Testing method and testing system

Abstract

A testing method and a testing system. The testing method is applied to a testing apparatus for testing a control system of a power device. The power device is configured such that the control system is connected to N electrical sub-modules (11); and the electrical sub-modules (11) each comprise a sub-controller (03) and a power sub-module connected to the sub-controller (03). The testing method comprises: a testing apparatus acquires a sub-module control instruction issued by a control system, and acquires actual electrical data of power sub-modules of electrical sub-modules (11), wherein the actual electrical data is data obtained by sub-controllers (03) controlling the power sub-modules on the basis of the sub-module control instruction; and finally, the testing apparatus transmits the actual electrical data and the sub-module control instruction to a simulation system, such that the simulation system simulates operation of the power sub-modules so as to generate test data, thereby implementing end-to-end testing of the control system of the power device.

Description

A testing method and a testing system

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 8, 2024, with application number 202410178165.1 and invention name “A testing method and testing system”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of power equipment, and in particular provides a testing method and a testing system. Background Art

[0003] With the rapid development of renewable energy and the intelligentization of power systems, high-voltage direct-mounted power equipment has become a key component of power systems. For example, high-voltage direct-mounted energy storage systems store electrical energy as chemical energy and then release it back into electrical energy when needed, balancing power system loads, improving power quality, and supporting the integration of renewable energy.

[0004] However, high-voltage, direct-mounted power equipment has multiple control levels and complex interfaces. Therefore, a dynamic test system must be built before shipment to simulate on-site operating conditions and conduct functional performance tests on the power equipment's control systems. However, the high voltage levels, high power levels, and bulky primary equipment of high-voltage, direct-mounted power equipment make it difficult to build a complete, fully physical test system within the factory.

[0005] Although the industry has adopted virtual simulation test systems to test high-voltage direct-mounted power equipment, the limited interfaces of the virtual simulation test systems have led to technical problems such as incomplete test links.

[0006] Application Contents

[0007] The purpose of this application is to provide a testing method and a testing system, which aims to solve the technical problems that it is difficult to build a complete practical testing system for current high-voltage direct-hanging power equipment due to its large size and complex functions, and the virtual simulation testing system using existing technology cannot conduct comprehensive testing.

[0008] According to a first aspect of an embodiment of the present application, a testing method is provided. The testing method is applied to a testing device for testing a control system of an electric power device. The electric power device is configured such that the control system is connected to N electrical sub-modules, each electrical sub-module including a sub-controller and a power sub-module connected to the sub-controller. The testing method includes:

[0009] Obtaining submodule control instructions issued by the control system;

[0010] Acquiring actual electrical data of a power submodule of the electrical submodule, wherein the actual electrical data is data obtained by the subcontroller controlling the power submodule based on the submodule control instruction;

[0011] The actual electrical data and the submodule control instructions are transmitted to the simulation system, so that the simulation system simulates the operation of the power submodule to generate test data.

[0012] By adopting the technical solution of the first aspect above, the testing device is configured to simulate the interface characteristics of the power sub-module. The testing device can obtain the actual electrical data collected by the sub-controller of the electrical sub-module. After the simulation system obtains the actual electrical data and sub-module control instructions, it can complete the simulation test of the power sub-module of the electrical sub-module, thereby solving the problem of incomplete test link caused by the limited number of interfaces of the simulation test system in the prior art, and can realize full-link testing of the control system of the power equipment.

[0013] In some embodiments, the electrical submodule includes a first electrical submodule, the test device includes a first test device, and the submodule control instruction includes a first control instruction;

[0014] The testing device acquires actual electrical data of the power submodule of the electrical submodule, including:

[0015] The first testing device acquires actual electrical data of the first power submodule of the first electrical submodule;

[0016] The test device transmits the actual electrical data to the simulation system, so that the simulation system simulates the operation of the power submodule to generate test data, including:

[0017] The first test device transmits the actual electrical data and the first control instruction to the simulation system, so that the simulation system simulates the operation of the first power sub-module to generate first test data.

