Interface devices and testing methods for connecting valve base control equipment and digital simulation platform

Abstract

An interface device for connecting a valve-based control device and a digital simulation platform includes: an interface chassis and a debugging workstation interconnected; the interface chassis is connected to both the valve-based control device and the digital simulation platform; the debugging workstation is used to send control commands to the interface chassis to correct the status data sent by the converter valve model on the digital simulation platform; the interface chassis is used to reconcile differences in communication rate, communication frame format, and communication period between the valve-based control device and the digital simulation platform; it is also used to modify the converter valve status information and protocol sent by the converter valve model on the digital simulation platform according to the control commands of the debugging workstation, thereby simulating the fault types and / or anomalies of the converter valve submodule. This technical solution simulates the fault types of the submodule through the human-machine interface of the debugging workstation in the interface chassis, realizing comprehensive verification of the interface function of the valve-based control device.

Description

Technical Field

[0001] This invention relates to an interface device, and more specifically to an interface device and testing method for connecting a valve base control device and a digital simulation platform. Background Technology

[0002] Flexible direct current (DC) transmission is hailed as the third generation of power transmission technology, following alternating current (AC) transmission and conventional DC transmission. Compared to the previous two generations, its biggest improvement lies in its ability to flexibly adjust the voltage of the power system while transmitting energy, thus enhancing the safety and stability of the transmission system. It shows great promise in areas such as renewable energy grid connection, power supply to large cities / critical loads, grid interconnection, and power supply to isolated islands / drilling platforms. Valve-based control (VBC) equipment is a crucial component of flexible DC transmission projects.

[0003] RT-LAB is an industrial-grade real-time system simulation platform software package launched by Opal-RT Technologies. RTDS, short for Real-Time Digital Simulator, was developed by RTDS Inc. in Manitoba, Canada, and is a device specifically designed for studying transient phenomena in power systems. HYPERSIM is a real-time power system simulation system developed by TEQSIM, a company at Hydro-Quebec Institute in Canada, primarily used for electromagnetic transient simulation of power systems. All three simulation software programs are distributed real-time platforms that can simplify the design process of engineering systems by performing engineering simulations or building dynamic models of physical in-loop real-time systems in a very short time and at a low cost.

[0004] Existing interface devices for real-time digital simulation platforms have relatively limited functions, mainly implementing protocol matching and being used for system function testing such as VBC start-up and shutdown, steady-state operation, and short-circuit faults. They do not have the ability to fully verify valve control interface functions. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides an interface device for connecting a valve base control device and a digital simulation platform, comprising: an interface chassis and a debugging workstation that are interconnected.

[0006] The interface chassis is connected to the valve base control device and the digital simulation platform, respectively.

[0007] The debugging workstation is used to send control commands to the interface chassis to correct the status data sent by the converter valve model of the digital simulation platform.

[0008] The interface chassis is used to reconcile the differences in communication rate, communication frame format, and communication cycle between the valve base control device and the digital simulation platform; it is also used to modify the converter valve status information and protocol sent by the converter valve model of the digital simulation platform according to the control instructions of the debugging workstation, thereby simulating the fault type and / or abnormality of the converter valve submodule.

[0009] Preferably, the interface chassis includes: a core board and a plurality of interface boards connected to the core board;

[0010] The multiple interface boards are connected to the valve base control device and are used to simulate the communication protocol, communication timing and fault information reporting timing after the converter valve submodule of the flexible DC transmission project is faulty, and send them to the core board.

[0011] The core board is connected to the debugging workstation and the digital simulation platform respectively. It is used to send the converter valve status information sent by the converter valve model of the digital simulation platform and the control commands of the debugging workstation to the interface board, and merge the data sent by the interface board. Then, it modifies the converter valve status information of the converter valve model of the digital simulation platform according to the control commands of the debugging workstation and forwards the protocol to the interface board.

[0012] Preferably, the interface board includes:

[0013] The first receiving module is used to receive downlink communication data frames sent by the valve base control device and uplink communication data frames sent by the converter valve model of the data simulation platform transmitted by the core board.

