test equipment based on the to - be - tested switch types of the plurality of ultracapacitor modules, and obtain the test result returned by the to - be - tested switch for the test command;

[0036] An operating condition obtaining module, configured to obtain the operating condition of the network - forming converter valve with ultracapacitors according to the test result.

[0037] Preferably, the ultracapacitor module to be tested includes an insulated gate bipolar transistor (IGBT) switch component group, a shunt switch, a bypass switch, a supercapacitor, and an ultracapacitor cluster; wherein, the IGBT switch component group, the shunt switch, and the ultracapacitor cluster form a series circuit, the bypass switch is connected in parallel with one of the IGBT switch components in the IGBT switch component group, and the supercapacitor is connected in parallel with the IGBT switch component group;

[0038] The to - be - tested switch types include: the IGBT switch component group, the bypass switch, and the shunt switch; the IGBT switch component group includes a plurality of series - connected and / or parallel - connected IGBT switch components.

[0039] Preferably, if the to - be - tested switch type includes the IGBT switch component group, the access setting module is specifically configured to: set the unlocking switch frequency and the unlocking switch duty ratio in the test parameters of the IGBT switch component group; and set the unlocking enabling in the test parameters;

[0040] The to - be - tested switch test module is specifically configured to:

[0041] When the unlocking enable is set to a valid value, each IGBT switch component group is triggered based on the unlocking switch frequency, the unlocking switch duty cycle, and the valid value of the unlocking enable.

[0042] The AC output port waveforms of each supercapacitor module to be tested are obtained respectively, and the turn-on test results of each IGBT switch component group are determined according to the AC output port waveforms.

[0043] Preferably, the switch to be tested test module is further configured to:

[0044] When the unlocking enable is set to an invalid value, stop triggering each IGBT switch component group, and after the stop triggering, the AC output port waveforms of each supercapacitor module to be tested disappear.

[0045] The information that the AC output port waveforms disappear is determined as the turn-off test results of each IGBT switch component group.

[0046] Preferably, if the switch type to be tested includes a bypass switch, the access setting module is specifically configured to: set the manual bypass action command in the test parameters of the bypass switch to a valid value;

[0047] The switch to be tested test module is specifically configured to:

[0048] Send the manual bypass action command to each supercapacitor module to be tested;

[0049] Each supercapacitor module to be tested controls the bypass switch to perform a closing action, and each supercapacitor module to be tested is in a bypass state, and each bypass state is determined as the turn-on test results of each bypass switch.

[0050] Preferably, the switch to be tested test module is further configured to:

[0051] Set the clear sub-module bypass flag command in the test parameters of the bypass switch to a valid value;

[0052] Open the bypass switch, clear the bypass position, and determine the cleared bypass position as the turn-off test results of each bypass switch.

[0053] Preferably, if the switch type to be tested includes a shunt trip switch, the access setting module is specifically configured to: set the supercapacitor cluster circuit breaker opening command in the shunt trip switch maintenance parameters;

[0054] The switch to be tested test module is specifically configured to:

[0055] When the supercapacitor cluster circuit breaker opening command is set to a valid value, send a shunt trip switch opening command to the supercapacitor cluster to place the shunt trip switch in the off position;

[0056] The information that the shunt trip switch is in the off position is determined as the turn-off test results of the shunt trip switch.

[0057] Preferably, the switch to be tested testing module is further configured to:

[0058] When the opening command of the ultra-capacitor cluster circuit breaker is set to an invalid value, send a closing command for the shunt trip switch to the ultra-capacitor cluster to place the shunt trip switch in the closed position;

[0059] Determine the information that the shunt trip switch is in the closed position as the opening test result of the shunt trip switch.

[0060] Preferably, the ultra-capacitor module to be tested communicates with the valve control test equipment through optical fiber for receiving and transmitting.

[0061] Based on the same inventive concept, the present invention further provides an electronic device, including: at least one processor and a memory; the memory and the processor are connected through a bus;

[0062] The memory is used to store one or more programs;

[0063] When the one or more programs are executed by the at least one processor, the testing method of a network-forming converter valve with ultra-capacitors as described above is implemented.

[0064] Based on the same inventive concept, the present invention further provides a readable storage medium, on which an execution program is stored, and when the execution program is executed, the testing method of a network-forming converter valve with ultra-capacitors as described above is implemented.

[0065] Compared with the closest prior art, the beneficial effects of the present invention are as follows:

[0066] The present invention provides a testing method for a network-forming converter valve with ultra-capacitors, including: connecting the network-forming converter valve with ultra-capacitors to a valve control test equipment and setting the test parameters of the valve control test equipment; the network-forming converter valve with ultra-capacitors includes a plurality of ultra-capacitor modules to be tested; supplying power to the DC sides of the plurality of ultra-capacitor modules to be tested through a DC power supply and enabling protection for the plurality of ultra-capacitor modules to be tested; based on the types of switches to be tested of the plurality of ultra-capacitor modules to be tested, sending test commands corresponding to the types of switches to be tested to the plurality of ultra-capacitor modules to be tested through the valve control test equipment, and obtaining the test results returned by the switches to be tested for the test commands; according to the test results, obtaining the operating conditions of the network-forming converter valve with ultra-capacitors. The present invention discloses the specific process of testing the network-forming converter valve with ultra-capacitors, and completes the comprehensive testing of a plurality of ultra-capacitor sub-modules to be tested in the ultra-capacitor maintenance module to be tested at one time, provides a comprehensive and efficient detection method for the ultra-capacitor modules to be tested, and improves the on-site maintenance efficiency. Description of the Drawings