[0018] By adopting the above technical solution, the test device can be composed of one test simulation device, or can be composed of multiple test simulation devices that cooperate with each other to realize the function, and can respond to different application scenarios more flexibly.

[0019] In some embodiments, the electrical submodule further includes a second electrical submodule, the testing device further includes a second testing device, and the submodule control instructions further include a second control instruction; the second testing device is configured with a virtual submodule that simulates interface characteristics of the subcontroller; and the testing method further includes:

[0020] The second testing device enables the virtual submodule to perform simulation control based on the second control instruction to obtain simulated electrical data of the second power submodule of the second electrical submodule;

[0021] The test device transmits the actual electrical data to the simulation system so that the simulation system simulates the operation of the power submodule to generate test data, and further includes:

[0022] The second test device transmits the simulated electrical data and the second control instruction to the simulation system, so that the simulation system simulates the operation of the second power sub-module to generate second test data.

[0023] By adopting the above-mentioned technical solution, if the number N of electrical sub-modules of the power equipment is too large, a small number of sub-controllers of the first electrical sub-modules can be connected to the simulation system through the first test device; at the same time, the vast majority of the remaining electrical sub-modules are used as the second electrical sub-modules, and the second electrical sub-modules are not connected to the first test device, but the interface characteristics of the second electrical sub-module are simulated through the second test device. This not only solves the current technical problem of difficult simulation testing caused by the large number of electrical sub-modules of high-voltage direct-hanging power equipment, but also enables more comprehensive testing without increasing hardware costs.

[0024] In some embodiments, the step of transmitting the actual electrical data and the first control instruction by the first testing device to the simulation system includes:

[0025] The first test device transmits the actual electrical data and the first control instruction to the second test device, and the second test device transmits the actual electrical data and the first control instruction to the simulation system.

[0026] By adopting the above technical solution, the interface of the simulation system does not need to be directly connected to all the electrical sub-modules. Instead, the interface of the simulation system indirectly obtains the actual electrical data of each electrical sub-module through the second test device, further reducing the hardware cost.

[0027] In some embodiments, after the step of simulating the operation of the power submodule by the simulation system to generate test data, the testing method further includes:

[0028] The second test device receives the test data fed back by the simulation system and transmits the test data to the control system, so that the control system generates new sub-module control instructions based on the test data; wherein the new sub-module control instructions are used to be sent to each of the first test device and the second test device.

[0029] By adopting the above-mentioned technical solution, after the simulation system generates test data, it will feed the test data back to the second test device, and then the second test device will upload the test data to the control system; the control system will produce new sub-module control instructions based on the fed-back test data, forming a closed-loop control, ensuring that the control system of the power equipment can issue correct control instructions to continuously test the electrical sub-modules.

[0030] In some embodiments, the power submodule is configured with a power module; the power submodule includes a power module controller;

[0031] The testing device acquires actual electrical data of the power submodule of the electrical submodule, including:

[0032] The testing device obtains power data of a power module controller of a power submodule of an electrical submodule.

[0033] Since conventional technology performs factory verification on electrical sub-modules with power modules separately, it cannot coordinate with the control system logic of the power equipment in real time, and there is a hidden danger of insufficient testing. By adopting the above-mentioned technical solution, the test system can perform online simulation testing on electrical sub-modules with power modules separately in real time, which can achieve more comprehensive testing.

[0034] In some embodiments, the power submodule is further configured with a battery; the power submodule further includes a battery management system;

[0035] The testing device acquires power data of a power module controller of a power submodule of an electrical submodule, including:

[0036] The first testing device obtains power data of a power module controller of the first electrical submodule and battery data of a battery management system.

[0037] Since the controller of the energy storage device in the prior art is connected to a large number of batteries in the electrical sub-module and the BMS system interface of the battery management system is relatively complex, the dynamic model test of the energy storage system in the prior art generally does not include the battery management system. By adopting the above technical solution, the first testing device can complete the connection between the power module controller and the battery management system within a single electrical sub-module, and can test the electrical functions of the power module controller and the battery management system within the electrical sub-module. Compared with the testing solution of the prior art, this embodiment can more fully test the electrical functions of the control system of the energy storage device.