[0014] The simulation transmission module is used to transmit downlink communication data frames sent by the valve base control device based on the first receiving module to the core board, and to simulate the communication protocol, communication timing, and fault information reporting timing after the converter valve submodule fails, based on the data sent by the converter valve model of the data simulation platform transmitted by the core board based on the first receiving module, and to transmit the data to the valve base control device.

[0015] Preferably, the uplink communication data frame includes: submodule capacitor voltage, detailed submodule internal fault / status information, IGBT on / off status, and submodule central control board program version number;

[0016] The downlink communication data frame includes converter valve protection enable, protection threshold adjustment enable, and submodule control commands.

[0017] Preferably, the core board includes: a second receiving module, a harmonic module, and an encoding module that are interconnected;

[0018] The second receiving module is used to receive the converter valve status information sent by the converter valve model of the digital simulation platform, the data transmitted by the interface board, and the control commands issued by the debugging workstation.

[0019] The encoding module is used to re-encode the converter valve status information sent by the converter valve model of the digital simulation platform according to the actual communication data in the flexible DC project, and send it to the interface board; wherein, the communication data includes: communication rate, communication frame format and communication period;

[0020] The harmonization module is used to harmonize the differences in communication rate, communication frame format, and communication cycle between the valve base control device and the digital simulation platform, and send the harmonized status information to the interface board, and send the harmonized downlink communication data frame to the digital simulation platform.

[0021] The control module is used to modify the converter valve status information and protocol sent by the converter valve model of the digital simulation platform, which has been re-encoded by the encoding module, according to the control commands issued by the debugging workstation.

[0022] Preferably, the status information includes: submodule capacitor voltage, fault status of some device levels, and bridge arm current.

[0023] Preferably, the debugging workstation includes a human-computer interaction interface;

[0024] The human-machine interface is connected to the core board. The debugging workstation sends control commands to the core board based on the human-machine interface to set the location and fault type of the converter valve sub-module that has failed in the converter valve model, the program version number of the converter valve sub-module, and the value and duration of the bridge arm current. It is also used to send control commands to the interface chassis to set the capacitor voltage value and duration of a single or batch of converter valve sub-modules.

[0025] Preferably, the valve base control device and the interface board of the interface chassis use a communication rate of Mbps and a communication cycle of 100us or 50us, and the core board and the digital simulation platform use a communication rate of Gbps and a communication cycle of 2.5us, 10us, 20us or 50us.

[0026] Preferably, the interface chassis is connected to the valve base control equipment and the real-time digital simulation platform via optical fiber.

[0027] Based on the same inventive concept, this invention also provides a method for testing using an interface device connecting a valve-based control device and a digital simulation platform, comprising:

[0028] The debugging workstation sends control commands to the interface chassis to correct the status data sent by the converter valve model on the digital simulation platform.

[0029] The interface chassis harmonizes the differences in communication rate, communication frame format, and communication cycle between the valve base control device and the digital simulation platform, and modifies the converter valve status information and protocol sent by the converter valve model of the digital simulation platform according to the control instructions of the debugging workstation, and then simulates the fault type and / or abnormality of the converter valve submodule according to the control instructions.

[0030] Preferably, the debugging workstation sends control commands to the interface chassis to correct the status data sent by the converter valve model of the digital simulation platform, including:

[0031] The debugging workstation sends control commands to the core board of the interface chassis via a human-machine interface to set the location and fault type of the faulty converter valve submodule in the converter valve model, the program version number of the converter valve submodule, and the value and duration of the bridge arm current. It is also used to send control commands to the interface chassis to set the capacitor voltage value and duration of one or more converter valve submodules.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. This invention provides an interface device for connecting a valve base control device and a digital simulation platform, comprising an interface chassis and a debugging workstation interconnected. The interface chassis is connected to both the valve base control device and the digital simulation platform. The debugging workstation is used to send control commands to the interface chassis to correct the status data sent by the converter valve model on the digital simulation platform. The interface chassis is used to reconcile differences in communication rate, communication frame format, and communication period between the valve base control device and the digital simulation platform. It is also used to modify the converter valve status information and protocol sent by the converter valve model on the digital simulation platform according to the control commands from the debugging workstation, thereby simulating the fault types and / or anomalies of the converter valve submodule. The technical solution of this invention can not only realize the protocol matching function but also comprehensively verify the function of the valve control interface. Attached Figure Description