[0067] Figure 1 It is a schematic flow chart of the testing method for a network-forming converter valve with ultra-capacitors provided by the present invention;

[0068] Figure 2Schematic diagram of the overhaul system for the supercapacitor module to be tested based on the network-forming technology provided by the present invention;

[0069] Figure 3 Schematic diagram of the structure of the full H-bridge type sub-module provided by the present invention;

[0070] Figure 4 Schematic diagram of the structure of the half H-bridge type sub-module provided by the present invention;

[0071] Figure 5 Schematic diagram of the structure of the supercapacitor module to be tested based on the half H-bridge type structure provided by the present invention;

[0072] Figure 6 Schematic diagram of the test wiring principle of the network-forming type converter valve with supercapacitors provided by the present invention;

[0073] Figure 7 Structure diagram of a test system for a network-forming type converter valve with supercapacitors provided by the present invention;

[0074] Figure 8 Schematic diagram of the electronic device provided by the present invention. Detailed implementation manners

[0075] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0076] Embodiment 1:

[0077] The present invention provides a test method for a network-forming type converter valve with supercapacitors. Specifically, Figure 1 Schematic diagram of the flow of the test method for a network-forming type converter valve with supercapacitors provided by the embodiment of the present invention. As shown in the figure, the method includes the following steps:

[0078] S1: Connect the network-forming type converter valve with supercapacitors to the valve control test equipment and set the test parameters of the valve control test equipment; the network-forming type converter valve with supercapacitors includes a plurality of supercapacitor modules to be tested;

[0079] S2: Supply power to the DC sides of the plurality of supercapacitor modules to be tested through a DC power supply and enable the protection for the plurality of supercapacitor modules to be tested;

[0080] S3: Based on the types of switches to be tested of the plurality of supercapacitor modules to be tested, send test commands corresponding to the types of switches to be tested to the plurality of supercapacitor modules to be tested through the valve control test equipment, and obtain the test results returned by the switches to be tested for the test commands;

[0081] S4: Obtain the operating status of the network-forming type converter valve with supercapacitors according to the test results.

[0082] The present invention discloses a specific process for testing a network-forming type converter valve with supercapacitors. Through this specific process, the comprehensive testing of multiple supercapacitor sub-modules to be tested in the network-forming type converter valve can be completed at one time, providing a comprehensive and efficient detection method for the network-forming type converter valve with supercapacitors and improving the on-site maintenance efficiency. During the critical period of the transformation of the new power system, studying the testing method for network-forming type converter valve equipment plays a guiding role in the popularization and application of subsequent related technologies and provides an effective solution idea for solving relevant regional power grid problems.

[0083] The flexible DC transmission system is a multi-terminal DC transmission system based on voltage source converters. This system realizes the independent control of active and reactive power by controlling the output voltage and current of the converter, and has the advantages of fast response, high control accuracy, and good stability. The flexible DC transmission system mainly consists of parts such as converters, filters, transformers, and DC transmission lines. Its basic principle is to control the output voltage of the converter to match the system voltage, thereby realizing the stable operation of DC transmission. In the flexible DC transmission system, the application of modular multilevel converter technology is of great significance. By connecting multiple MMCs (Modular Multilevel Converters) in series or parallel, the efficient operation of the multi-terminal flexible DC transmission system can be realized. This transmission system can not only improve the stability and reliability of the power system, but also support the access of distributed energy, reduce network losses, and improve transmission efficiency.

[0084] The supercapacitor module to be tested in the present invention includes a modular multilevel converter MMC. The modular multilevel converter MMC is composed of cascading multiple sub-modules with the same structure (Sub-Module, SM). The structure of the sub-module can be divided into three types: half H-bridge type, full H-bridge type, and clamped double sub-module type.

[0085] In order to ensure that the supercapacitor module to be tested used in the network-forming equipment can work normally after being transported to the site for installation, it is necessary to conduct a low-voltage pressurization test on each supercapacitor module to be tested in the valve tower to ensure that each supercapacitor module to be tested works normally when put into operation.

[0086] Such as Figure 2As shown in the figure, it is a schematic diagram of the overhaul system for the supercapacitor module to be tested based on the grid-forming technology. In this overhaul system for the supercapacitor module to be tested, it consists of a valve control test device, a monitoring computer, a high-voltage DC power supply, an oscilloscope, and the supercapacitor module to be tested. Among them, the high-voltage DC power supply supplies power to the supercapacitor module to be tested, the oscilloscope displays the test results of the supercapacitor module to be tested, the monitoring computer is connected to the valve control test device through a network cable, and the valve control test device is connected and communicates with the supercapacitor module to be tested through a pair of optical fibers for receiving and transmitting. The test method for the grid-forming converter valve with supercapacitors provided by the present invention is applied between the valve control test device and the supercapacitor module to be tested.

[0087] In the present invention, the grid-forming converter valve with supercapacitors includes a plurality of supercapacitor modules to be tested. Each supercapacitor module to be tested includes an IGBT switch component group, a shunt switch, a bypass switch, a supercapacitor, and a supercapacitor cluster. Among them, the IGBT switch component group, the shunt switch, and the supercapacitor cluster form a series circuit, the bypass switch is connected in parallel to one of the IGBT switch components in the IGBT switch component group, and the supercapacitor is connected in parallel to both ends of the IGBT switch component group. The IGBT switch component group includes a plurality of series-connected and / or parallel-connected IGBT switch components. Among them, the IGBT switch component group is the modular multilevel converter MMC.