[0038] In some embodiments, after the step of simulating the operation of the first power submodule by the simulation system to generate first test data, the testing method further includes:

[0039] The first testing device acquires the first testing data;

[0040] The first testing device compares the first testing data with the actual engineering information to obtain a comparison result, and sends the comparison result to the human-computer interaction device for display.

[0041] By adopting the above-mentioned technical solution, after obtaining the first test data fed back by the simulation system, the first test device can determine whether the first test data is consistent with the actual engineering information, and finally send the comparison result to the human-computer interaction device for display for the tester to judge, which provides work convenience for the tester.

[0042] In some embodiments, the testing method further comprises:

[0043] The second testing device determines whether the submodule control instruction meets the preset instruction standard, and generates an alarm message when the submodule control instruction does not meet the preset instruction standard.

[0044] By adopting the above technical solution, the second testing device has the function of automatically detecting whether the submodule control instructions issued by the control system meet the design requirements, which provides convenience for the staff.

[0045] In some embodiments, the testing method further comprises:

[0046] The second testing device tests the power submodule according to different fault types to obtain fault test data;

[0047] The second testing device transmits the fault test data to the control system to obtain a test response of the control system to the fault test data;

[0048] The second testing device determines a fault test result according to the test response.

[0049] By adopting the above technical solution, the second test device has the function of automatic fault insertion testing, which provides convenience for staff and helps to ensure the safe and stable operation of the system.

[0050] In a second aspect, an embodiment of the present application provides a test system for testing a control system of an electric power device, wherein the electric power device is configured such that the control system is connected to N electrical sub-modules, wherein the electrical sub-modules include sub-controllers and power sub-modules connected to the sub-controllers; the test system includes a simulation system and a test device that maintains a signal connection with the simulation system;

[0051] The testing device is used to obtain actual electrical data collected by the sub-controller based on the sub-module control instructions, and transmit the actual electrical data and the sub-module control instructions to the simulation system; wherein the sub-module control instructions are issued by the control system;

[0052] The simulation system is used to simulate the operation of the power submodule to generate test data.

[0053] By adopting the technical solution of the second aspect above, the testing device is configured to simulate the interface characteristics of the power sub-module. The testing device can obtain the actual electrical data collected by the sub-controller of the electrical sub-module. After the simulation system obtains the actual electrical data and sub-module control instructions, it can complete the simulation test of the power sub-module of the electrical sub-module, thereby realizing full-link testing of the control system of the power equipment.

[0054] In some embodiments, the N electrical sub-modules include a first electrical sub-modules and (Na) second electrical sub-modules, wherein N is greater than a, and both N and a are positive integers;

[0055] The testing device further comprises a first testing device and a second testing device;

[0056] The N electrical submodules include a first electrical submodule having a first subcontroller and a first power submodule; each first electrical submodule is configured with one first testing device;

[0057] The second test device is configured with a virtual sub-module having the same interface characteristics as the sub-controller of the electrical sub-module, and the virtual sub-module is used to simulate the electrical characteristics of the second electrical sub-module.

[0058] By adopting the above-mentioned technical solution, if the number N of electrical sub-modules of the power equipment is too large and the number a is much smaller than N, a small number a of the electrical sub-modules can be used as the first electrical sub-module, and the sub-controller of the first electrical sub-module can be connected to the simulation system through the first test device and the second test device; at the same time, the remaining majority (na) of the electrical sub-modules are used as the second electrical sub-module, and the second electrical sub-module is not connected to the first test device, but the interface characteristics of the second electrical sub-module are simulated through the second test device. This not only solves the current technical problem of difficult simulation testing caused by the large number of electrical sub-modules of high-voltage direct-hanging power equipment, but also enables more comprehensive testing without increasing hardware costs.

[0059] In some embodiments, one end of the second test device is connected to the simulation system, and the other end of the second test device is connected to one or more of the first test devices, so that the first test device is connected to the simulation system through the second test device.