[0034] Figure 1 This is a functional topology diagram of the interface device of the present invention;

[0035] Figure 2 This is a schematic diagram illustrating a specific application of the interface device of the present invention;

[0036] Figure 3 This is a schematic diagram showing the layout of the interface device and valve base control device of the present invention within the cabinet;

[0037] Figure 4This is a flowchart of the method for testing using an interface device that connects a valve base control device and a digital simulation platform, according to the present invention. Detailed Implementation

[0038] This invention discloses an interface device for connecting flexible DC transmission valve base control equipment to a simulation platform. The device includes an interface chassis and a debugging workstation. The interface chassis connects the valve base control equipment and the real-time digital simulation platform. The debugging workstation can quantitatively simulate various submodule-level detailed faults and fault timing, bridge arm current values ​​and holding times, enabling comprehensive and accurate hardware closed-loop testing of the VBC.

[0039] Example 1:

[0040] An interface device for connecting valve-based control equipment and a digital simulation platform, such as... Figure 1 As shown: The interface device is used to connect the valve base control equipment and the digital simulation platform; it includes: an interconnected interface chassis and a debugging workstation;

[0041] The interface chassis is connected to the valve base control device and the digital simulation platform, respectively.

[0042] The debugging workstation is used to send control commands to the interface chassis to correct the status data sent by the converter valve model of the digital simulation platform.

[0043] The interface chassis is used to reconcile the differences in communication rate, communication frame format, and communication cycle between the valve base control device and the digital simulation platform; it is also used to modify the converter valve status information and protocol sent by the converter valve model of the digital simulation platform according to the control instructions of the debugging workstation, thereby simulating the fault type and / or abnormality of the converter valve submodule.

[0044] An interface device for hardware closed-loop testing of a flexible DC transmission valve-based control device on a real-time digital simulation platform is disclosed. This interface device acts as an intermediary bridge between the VBC device and the real-time digital simulation platform, together forming a hardware closed-loop testing system for the valve-based control device. Figure 1 As shown;

[0045] The test system mainly includes a valve base centralized control and protection box (AB dual redundancy configuration to realize the control and protection of the entire converter valve), 6 groups of bridge arm segment control boxes (each group of bridge arm segment control boxes connects to the converter valve sub-module of one bridge arm), and a converter valve bridge arm overcurrent protection box (triple redundancy configuration).

[0046] The interface device consists of two parts, a and b, such as... Figure 2As shown. Here, a is the interface chassis, which enables hardware interconnection between the full-scale VBC and the converter valve model of the real-time digital simulation platform. It can also correct the converter valve status information sent by the converter valve model from the real-time numerical simulation platform according to the control commands of the debugging workstation. b is the debugging workstation, which can control and monitor the operation of the interface chassis and correct the status data sent by the converter valve model from the real-time numerical simulation platform.

[0047] The hardware boards used in the interface chassis can be different from or the same as those in the VBC chassis. A typical application is that the hardware is the same for both, which can reduce the number of versions maintained by the hardware boards.

[0048] 1) The interface chassis mainly consists of one core board and several interface boards;

[0049] 2) The core board of the interface chassis mainly realizes high-speed communication with the real-time digital simulation platform and TCP / IP communication with the debugging workstation. It sends information from the real-time digital simulation platform and the debugging workstation to the interface board, and merges the data sent by the interface board, modifies the protocol and forwards it to the real-time digital simulation platform.

[0050] 3) The interface board of the interface chassis mainly simulates the communication protocol, communication timing, and fault information reporting timing of the converter valve submodule and valve control equipment in the flexible DC transmission project;

[0051] 4) The interface chassis serves as an intermediate bridge between the VBC and the converter valve model in the real-time digital simulation platform, and needs to reconcile the differences between the two in terms of communication rate, communication frame format, and communication cycle.