[0088] The plurality of series-connected and / or parallel-connected IGBT switch components can be half-bridge sub-modules or full-bridge sub-modules. As Figure 3 shown is a schematic diagram of the structure of the full H-bridge type sub-module in the present invention. Among them, T1, T2, T3, and T4 represent IGBT switch components, D1, D2, D3, and D4 represent corresponding diodes or transistors, C represents a capacitor, i SM represents the current value, U SM represents the voltage value. IGBT device 1 and device 2 are connected in series to form loop a, IGBT device 3 and device 4 are connected in series to form loop b, and loop a and loop b are connected in parallel to form an H-bridge sub-module.

[0089] As Figure 4 shown is a schematic diagram of the structure of the half H-bridge type sub-module in the present invention. Among them, VT1 and VT2 represent IGBT switch components, VD1 and VD2 represent corresponding diodes or transistors, Uc represents a capacitor, and IGBT device 1 and device 2 are connected in series to form the structure of the half H-bridge type.

[0090] In the present invention, for the convenience of description, the supercapacitor module to be tested including the half H-bridge type structure is used for illustration subsequently. It can be understood that the test method for the supercapacitor module to be tested with the full H-bridge type structure is also within the scope of protection claimed in the present invention. As Figure 5As shown, it is a schematic structural diagram of the supercapacitor module to be measured based on the half H-bridge structure provided by the present invention. In some specific embodiments, the supercapacitor module to be measured based on the half H-bridge structure can also be called a supercapacitor half-bridge sub-module. In Figure 5 it, the supercapacitor module to be measured includes an IGBT switch component group composed of two series-connected IGBT switch components. The IGBT switch component group, the shunt switch, and the supercapacitor cluster form a series circuit. The bypass switch is connected in parallel with one of the IGBT switch components in the IGBT switch component group, and the supercapacitor is connected in parallel at both ends of the IGBT switch component group.

[0091] As Figure 6 shown, it is a schematic diagram of the test wiring principle of the network-forming converter valve with supercapacitors provided by the present invention. According to Figure 6 the method of wiring, connect the network-forming converter valve with supercapacitors to the valve control test equipment. The output of the high-voltage DC power supply is connected to the busbars on both sides of the valve module (negative on the left and positive on the right: stand facing the head of the valve module, the left busbar of the valve module is connected to the negative pole of the DC power supply, and the right busbar is connected to the positive pole of the DC power supply). The input of the high-voltage probe is also connected to the busbars on both sides of the valve module (negative on the left and positive on the right), and the output of the high-voltage probe is connected to the oscilloscope.

[0092] After wiring, through the monitoring software installed on the monitoring computer, set the valve control test equipment to the test mode, set the starting module number and the ending module number of the test branch in the test parameter group, and determine the supercapacitor module to be measured according to the module number. After testing the supercapacitor module to be measured by the valve control test equipment, the switch to be measured of the supercapacitor module to be measured that fails the test can be repaired. Therefore, in some specific embodiments, for convenience, the test mode can also be called the repair mode.

[0093] During the valve tower test, without overall power-on, directly supply power to the DC sides of multiple supercapacitor modules to be measured through the DC power supply, and enable protection for multiple supercapacitor modules to be measured. Specifically, after setting through "test parameter - protection enable", start fault detection for the supercapacitor module to be measured. When the module can obtain power normally, it will report the available signal of the supercapacitor module to be measured.

[0094] After enabling protection, based on the types of switches to be measured of multiple supercapacitor modules to be measured, send test commands corresponding to the types of switches to be measured to multiple supercapacitor modules to be measured through the valve control test equipment, and obtain the test results returned by the switches to be measured for the test commands.

[0095] In the present invention, the types of switches to be measured include: IGBT switch component group, bypass switch, and shunt switch.

[0096] Based on the type of switch to be tested of multiple supercapacitor modules to be tested, send test commands corresponding to the type of switch to be tested to the multiple supercapacitor modules to be tested through a valve control test device, and obtain the test results returned by the switch to be tested for the test commands, including:

[0097] If the type of switch to be tested includes an IGBT switch component group, send an IGBT on-off test command to each IGBT switch component group through the valve control test device, and obtain the test results returned by each IGBT switch component group for the IGBT on-off test;

[0098] And / or, if the type of switch to be tested includes a bypass switch, send a bypass switch on-off test command to each bypass switch through the valve control test device, and obtain the test results returned by each bypass switch for the bypass switch on-off test;

[0099] And / or, if the type of switch to be tested includes a shunt trip switch, send a shunt trip switch on-off test command to each shunt trip switch through the valve control test device, and obtain the test results returned by each shunt trip switch for the shunt trip switch on-off test.

[0100] In some specific embodiments, the supercapacitor module to be tested can also be referred to as a sub-module, or as a supercapacitor sub-module. Only the names are different, but the actual meanings represented are the same.

[0101] If the type of switch to be tested includes an IGBT switch component group, set the test parameters of the valve control test device, including: setting the unlock switch frequency and unlock switch duty cycle in the test parameters of the IGBT switch component group; and setting the unlock enable in the test parameters;

[0102] Based on the type of switch to be tested of multiple supercapacitor modules to be tested, send test commands corresponding to the type of switch to be tested to the multiple supercapacitor modules to be tested through a valve control test device, and obtain the test results returned by the switch to be tested for the test commands, including:

[0103] When the unlock enable is set to a valid value, trigger each IGBT switch component group based on the unlock switch frequency, unlock switch duty cycle, and the valid value of the unlock enable;

[0104] Obtain the AC output port waveforms of each supercapacitor module to be tested respectively, and determine the on-test results of each IGBT switch component group according to the AC output port waveforms.