[0060] By adopting the above-mentioned technical solution, the first electrical sub-module of the power equipment is equipped with a first test device, and the second test device is connected to one or more first test devices, which is used to indirectly connect the electrical sub-module interface of the energy storage system to the simulation system one-to-one, and complete the conversion of the number of interfaces and protocols, thereby overcoming the technical problem in the prior art that it is difficult to connect the physical sub-module to the simulation system due to the limited number of simulation system interfaces.

[0061] In some embodiments, the first test device includes an analog interface; the power submodule includes a power module controller and a battery management system;

[0062] The first testing device is further configured to collect actual electrical data of the power module controller and the battery management system of the first electrical sub-module based on the analog interface.

[0063] Since the controller of the energy storage device in the prior art is connected to a large number of batteries in the electrical sub-module and the BMS system interface of the battery management system is relatively complex, the dynamic model test of the energy storage system in the prior art generally does not include the battery management system. By adopting the above technical solution, the first testing device can complete the connection between the power module controller and the battery management system within a single electrical sub-module, and can test the electrical functions of the power module controller and the battery management system within the electrical sub-module. Compared with the testing solution of the prior art, this embodiment can more fully test the electrical functions of the control system of the energy storage device.

[0064] In some embodiments, the analog interface includes at least an electronic switch unit interface, a bypass switch unit interface, and a battery unit interface;

[0065] The first testing device is configured to collect power data collected by the power module controller based on the electronic switch unit interface and the bypass switch unit interface;

[0066] The first testing device is configured to collect battery data collected by the battery management system based on the battery cell interface.

[0067] By adopting the above-mentioned technical solution, an analog interface including an electronic switch signal, a bypass switch signal and a battery cell interface is provided for the first test device, which can complete the characteristic simulation of the power device inside the electrical sub-module, and then simulate the operating conditions of the power module and battery part of the high-voltage direct-mounted energy storage system, so that the first test device can emit electrical data signals consistent with the actual project, thereby helping to complete the test more comprehensively. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0069] FIG1 is a structural block diagram of a high-voltage direct-mounted energy storage system in the prior art;

[0070] FIG2 is a schematic diagram of a high-voltage direct-mounted energy storage system in the prior art tested using a real-time digital simulation system;

[0071] FIG3 is a schematic diagram of the structure of a test system provided in Example 1 of the present application;

[0072] FIG4 is another structural diagram of the test system provided in Example 1 of the present application;

[0073] FIG5 is a schematic diagram of the internal architecture of an entity submodule in a possible implementation manner provided by the present application;

[0074] FIG6 is a flow chart of a testing method provided by the present application;

[0075] FIG7 is a flow chart of another testing method provided in this application.

[0076] Description of reference numerals: energy storage system-10, physical electrical submodule / first electrical submodule-11, simulation system-20, first test device-01, second test device-02, sub-controller-03, power module controller-031, battery management system-032. DETAILED DESCRIPTION

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0078] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0079] It will also be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0080] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), unless otherwise clearly and specifically defined.

[0081] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0082] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0083] High-voltage, direct-mounted power equipment has become a critical component of power systems. These devices feature multiple control levels and complex interfaces, necessitating the construction of dynamic simulation test systems before shipment to simulate on-site operating conditions and conduct functional performance tests on the equipment's control systems. For example, high-voltage, direct-mounted energy storage systems integrate distributed energy storage units into submodules, offering advantages such as high modularity, excellent harmonic characteristics, and low equivalent switching frequency. This facilitates the implementation of large-capacity energy storage systems exceeding 100 megawatts.

[0084] In the related art, due to the high voltage level and high power of the secondary system of the high-voltage direct-mounted energy storage equipment, and the large size of the equipment of the high-voltage direct-mounted energy storage system, it is difficult to build a complete full-physical test system in the factory. Therefore, virtual testing and simulation methods have become more and more popular. The real-time digital simulation system (RTDS) is favored because it can simulate the behavior of the power system with high fidelity, and has become an effective tool for testing and verifying the performance of the secondary system of high-voltage direct-mounted energy storage equipment. At present, high-voltage direct-mounted energy storage systems generally use RTDS for dynamic model testing. As shown in Figure 1, the high-voltage direct-mounted energy storage system of the prior art usually has multiple (physical) electrical sub-modules, and the controller of the electrical sub-module is generally tested on the running test system along with the power module.