[0052] There are differences in the downlink communication data frames: The downlink communication data frames (i.e., submodule control commands) sent by VBC to the interface chassis include converter valve protection enable, protection threshold adjustment enable, submodule control commands, etc.; however, the real-time digital simulation platform model only needs to obtain the submodule control commands through the interface chassis, including the IGBT turn-on / turn-off of the submodule, thyristor triggering, bypass switch closing, etc.

[0053] There are differences in the uplink communication data frames: the status information sent by the real-time digital simulation platform model to the interface chassis includes submodule capacitor voltage, fault status of some devices, bridge arm current, etc.; VBC needs to obtain submodule capacitor voltage, detailed internal fault / status information of submodule, IGBT turn-on / turn-off status, submodule central control board program version number, etc., according to the engineering submodule communication protocol.

[0054] There are differences in communication rates: the communication between VBC and the interface chassis uses the engineering submodule communication rate, which is in the Mbps range; the communication between the interface chassis and the real-time digital simulation platform uses Aurora communication, which has a rate in the Gbps range.

[0055] Communication cycle: The communication cycle between VBC and the interface chassis is 100us or 50us, which is the level of the engineering submodule. The communication cycle between the interface chassis and the real-time digital simulation platform is related to the simulation step size and can be variable. Commonly used levels are 2.5us, 10us, 20us, 50us, etc.

[0056] 5) According to 2), after the core board of the interface chassis obtains the bridge arm current information sent by the real-time digital simulation platform, it re-encodes the data according to the communication frame format, communication rate and communication period of the bridge arm current acquisition unit in the actual flexible DC project, and finally sends the bridge arm current to VBC through the interface board.

[0057] The b-type debugging workstation features a simple and user-friendly human-machine interface. It can ultimately correct the converter valve data sent to the real-time digital simulation platform by controlling the interface chassis, and can also monitor the operation of the interface chassis.

[0058] b. The debugging workstation is equipped with powerful control capabilities:

[0059] 1) The fault types of the converter valve model sent by the real-time digital simulation platform to the core board of the interface chassis are too few and the fault types are significantly different from the fault types of the actual converter valve sub-modules in the flexible DC engineering. The location and fault type of the faulty sub-module in the converter valve can be manually set through the human-machine interface of the debugging workstation.

[0060] 2) After setting the submodule fault through the human-machine interface of the debugging workstation, the interface board of the interface chassis reports the subsequent related messages according to the fault message generation order of the converter valve submodule of the flexible DC engineering, and performs the interlocking and discharge control process on the submodule in the converter valve model of the real-time numerical simulation platform.

[0061] 3) After the real-time digital simulation platform sends the submodule capacitor voltage to the interface chassis, the interface chassis can directly send VBC for routine VBC hardware closed-loop testing; the human-machine interface of the debugging workstation can also manually set the capacitor voltage value and duration of a certain or batch of submodules through the interface chassis, so as to quantitatively test the VBC converter valve overvoltage protection strategy, and continue to perform VBC testing without the converter valve model of the real-time numerical simulation platform.

[0062] 4) The human-computer interaction interface of the debugging workstation can set the program version number of the sub-module of the converter valve model in the real-time digital simulation platform, so as to test whether the VBC and sub-module program version number verification function in the valve base control equipment monitoring background is correct.

[0063] 5) The interface chassis can send the bridge arm current sent from the real-time digital simulation platform to the VBC for routine closed-loop testing. It can also set the bridge arm current value and duration through the human-machine interface of the debugging workstation to quantitatively test the VBC's converter valve bridge arm overcurrent protection strategy.

[0064] 6) The human-machine interface of the debugging workstation can be used to set quality abnormality faults in the bridge arm current communication protocol, thereby simulating bridge arm current measurement unit faults.

[0065] 7) Operations 1) to 6) above can all be performed through the human-machine interface of the debugging workstation on the interface chassis to reset the fault;

[0066] 8) The interface board of the interface chassis monitors the communication status with VBC in real time, the core board of the interface chassis monitors the high-speed communication status with the numerical simulation platform in real time, and the interface chassis can also monitor its own internal communication in real time. The above communication status can be displayed and alarmed in real time through the human-machine interface of the debugging workstation.