[0105] Preferably, after determining the on-test results of each IGBT switch component group according to the AC output port waveforms, the method further includes:

[0106] When the unlocking enable is set to an invalid value, stop triggering is performed on each IGBT switch component group, and after the stop triggering, the waveforms at the AC output ports of each supercapacitor module under test disappear;

[0107] Determine the information that the waveforms at the AC output ports disappear as the turn-off test results of each IGBT switch component group.

[0108] In a specific embodiment, during valve tower testing, it is necessary to test whether the turn-on and turn-off triggering of the IGBT switch component groups in the supercapacitor module under test is normal. Therefore, IGBT turn-on and turn-off triggering tests need to be carried out. The test steps are as follows:

[0109] After directly supplying power to the DC side of the supercapacitor module under test with a DC power supply, set the trigger pulse switch frequency and duty cycle by setting parameters such as "test parameter - unlocking switch frequency" and "test parameter - unlocking switch duty cycle".

[0110] After setting "test parameter - unlocking enable" to be valid, the supercapacitor module under test starts to perform IGBT triggering. Use an oscilloscope to observe whether the waveforms at the AC output ports of each supercapacitor module under test are correct; after each supercapacitor module is unlocked, set "test parameter - unlocking enable" to be invalid, and the supercapacitor module under test stops IGBT switch triggering, and the module step wave output is no longer displayed on the oscilloscope.

[0111] If the switch type under test includes a bypass switch, set the test parameters of the valve control test equipment, including: setting the manual bypass action command in the test parameters of the bypass switch to a valid value;

[0112] Based on the switch types under test of multiple supercapacitor modules under test, send test commands corresponding to the switch types under test to the multiple supercapacitor modules under test through the valve control test equipment, and obtain the test results returned by the switches under test for the test commands, including:

[0113] Send the manual bypass action command to each supercapacitor module under test;

[0114] Each supercapacitor module under test controls the bypass switch to perform a closing action, and each supercapacitor module is in a bypass state. Determine each bypass state as the turn-on test result of each bypass switch.

[0115] Preferably, after determining each bypass state as the turn-on test result of each bypass switch, the method further includes: setting the clear sub-module bypass flag command in the test parameters of the bypass switch to a valid value;

[0116] Open the bypass switch, clear the bypass position, and determine the cleared bypass position as the turn-off test result of each bypass switch.

[0117] In a specific embodiment, a bypass switch is equipped inside the network-forming converter valve with supercapacitors. When a supercapacitor module under test fails, fault isolation is achieved through rapid bypass, improving the stable operation ability of the equipment. When testing the valve tower, the test steps for the bypass switch of the supercapacitor module under test are as follows:

[0118] After setting the "test parameter - manual bypass action command" to be valid, the valve control test system will send the bypass command to the supercapacitor module under test through optical fiber communication. After the central control board of the supercapacitor module under test receives the bypass command, it will control the bypass switch to perform a closing action, and the monitoring interface will display that the module is in the bypass state. After the bypass switch is closed, only manual opening of the bypass switch can be performed. Then, after setting the "test parameter - clear sub-module bypass flag command" to be valid, the bypass position stored in the valve control test equipment can be cleared to restore the normal operation of the module.

[0119] If the switch type under test includes a shunt trip switch, the test parameters of the valve control test equipment are set, including: setting the shunt trip command for the supercapacitor cluster circuit breaker in the shunt trip switch maintenance parameters;

[0120] Based on the switch types under test of multiple supercapacitor modules under test, the valve control test equipment sends test commands corresponding to the switch types under test to the multiple supercapacitor modules under test, and obtains the test results returned by the switches under test for the test commands, including:

[0121] When the shunt trip command for the supercapacitor cluster circuit breaker is set to a valid value, a shunt trip switch opening command is sent to the supercapacitor cluster to place the shunt trip switch in the off position;

[0122] The information that the shunt trip switch is in the off position is determined as the turn-off test result of the shunt trip switch.

[0123] Preferably, after determining the information that the shunt trip switch is in the off position as the turn-off test result of the shunt trip switch, the method further includes:

[0124] When the shunt trip command for the supercapacitor cluster circuit breaker is set to an invalid value, a shunt trip switch closing command is sent to the supercapacitor cluster to place the shunt trip switch in the on position;

[0125] The information that the shunt trip switch is in the on position is determined as the turn-on test result of the shunt trip switch.

[0126] In a specific embodiment, the IGBT switch component group is connected in parallel with the supercapacitor cluster and is connected through a shunt trip switch in the middle. When testing the valve tower, the steps for the supercapacitor shunt trip command are as follows:

[0127] After setting the "Test Parameter - Tripping Command for Ultra-capacitor Cluster Circuit Breaker" to effective, the valve control test equipment will send a command to disconnect the shunt trip switch to the ultra-capacitor cluster through the optical fiber, and disconnect the shunt trip switch; after setting the "Test Parameter - Tripping Command for Ultra-capacitor Cluster Circuit Breaker" to ineffective, the valve control test equipment will send a command to close the shunt trip switch to the ultra-capacitor cluster through the optical fiber, and re-close the shunt trip switch.

[0128] After obtaining the test result returned by the switch under test for the test command, the operating condition of the network-forming converter valve with ultra-capacitors is obtained according to the test result.