[0085] However, to date, there is a lack of a real-time simulation testing method for the control system of full-link power equipment that can comprehensively evaluate the performance of high-voltage direct-mounted energy storage systems, including their dynamic response in the power system, the effectiveness of the control strategy, and the impact of power system interconnection.

[0086] In order to alleviate the above problems, an embodiment of the present application proposes a test system, which is used to test the control system of an electric power equipment. The electric power equipment can be an energy storage system or a flexible direct current system; the electric power equipment can also be a high-voltage direct-hanging electric power equipment, specifically a high-voltage direct-hanging energy storage system.

[0087] The power equipment is configured such that the control system is connected to N electrical sub-modules, where N is a positive integer, and the electrical sub-module includes a sub-controller and a power sub-module connected to the sub-controller; the test system includes a simulation system and a test device that maintains a signal connection with the simulation system; in a specific implementation, the electrical sub-module can be a high-voltage direct-hanging power equipment that utilizes modular multi-level technology to distribute and integrate power electronic units in sub-modules, and has the advantages of high modularity, good harmonic characteristics, and low equivalent switching frequency.

[0088] The power submodule refers to a functional module unit composed of power equipment, which performs power functions and forms an electrical submodule with its control module. The power submodule can specifically include a commutation module, an energy storage module, an inverter module, etc.

[0089] The sub-controller is the sub-module controller (SMC), which is the control module of the electrical sub-module. The control system refers to the low-voltage electrical equipment used to monitor, control, measure, regulate, and protect the operating conditions of the power equipment. Specifically, it includes measuring instruments, primary equipment controls, operating status monitoring signals and automated monitoring systems, relay protection and safety automatic devices, and communication equipment.

[0090] In a specific implementation, the control system can be a valve-controlled system. For example, it can be a system that includes a controllable shunt reactor regulation control device with a thyristor or other power electronic device as the main control element, and is connected to a control winding to control the output capacity of the controllable shunt reactor.

[0091] The testing device is used to obtain actual electrical data collected by the sub-controller based on the sub-module control instructions, and transmit the actual electrical data and the sub-module control instructions to the simulation system; wherein the sub-module control instructions are issued by the control system;

[0092] Among them, the test device can be composed of a sub-module test simulation device; the test device can also be composed of two sub-module test simulation devices, which realize the above functions by cooperating with each other; for different application scenarios, the components of the test device will be different, and the specific implementation plan can refer to the specific examples below.

[0093] In addition, it should be noted that if the test device is composed of a sub-module test simulation device, then the test device can directly establish a wiring harness connection with the interface of the simulation system through optical fiber; if the test device is composed of two sub-module test simulation devices, then the two sub-module test simulation devices can be configured according to actual conditions to directly establish a wiring harness connection with the interface of the simulation system through optical fiber lines, or one of the sub-module test simulation devices can be set not to directly establish a wiring harness connection with the simulation system according to actual conditions, and the data that needs to be interacted can be forwarded to the simulation system by the other sub-module test simulation device that has established a wiring harness connection with the simulation system.

[0094] The simulation system is used to simulate the operation of the power submodule to generate test data.

[0095] The simulation system of the present application can preferably be a real-time digital simulation system (RTDS). Compared with conventional non-real-time simulation tools, RTDS is configured to use parallel processing technology. RTDS can run at a step size of 50μs to simulate large-scale power systems in real time, ensuring the real-time nature of the test.

[0096] The beneficial effects of the present application are that: the testing device is configured to simulate the interface characteristics of the power sub-module, the testing device can obtain the actual electrical data collected by the sub-controller of the electrical sub-module, and the simulation system can complete the simulation test of the power sub-module of the electrical sub-module after obtaining the actual electrical data and sub-module control instructions, thereby realizing full-link testing of the control system of the power equipment.