[0067] VBCs and interface chassis offer flexible placement options. A typical application involves placing the bridge arm segment control chassis of valve-based control equipment and the corresponding interface chassis adjacent to each other within the same rack. This reduces requirements on fiber length and laying schemes, effectively lowering the workload and difficulty of test platform setup, while significantly reducing setup costs. Figure 3 As shown;

[0068] It can be adapted to RTDS / RT-LAB / HYPERSIM or other real-time digital simulation platforms. After changing the simulation platform, only the software of the interface chassis needs to be changed.

[0069] The interface device proposed in this invention for connecting valve base control equipment and digital simulation platform has the following advantages:

[0070] (1) A brand-new interface chassis was designed and equipped with a debugging workstation, which can realize the conversion between the communication protocol of the engineering sub-module and the communication protocol of the real-time digital simulation platform, and can easily set the sub-module fault type, sub-module capacitor voltage, sub-module program version number, and bridge arm current.

[0071] (2) By simulating the submodule fault types under different working conditions through the debugging workstation of the interface chassis, it is possible to test whether the action logic of the valve control for different working conditions and different submodule faults meets the design requirements.

[0072] (3) By simulating submodule bypass, overcurrent, high voltage and other abnormalities through the debugging workstation of the interface chassis, the protection actions such as valve-controlled bypass redundancy, dynamic submodule rated voltage modulation, overall overvoltage, and overall overcurrent can be tested.

[0073] (4) By setting the value and duration of the bridge arm current through the interface chassis, the action speed of the valve-controlled protection can be quantitatively tested.

[0074] (5) It can be used in conjunction with other special tests to comprehensively test the correctness of the valve control logic;

[0075] (6) Only the software program of the interface chassis needs to be modified to adapt to the different communication interface requirements in different flexible straight-line projects;

[0076] (7) When the designed interface chassis is the same as the VBC chassis hardware board, the complexity of hardware version maintenance during the debugging process can be reduced, and the R&D cost of hardware equipment can also be reduced.

[0077] Example 2:

[0078] The present invention also provides a testing method for the interface device in embodiment 1, such as... Figure 4 As shown, it includes:

[0079] Step 1: The debugging workstation sends a control command to the interface chassis to correct the status data sent by the converter valve model from the digital simulation platform;

[0080] Step 2: The interface chassis reconciles the differences in communication rate, communication frame format, and communication cycle between the valve base control device and the digital simulation platform, and modifies the converter valve status information and protocol sent by the converter valve model of the digital simulation platform according to the control instructions of the debugging workstation, and then simulates the fault type and / or abnormality of the converter valve submodule according to the control instructions.

[0081] The debugging workstation sends control commands to the interface chassis to correct the status data sent by the converter valve model from the digital simulation platform, including:

[0082] The debugging workstation sends control commands to the core board of the interface chassis via a human-machine interface to set the location and fault type of the faulty converter valve submodule in the converter valve model, the program version number of the converter valve submodule, and the value and duration of the bridge arm current. It is also used to send control commands to the interface chassis to set the capacitor voltage value and duration of one or more converter valve submodules.

[0083] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0084] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0085] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0086] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0087] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of the claims of the present invention pending approval.