[0129] The ultra-capacitor maintenance system based on the network-forming technology provided by the present invention is composed of a high-voltage DC power supply, an input access switch K1, a valve control test equipment under the valve tower of the sub-module, a monitoring software, an oscilloscope, a high-voltage probe, and a 220V / 10A AC power distribution power supply. Among them, the functions of each part are as follows:

[0130] DC high-voltage power supply: used to charge the capacitors of the ultra-capacitor modules to be tested in the converter valve;

[0131] Input access switch K1: disconnect the DC power supply and the ultra-capacitor module to be tested after pressurization;

[0132] Valve control test equipment: transfer the valve control background to under the converter valve tower;

[0133] Monitoring software: used to send commands to the ultra-capacitor modules to be tested and monitor the status of the ultra-capacitor modules to be tested;

[0134] High-voltage probe: measure the AC port voltage of the ultra-capacitor module to be tested;

[0135] AC power distribution power supply: generally with a capacity of 220V / 10A, mainly used for power supply to measurement equipment and control equipment.

[0136] Through the ultra-capacitor maintenance system based on the network-forming technology and using the test method of the network-forming converter valve with ultra-capacitors, the comprehensive test of multiple ultra-capacitor modules to be tested can be completed at one time, covering functions such as the start-up voltage test of the ultra-capacitor modules to be tested, the on / off test of IGBT switching components, the switching protection action test of the ultra-capacitor modules to be tested, the communication test between the central control board of the ultra-capacitor modules to be tested and the valve control, the communication test between the ultra-capacitor modules to be tested, and the shunt trip switch test, etc., providing a comprehensive and efficient detection method for the ultra-capacitor maintenance system and improving the on-site maintenance efficiency.

[0137] Without loss of generality, taking the on-site maintenance test items of the ultra-capacitor module to be tested based on the network-forming technology as an example, the embodiments of the present invention will be described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and the detailed implementation manner and specific process are given, but the protection scope of the present invention is not limited to the following embodiments. This test process includes 4 ultra-capacitor modules to be tested, which can also be called sub-modules.

[0138] When the overhaul system for the supercapacitor module to be tested based on the network-forming technology is in on-site overhaul, it needs to be charged twice and verify the following test items:

[0139] (1) Starting voltage test of the supercapacitor module to be tested

[0140] (2) IGBT turn-on / turn-off test

[0141] (3) Bypass switch protection action test

[0142] (4) Communication test between the supercapacitor modules to be tested

[0143] (5) Communication test between the central control board and the valve control of the supercapacitor module to be tested

[0144] (6) Shunt trip switch test of the supercapacitor module to be tested

[0145] At the beginning of the test, wire according to the test schematic diagram. The output of the high-voltage DC power supply is connected to the busbars on both sides of the valve module, and the input of the high-voltage probe is also connected to the busbars on both sides of the valve module. Then connect the output of the high-voltage probe to the oscilloscope. During the test, it is required to ensure safety. Install isolation fences and hang signs reading "Stop, High Voltage Danger". Confirm that the AC220V AC power supply wiring is reliable. The test operation sequence is as follows:

[0146] (1) Starting voltage test of the supercapacitor module to be tested

[0147] Test method: Check the test circuit. If there is no error, close the disconnecting switch K1. The high-voltage DC power supply charges each supercapacitor module to be tested of the converter valve. Generally, a single valve section contains multiple supercapacitor modules to be tested. In this test, it contains 4 supercapacitor modules to be tested, and the charging voltage is about 2000V.

[0148] Qualified criterion: After the supercapacitor module to be tested is powered on, it establishes communication with the valve control, there is no communication frame loss, and the voltage of each supercapacitor module to be tested within a single valve section is normal. When there are 4 supercapacitor modules to be tested in a single valve section, the charging voltage is about 2000V, and the voltage of each supercapacitor module to be tested is within the qualified range of 500V±30V), and the uploaded program version number of the supercapacitor module to be tested is normal.

[0149] (2) IGBT turn-on / turn-off test

[0150] Test method: Turn off the DC power supply, disconnect the disconnecting switch K1, alternately send trigger commands through the valve control test system, set the switching frequency to 200Hz until the supercapacitor module to be tested loses power, and use the oscilloscope to observe whether the waveform of the AC output port of the supercapacitor module to be tested is correct, and observe whether the supercapacitor module to be tested is bypassed and returns the correct message.

[0151] Qualified criterion:

[0152] Judge whether the test is qualified by the waveform of the output port detected by the oscilloscope. For example, for the H4 valve module, at the moment of just unlocking, the output port voltage amplitude is 2000V ± 50V, the frequency is 200Hz ± 5Hz, and the duty cycle is 70 ± 5%; as the capacitor voltage decreases, the amplitude also decreases.

[0153] (3) Bypass switch protection action test for the supercapacitor module to be tested

[0154] Test method: Continuously trigger the supercapacitor module to be tested to turn on and off. Eventually, due to a power-off fault protection action, the bypass will close. The tester observes whether all bypass switches close correctly.

[0155] Qualification criterion: During the test, the bypass switches of each supercapacitor module to be tested in the valve section are all closed successively.

[0156] (4) Inter-module communication test for the supercapacitor module to be tested

[0157] Test method: During the power-off bypass process of the supercapacitor module to be tested, a series of power-off-related messages will be reported. Communication anomalies will occur successively between the central control board of the supercapacitor module to be tested and the valve control, and between the supercapacitor modules to be tested during power-off. Observe the messages reported during the power-off stage to test whether each communication detection is normal.