[0097] In order to illustrate the technical solution proposed in this application, the following is a description through specific embodiments:

[0098] Example 1

[0099] Refer to Figure 2, which is a system architecture diagram of a high-voltage direct-mounted energy storage system in the prior art that is tested using a real-time digital simulation system. When the existing high-voltage direct-mounted energy storage system products are tested in the factory, the real-time digital simulation system RTDS is used to build a test environment for the test. By building an RTDS model to simulate the operating conditions of the AC and DC power grids and the operating conditions of the direct-mounted energy storage power modules and battery parts, as shown in Figure 1, due to the large number of electrical sub-modules in the high-voltage direct-mounted energy storage system and the limited number of interfaces of the RTDS simulation system, it is difficult to connect the electrical sub-modules of the high-voltage direct-mounted energy storage system to the RTDS simulation system. Therefore, the test of the energy storage system is generally not connected to the sub-modules, but directly connected to the real-time digital simulation system RTDS.

[0100] In order to overcome the technical defects stated above, such as the difficulty in building a complete practical test system due to the large size and complex functions of high-voltage direct-mounted power equipment, and the inadequate virtual simulation test system of the existing technology, which makes it impossible to conduct comprehensive tests on high-voltage direct-mounted power equipment, a control system applied to power equipment is proposed; the purpose is to provide a more comprehensive performance evaluation for the development, improvement and integration of high-voltage direct-mounted power equipment. The technical solution of the test system of this application can help relevant personnel better understand and optimize the operating status of high-voltage direct-mounted power equipment in the power system, thereby enabling the power system to operate more efficiently and reliably.

[0101] Please refer to Figure 3, which is a structural block diagram of a test system for a control system applied to power equipment provided in this application. The power equipment may be an energy storage system or a flexible direct current system.

[0102] This embodiment uses a high-voltage direct-mounted energy storage system as an example of the power equipment of this application.

[0103] As shown in FIG3 , the test device of this embodiment is divided into a first test device 01 and a second test device 02 (i.e., the test device of this embodiment is composed of two sub-module test simulation devices); the N electrical sub-modules include a first electrical sub-module 11 having a first sub-controller 03 and a first power sub-module; each first electrical sub-module is configured with one first test device 01;

[0104] The power equipment is configured such that the control system 10 is connected to N electrical sub-modules, each of which has a sub-controller 03; the plurality of electrical sub-modules includes a first electrical sub-module 11;

[0105] As shown in Figure 3, in this embodiment, when the number N is small or not particularly large (for example, the number of a does not exceed 20 and is considered "small", and the number of a is between 20 and 120 and is considered "not particularly large"), then a=N can be configured, that is, each electrical sub-module is a first electrical sub-module 11, that is, all N electrical sub-modules of the power equipment can be connected one-to-one with the first test device 01 as the first electrical sub-module 11, that is, each electrical sub-module is configured with a first test device 01.

[0106] One end of the second test device 02 is connected to the simulation system 20, and the other end of the second test device 02 is connected to one or more first test devices 01, so that the first test device 01 is connected to the simulation system 20 through the second test device 02;

[0107] On the basis of establishing that each electrical submodule is equipped with a first test device 01, the first test device 01 is connected to the second test device 02, and the second test device 02 is connected to the simulation system, so that all physical electrical submodules can be connected to the simulation system 20;

[0108] It should be noted that in some special scenarios, for example, when the number N of electrical sub-modules is not greater than the number of interfaces (connected to the electrical sub-modules) of the simulation system 20, the first test device 01 may also be configured to directly establish a wiring harness connection with the simulation system 20.

[0109] If the total number N of electrical submodules is greater than the number of interfaces (connecting electrical submodules) of the simulation system 20, the first test device 01 is preferably configured to establish a wiring harness connection with the second test device 02 to form a technical solution for indirectly maintaining a signal connection with the simulation system 20;

[0110] It is understandable that the number of interfaces of the simulation system in the prior art is relatively limited. In a specific implementation, in order to reduce hardware costs and the pressure of system operation, a second test device 02 can be set up to connect with multiple first test devices 01, that is, the connection relationship between the electrical sub-module and the first test device 01 is a one-to-one relationship; and the connection relationship between the second test device 02 and the first test device 01 is a one-to-many relationship. In this way, the electrical sub-module interface of the energy storage system can be indirectly connected to the simulation system one-to-one, completing the conversion of the number of interfaces and protocols.