Claims

1. An interface device for connecting a valve base control device and a digital simulation platform, characterized in that, include: Interconnected interface chassis and debugging workstations; The interface chassis is connected to the valve base control device and the digital simulation platform, respectively. The debugging workstation is used to send control commands to the interface chassis to correct the status data sent by the converter valve model of the digital simulation platform. The interface chassis is used to reconcile the differences in communication rate, communication frame format, and communication cycle between the valve base control device and the digital simulation platform; it is also used to modify the converter valve status information and protocol sent by the converter valve model of the digital simulation platform according to the control instructions of the debugging workstation, thereby simulating the fault type and / or abnormality of the converter valve submodule; The interface chassis includes: a core board, and multiple interface boards connected to the core board; The multiple interface boards are connected to the valve base control device and are used to simulate the communication protocol, communication timing and fault information reporting timing after the converter valve submodule of the flexible DC transmission project is faulty, and send them to the core board. The core board is connected to the debugging workstation and the digital simulation platform respectively. It is used to send the converter valve status information sent by the converter valve model of the digital simulation platform and the control command of the debugging workstation to the interface board, and merge the data sent by the interface board. Then, it modifies the converter valve status information of the converter valve model of the digital simulation platform and forwards the protocol to the interface board according to the control command of the debugging workstation. The interface board includes: The first receiving module is used to receive downlink communication data frames sent by the valve base control device, and data sent by the converter valve model of the digital simulation platform transmitted by the core board; The analog transmission module is used to transmit downlink communication data frames sent by the valve base control device received by the first receiving module to the core board, and to receive uplink communication data frames sent by the converter valve model of the digital simulation platform transmitted by the core board. It simulates the communication protocol, communication timing and fault information reporting timing after the converter valve submodule of the flexible DC transmission project between the valve base control device and the converter valve submodule, and transmits them to the valve base control device. The core board includes: a second receiving module, a modulation module, and an encoding module that are interconnected. The second receiving module is used to receive the converter valve status information sent by the converter valve model of the digital simulation platform, the data transmitted by the interface board, and the control commands issued by the debugging workstation. The encoding module is used to re-encode the converter valve status information sent by the converter valve model of the digital simulation platform according to the actual communication data in the flexible DC project, and send it to the interface board; wherein, the communication data includes: communication rate, communication frame format and communication period; The harmonization module is used to harmonize the differences in communication rate, communication frame format, and communication cycle between the valve base control device and the digital simulation platform, and send the harmonized status information to the interface board, and send the harmonized downlink communication data frame to the digital simulation platform. The control module is used to modify the converter valve status information and protocol sent by the converter valve model of the digital simulation platform, which has been re-encoded by the encoding module, according to the control commands issued by the debugging workstation. The debugging workstation includes a human-computer interaction interface; The human-machine interface is connected to the core board. The debugging workstation sends control commands to the core board based on the human-machine interface to set the location and fault type of the converter valve sub-module that has failed in the converter valve model, the program version number of the converter valve sub-module, and the value and duration of the bridge arm current. It is also used to send control commands to the interface chassis to set the capacitor voltage value and duration of a single or batch of converter valve sub-modules.

2. The device as described in claim 1, characterized in that, The uplink communication data frame includes: submodule capacitor voltage, detailed submodule internal fault / status information, IGBT on / off status, and submodule central control board program version number; The downlink communication data frame includes converter valve protection enable, protection threshold adjustment enable, and submodule control commands.

3. The device as described in claim 1, characterized in that, The status information includes: submodule capacitor voltage, fault status of some device levels, and bridge arm current.

4. The device as described in claim 1, characterized in that, The valve base control device and the interface board of the interface chassis use a communication rate of Mbps and a communication cycle of 100us or 50us. The core board and the digital simulation platform use a communication rate of Gbps and a communication cycle of 2.5us, 10us, 20us or 50us.

5. The device as described in claim 1, characterized in that, The interface chassis is connected to the valve base control equipment and the real-time digital simulation platform via optical fiber.

6. A method for testing using an interface device for connecting a valve base control device and a digital simulation platform as described in any one of claims 1-5, characterized in that, include: The debugging workstation sends control commands to the interface chassis to correct the status data sent by the converter valve model on the digital simulation platform. The interface chassis reconciles the differences in communication rate, communication frame format, and communication period between the valve base control device and the digital simulation platform, and modifies the converter valve status information and protocol sent by the converter valve model of the digital simulation platform according to the control instructions of the debugging workstation, and then simulates the fault type and / or abnormality of the converter valve submodule according to the control instructions.

7. The method as described in claim 6, characterized in that, The debugging workstation sends control commands to the interface chassis to correct the status data sent by the converter valve model from the digital simulation platform, including: The debugging workstation sends control commands to the core board of the interface chassis via a human-machine interface to set the location and fault type of the faulty converter valve submodule in the converter valve model, the program version number of the converter valve submodule, and the value and duration of the bridge arm current. It is also used to send control commands to the interface chassis to set the capacitor voltage value and duration of one or more converter valve submodules.

Images