[0158] Qualification criterion: The following messages are reported during the power-off process: "Bypass switch closed", "Energy-taking power supply fault", "Central control board power supply fault", "SM->SM communication anomaly" is reported between adjacent supercapacitor modules to be tested, and "Receiving module communication anomaly" is reported by the valve control.

[0159] (5) Communication test between the central control board of the supercapacitor module to be tested and the valve control

[0160] Test method: Send the "operating status" command to the supercapacitor module to be tested through the valve control test system, and observe the response information of the supercapacitor module to be tested.

[0161] Qualification criterion: Confirm through the monitoring background that the supercapacitor module to be tested reports module available information, and the supercapacitor module to be tested does not report any fault bits.

[0162] (6) Shunt trip switch test for the supercapacitor module to be tested

[0163] Test method: First, send the "shunt trip switch off" command to the module through the valve control test system, and observe whether "shunt trip switch is in off position" is reported; then send the "shunt trip switch on" command to the supercapacitor module to be tested through the valve control test system, and observe whether "shunt trip switch is in on position" is reported;

[0164] Qualification criterion: The supercapacitor module to be tested first reports "shunt trip switch is in off position", and then the supercapacitor module to be tested reports "shunt trip switch is in on position" information.

[0165] (7) End of the test

[0166] The valve control first removes the "operating status" instruction, then disconnects the isolating switch K1, and then adjusts the DC output voltage to zero. At the same time, the communication status of the super-capacity modules to be tested is observed through monitoring. After the communication of all super-capacity modules to be tested is interrupted, a grounding rod is hung at the positive end of the DC power supply. Only then can the test personnel remove the wires and conduct the next group of super-capacity modules to be tested.

[0167] The test method of the grid-type converter valve with supercapacity provided by the present invention has the following effects:

[0168] The super-capacitor module test system based on the networking technology consists of a DC high-voltage power supply, an input access switch K1, a valve-controlled test device, monitoring software, an oscilloscope, a high-voltage probe, and a 220V / 10A AC distribution power supply. The test system and the test method of the networking-type converter valve with super-capacitor are easy and quick to use.

[0169] Through the super-capacity module testing system of the networking technology and the testing method of the networking type converter valve with super-capacity, the testing of multiple super-capacity modules to be tested in a single valve section can be completed at one time. The test efficiency is high and the test functions are comprehensive, which can improve the efficiency of on-site maintenance.

[0170] Through the super-capacity module testing system of networking technology and the testing method of networking type converter valve with super-capacity, the starting voltage test of the super-capacity module to be tested, the bypass switch action test of the super-capacity module to be tested, the communication test between the central control board and valve control of the super-capacity module to be tested, and the communication test between the super-capacity modules to be tested can be completed. These tests basically cover the main functions of the super-capacity module to be tested.

[0171] Through the super-capacity module test system of the networking technology and the test method of the networking type converter valve with super-capacity, comprehensive tests such as protection action test of the bypass switch of the super-capacity module to be tested, bypass position storage of the super-capacity module to be tested, and power-off fault protection of the super-capacity module to be tested can be performed.

[0172] Through the super-capacity module test system of the networking technology and the test method of the networking type converter valve with super-capacity, the super-capacity module to be tested can be powered on and off, and the starting voltage of the super-capacity module to be tested, the communication between the super-capacity module to be tested and the valve control, and the communication between the super-capacity modules to be tested can be comprehensively tested.

[0173] Embodiment 2:

[0174] Based on the same inventive concept, the present invention also provides a test system 700 of a grid-type converter valve with supercapacity, the structure of which is as follows: Figure 7 As shown, the system includes:

[0175] An access setting module 701 is configured to connect the network-forming converter valve with supercapacitors to a valve control test device and set the test parameters of the valve control test device; the network-forming converter valve with supercapacitors includes a plurality of supercapacitor modules to be tested.

[0176] A DC side power supply module 702 is configured to supply power to the DC sides of the plurality of supercapacitor modules to be tested through a DC power source and enable protection for the plurality of supercapacitor modules to be tested.

[0177] A to-be-tested switch test module 703 is configured to send a test command corresponding to the to-be-tested switch type to the plurality of supercapacitor modules to be tested through the valve control test device based on the to-be-tested switch types of the plurality of supercapacitor modules to be tested, and obtain a test result returned by the to-be-tested switch for the test command.

[0178] An operating condition obtaining module 704 is configured to obtain the operating condition of the network-forming converter valve with supercapacitors according to the test result.

[0179] Preferably, the supercapacitor module to be tested includes an insulated gate bipolar transistor (IGBT) switch component group, a shunt release switch, a bypass switch, a supercapacitor, and a supercapacitor cluster; wherein, the IGBT switch component group, the shunt release switch, and the supercapacitor cluster form a series circuit, the bypass switch is connected in parallel with one of the IGBT switches in the IGBT switch component group, and the supercapacitor is connected in parallel across the IGBT switch component group.

[0180] The to-be-tested switch types include: the IGBT switch component group, the bypass switch, and the shunt release switch; the IGBT switch component group includes a plurality of series-connected and / or parallel-connected IGBT switches.

[0181] Preferably, if the to-be-tested switch type includes the IGBT switch component group, the access setting module is specifically configured to: set the unlocking switch frequency and the unlocking switch duty ratio in the test parameters of the IGBT switch component group; and set the unlocking enable in the test parameters.