[0111] In addition, the RTDS of this embodiment can be a model and simulation algorithm for simulating various components of the power system constructed on the basis of standard technology of the electromagnetic transient analysis software package, thereby ensuring the accuracy of the test.

[0112] The first test device 01 is configured to simulate the interface characteristics of the first power submodule to obtain actual electrical data collected by the first sub-controller 03 and transmit the actual electrical data to the simulation system;

[0113] The second testing device 02 is configured to simulate the interface characteristics of the sub-controller 03 to collect the sub-module control instructions issued by the control system 10 and send the sub-module control instructions to the simulation system 20 .

[0114] It is understandable that the control system of power equipment usually issues submodule control instructions to the connected electrical submodules at microsecond intervals. The mechanism for issuing these submodule control instructions is pre-configured by the staff through the setup program. The control system also adjusts or regenerates submodule control instructions based on the test data fed back by the test system.

[0115] The test system of this embodiment can only set up one second test device 02. Of course, if the number of physical sub-modules of the control system 10 is too large in the actual test scenario, multiple second test devices 02 can be set up as appropriate. Each second test device 02 is connected to multiple first test devices 01, and each second test device 02 is used to forward data (including sub-module control instructions) that need to be interacted between multiple first test devices 01 and the simulation system 20, so that the simulation system 20 completes the test of the electrical function of the sub-controller 03 of the first electrical sub-module.

[0116] In a specific implementation, each first test device is configured with a simulation interface, and each first test device collects the actual electrical data of its first electrical sub-module through the simulation interface; and the second test device forwards the sub-module control instructions and actual electrical data of each first electrical sub-module to the simulation system, so that the simulation system simulates the operation of the second power sub-module based on the actual electrical data and the sub-module control instructions to generate test data.

[0117] In addition, optical fiber can be preferably used to transmit test data between the first test device 01 and the second test device 02 to adapt to the scenario of high-voltage data transmission. The external interface of the second test device 02 can all be optical fiber interfaces. In this embodiment, the external optical fiber interfaces of the second test device 02 can include three types:

[0118] The first type of optical fiber interface is an optical fiber interface that provides data communication with the energy storage system 10. There are a large number of first type optical fiber interfaces. Each first type optical fiber interface has a bidirectional transmission function of sending and receiving, and can send test data to the energy storage system 10;

[0119] The second type of optical fiber interface is an optical fiber interface for communicating data with the RTDS simulation system 20. The second type of optical fiber interface is used to send test data to the RTDS model in the simulation system 20 and also to obtain simulation instructions from the RTDS model in the simulation system 20.

[0120] The third type of optical fiber interface is an optical fiber interface that provides data exchange with the first test device 01 and is used to forward data that needs to be exchanged between the first test device 01 and the RTDS simulation system 20 .

[0121] The second test device 02 of this embodiment first realizes the conversion of the interface protocol, indirectly converting the interface of the energy storage system 10 and its physical electrical submodule in the actual project into the interface of the RTDS simulation system 20, and completing the data interaction between the energy storage system 10C and the RTDS simulation system 20.

[0122] It should be emphasized that the first testing device 01 of this embodiment has the function of simulating the characteristics of the sub-controller 03 inside the physical electrical sub-module, and can obtain electrical data related to the electrical functions of the sub-controller 03 .

[0123] It is understandable that the data transmitted between the electrical sub-modules are high-voltage signals (the voltage range of high-voltage signals is between several thousand volts and hundreds of thousands of volts. It is usually used for high-voltage parts in power transmission and electrical equipment), and the data actually simulated by the test system should be low-level signals. Therefore, the high-voltage signals in this embodiment need to be simulated by the model of the RTDS simulation system 20, so these signals of the second test device 02 need to be connected to the simulation system 20, so that the model of the simulation system 20 simulates the operation of the power sub-module according to the "sub-module control instructions and actual electrical data" to generate test results, and then the test results can be fed back to the second test device 02, and then the second test device 02 transmits the test results to the control system 10 to form a closed loop; the control system 10 produces new sub-module control instructions based on the feedback test results to form a closed-loop control.