[0182] The to-be-tested switch test module is specifically configured to:

[0183] When the unlocking enable is set to a valid value, trigger each IGBT switch component group based on the unlocking switch frequency, the unlocking switch duty ratio, and the valid value of the unlocking enable.

[0184] Obtain the AC output port waveforms of each supercapacitor module to be tested respectively, and determine the turn-on test results of each IGBT switch component group according to the AC output port waveforms.

[0185] Preferably, the to-be-tested switch test module is further configured to:

[0186] When the unlocking enable is set to an invalid value, stop triggering is performed on each IGBT switch component group, and after the stop triggering, the waveforms at the AC output ports of each ultracapacitor module to be tested disappear;

[0187] Determine the information that the waveforms at the AC output ports disappear as the turn-off test results of each IGBT switch component group.

[0188] Preferably, if the switch type to be tested includes a bypass switch, the access setting module is specifically configured to: set the manual bypass action command in the test parameters of the bypass switch to a valid value;

[0189] The switch to be tested test module is specifically configured to:

[0190] Send the manual bypass action command to each ultracapacitor module to be tested;

[0191] Each ultracapacitor module to be tested controls the bypass switch to perform a closing action, each ultracapacitor module to be tested is in a bypass state, and determine each bypass state as the turn-on test result of each bypass switch.

[0192] Preferably, the switch to be tested test module is further configured to:

[0193] Set the clear sub-module bypass flag command in the test parameters of the bypass switch to a valid value;

[0194] Open the bypass switch, clear the bypass position, and determine the cleared bypass position as the turn-off test result of each bypass switch.

[0195] Preferably, if the switch type to be tested includes a shunt trip switch, the access setting module is specifically configured to: set the ultracapacitor cluster circuit breaker trip command in the shunt trip switch maintenance parameters;

[0196] The switch to be tested test module is specifically configured to:

[0197] When the ultracapacitor cluster circuit breaker trip command is set to a valid value, send a shunt trip switch opening command to the ultracapacitor cluster to place the shunt trip switch in the off position;

[0198] Determine the information that the shunt trip switch is in the off position as the turn-off test result of the shunt trip switch.

[0199] Preferably, the switch to be tested test module is further configured to:

[0200] When the ultracapacitor cluster circuit breaker trip command is set to an invalid value, send a shunt trip switch closing command to the ultracapacitor cluster to place the shunt trip switch in the on position;

[0201] Determine the information that the shunt trip switch is in the on position as the turn-on test result of the shunt trip switch.

[0202] Preferably, the ultracapacitor module to be tested communicates with the valve control test equipment through optical fiber for receiving and transmitting.

[0203] Embodiment 3:

[0204] Based on the same inventive concept, as Figure 8 shown, the present invention further provides an electronic device, which may be a computer device, a single-chip microcomputer device, a smart mobile device, etc. The electronic device in this embodiment may include a processor, a memory, a transceiver component, etc. The memory, the processor, and the transceiver component are connected through a bus; the memory can be used to store an execution program, and an exemplary execution program may include instructions; the processor is used to execute the instructions stored in the memory. The memory can also be used to store data, and this data can be called and / or modified when the instructions are executed.

[0205] The processor may be a Central Processing Unit (CPU), or may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, and is suitable for implementing one or more instructions. Specifically, it is suitable for loading and executing one or more instructions in a readable storage medium to implement the corresponding method flow or corresponding function, so as to implement the steps of a test method for a network-forming converter valve with supercapacitors in the above embodiments.

[0206] Embodiment 4:

[0207] Based on the same inventive concept, the present invention also provides a readable storage medium, specifically an electronic device-readable storage medium (Memory). The electronic device-readable storage medium is a memory device in the electronic device and is used to store programs and data. It can be understood that the readable storage medium here can include both the built-in storage medium in the electronic device and, of course, the extended storage medium supported by the electronic device. The storage medium provides a storage space, and this storage space stores the operating system of the terminal. Moreover, in this storage space, there is also stored one or more instructions suitable for being loaded and executed by the processor. These instructions can be one or more execution programs (including program codes). It should be noted that the storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The one or more instructions stored in the storage medium can be loaded and executed by the processor to implement the steps of the testing method for a networking type converter valve with super capacitance in the above-mentioned embodiments.

[0208] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0209] The present invention is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the flows and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0210] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing devices to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0211] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process or multiple processes and / or blocks Figure 1 one process or multiple processes and / or blocks Figure 1 or multiple blocks.

[0212] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the scope of its protection. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that after reading the present invention, various changes, modifications or equivalent replacements can still be made to the specific implementation manners of the application. However, these changes, modifications or equivalent replacements are all within the scope of protection of the claims pending for approval of the application.

Claims

1. A test method for a grid-type converter valve with an overcapacity, characterized in that: include: Connecting the grid-type converter valve with supercapacity to a valve control test device, and setting the test parameters of the valve control test device; the grid-type converter valve with supercapacity includes a plurality of supercapacity modules to be tested; Powering the DC side of the plurality of super-capacity modules to be tested by a DC power supply, and enabling protection for the plurality of super-capacity modules to be tested; Based on the types of switches to be tested of the multiple super-capacity modules to be tested, sending test commands corresponding to the types of switches to be tested to the multiple super-capacity modules to be tested through a valve-controlled test device, and obtaining test results returned by the switches to be tested in response to the test commands; According to the test results, the operating status of the grid-type converter valve with excess capacity is obtained.

2. The method according to claim 1, characterized in that The supercapacitor module to be tested comprises an insulated gate bipolar transistor IGBT switch component group, a shunt switch, a bypass switch, a supercapacitor and a supercapacitor cluster; wherein the IGBT switch component group, the shunt switch and the supercapacitor cluster form a series circuit, the bypass switch is connected in parallel to one of the IGBT switch components of the IGBT switch component group, and the supercapacitor is connected in parallel to both ends of the IGBT switch component group; The switch types to be tested include: an IGBT switch component group, a bypass switch and a shunt switch; the IGBT switch component group includes a plurality of IGBT switch components connected in series and / or in parallel.

3. The method according to claim 2, characterized in that If the switch type to be tested includes the IGBT switch component group, setting the test parameters of the valve-controlled test device includes: setting the unlock switch frequency and the unlock switch duty cycle in the test parameters of the IGBT switch component group; and setting the unlock enable in the test parameters; The method of sending a test command corresponding to the switch type to be tested to the multiple super-capacity modules to be tested based on the switch types to be tested of the multiple super-capacity modules to be tested by a valve-controlled test device, and obtaining a test result returned by the switch to be tested for the test command, includes: When the unlock enable is set to a valid value, each of the IGBT switch component groups is triggered based on the unlock switch frequency, the unlock switch duty cycle, and the valid value of the unlock enable; The AC output port waveform of each of the super-capacity modules to be tested is obtained respectively, and the turn-on test result of each of the IGBT switch component groups is determined according to the AC output port waveform.

4. The method according to claim 3, characterized in that After determining the turn-on test result of each IGBT switch component group according to the AC output port waveform, the method further includes: When the unlock enable is set to an invalid value, a stop trigger is performed on each of the IGBT switch component groups, and after the stop trigger, the AC output port waveform of each of the super-capacity modules to be tested disappears; The information that the AC output port waveform disappears is determined as a shutdown test result of each of the IGBT switch component groups.

5. The method according to claim 2, characterized in that: If the switch type to be tested includes the bypass switch, setting the test parameters of the valve-controlled test device includes: setting the manual bypass action command in the test parameters of the bypass switch to a valid value; The method of sending a test command corresponding to the switch type to be tested to the multiple super-capacity modules to be tested based on the switch types to be tested of the multiple super-capacity modules to be tested by a valve-controlled test device, and obtaining a test result returned by the switch to be tested for the test command, includes: Sending the manual bypass action command to each of the super-capacity modules to be tested; Each of the super-capacity modules to be tested controls the bypass switch to perform a closing action, and each of the super-capacity modules to be tested is in a bypass state, and each of the bypass states is determined as an opening test result of each of the bypass switches.

6. The method according to claim 5, characterized in that After determining each of the bypass states as an opening test result of each of the bypass switches, the method further includes: setting a clear submodule bypass mark command in the test parameters of the bypass switch to a valid value; The bypass switch is opened to clear the bypass position, and the cleared bypass position is determined as a shutdown test result of each bypass switch.

7. The method according to claim 2, characterized in that If the switch type to be tested includes the shunt switch, the step of setting the test parameters of the valve-controlled test device includes: setting the over-capacity cluster circuit breaker trip command in the shunt switch maintenance parameters; The method of sending a test command corresponding to the switch type to be tested to the multiple super-capacity modules to be tested based on the switch types to be tested of the multiple super-capacity modules to be tested by a valve-controlled test device, and obtaining a test result returned by the switch to be tested for the test command, includes: When the circuit breaker opening command of the overcapacity cluster is set to a valid value, a shunt switch disconnect command is sent to the overcapacity cluster to put the shunt switch in the open position; The information that the shunt switch is in the open position is determined as the shutdown test result of the shunt switch.

8. The method according to claim 7, characterized in that After determining the information that the shunt switch is in the open position as the shutdown test result of the shunt switch, the method further includes: When the circuit breaker opening command of the overcapacity cluster is set to an invalid value, a shunt switch closing command is sent to the overcapacity cluster to close the shunt switch; The information that the shunt switch is in the closed position is determined as the opening test result of the shunt switch.

9. The method according to any one of claims 1 to 8, characterized in that: The super-capacity module to be tested communicates with the valve control test equipment via transceiver optical fibers.

10. A test system for a grid-type converter valve with supercapacity, characterized in that: include: An access setting module is used to connect the grid-type converter valve with supercapacity to a valve control test device and set the test parameters of the valve control test device; the grid-type converter valve with supercapacity includes a plurality of supercapacity modules to be tested; A DC side power supply module, used for supplying power to the DC side of the plurality of super-capacity modules to be tested through a DC power supply, and enabling protection for the plurality of super-capacity modules to be tested; The switch test module is used to send a test command corresponding to the switch type to be tested to the multiple super-capacity modules to be tested through a valve control test device based on the switch type to be tested of the multiple super-capacity modules to be tested, and obtain a test result returned by the switch to be tested for the test command; An operating status obtaining module is used to obtain the operating status of the grid-type converter valve with excess capacity according to the test results.

11. An electronic device, characterized in that: include: at least one processor and memory; The memory and the processor are connected via a bus; The memory is used to store one or more programs; When the one or more programs are executed by the at least one processor, the testing method of the grid-type converter valve with supercapacity as described in any one of claims 1 to 9 is implemented.

12. A readable storage medium, characterized in that: An execution program is stored thereon, and when the execution program is executed, the test method of the grid-type converter valve with super capacity as described in any one of claims 1 to 9 is implemented.

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