[0124] The beneficial effect of this embodiment is that the first electrical sub-modules of the power equipment are all equipped with a first test device, and the second test device is connected to one or more first test devices, which is used to indirectly connect the electrical sub-module interfaces of the energy storage system to the simulation system one-to-one, complete the conversion of the number of interfaces and protocols, and thus overcome the technical problem in the prior art that the physical sub-modules are difficult to connect to the simulation system due to the limited number of simulation system interfaces.

[0125] Example 2

[0126] Based on the test system of the first embodiment above, a second embodiment of the test system of the present application is proposed. The power device is configured such that the control system 10 is connected to N electrical sub-modules. In this embodiment, the N electrical sub-modules include a first electrical sub-modules and (Na) second electrical sub-modules, where n can be much larger than a (it can be understood that the total number N of electrical sub-modules is much larger than the number of interfaces of the simulation system 20), and both n and a are positive integers.

[0127] It is understandable that in this embodiment, if the number of physical electrical submodules of the power equipment is too large, if the controllers and battery management systems of all physical electrical submodules are connected to the simulation system RTDS, it will be difficult to set up in the factory due to the large number of physical electrical submodules. Therefore, in this embodiment 2, a small number of electrical submodules a can be used as the first electrical submodule, and the (first) sub-controller 03 of the first electrical submodule can be connected to the simulation system through the first test device and the second test device; at the same time, the remaining majority (na) of the electrical molecular modules can be used as the second electrical submodule, and the second electrical submodule is not connected to the first test device, but the electrical characteristics of the sub-controller 03 of the second electrical submodule are simulated through the second test device;

[0128] It should be emphasized that the second test device is configured with a virtual submodule having the same interface characteristics as the subcontroller 03 of the electrical submodule, and the virtual submodule is used to simulate the electrical characteristics of the second electrical submodule;

[0129] The second test device is configured to receive submodule control instructions issued by the control system. Based on the second control instructions, the second test device activates the virtual submodule for simulated control to obtain simulated electrical data of the second power submodule of the second electrical submodule. The simulated electrical data and the second control instructions are then transmitted to the simulation system, causing the simulation system to simulate the operation of the second power submodule to generate second test data. This allows the simulation system to indirectly test the electrical functions of each second electrical submodule without connecting to the individual second electrical submodules. This resolves the current technical issue of difficulty in simulation testing due to the large number of electrical submodules in high-voltage direct-mounted power equipment.

[0130] In addition, the second testing device can also indirectly perform a fault insertion test on each second electrical sub-module to verify the function of the control system of the power equipment.

[0131] This embodiment uses a combination of two sub-module simulation test devices to achieve the full-link test effect of the internal control of the power equipment and the physical electrical sub-module, and solves the problem that the test system is too large and difficult to build.

[0132] Example 3

[0133] Furthermore, based on the test systems of the above-mentioned embodiments 1 and 2, a third embodiment is proposed. The power submodule of this embodiment is configured with a power module. The power equipment can be a battery energy storage system, a compressed air energy storage system, or a gravity energy storage device, etc.

[0134] The power equipment of the third embodiment is described as a battery energy storage system. The power submodule is configured with a power module and a battery.

[0135] As shown in FIG4 , the sub-controller 03 of the electrical sub-module includes a power module controller 031 and a battery management system 032 ; wherein the battery management system is configured to control and manage the battery; and the power module controller is configured to control the power module of the electrical sub-module;

[0136] The first testing device 01 is connected to the power module controller 031 and the battery management system (BMS) 032 respectively, and is used to collect actual electrical data of the power module controller 031 and the battery management system 032.

[0137] It is understandable that due to the large number of batteries in the energy storage system in the prior art, the complex BMS system interface and the complex battery management system interface, the dynamic model test of the energy storage system in the prior art generally does not include the BMS system, resulting in the defect of insufficient testing.

[0138] This embodiment uses the first test device 01 to connect the power module controller 031 and the battery management system 032 inside a single physical electrical sub-module to the entire test system, thereby realizing the characteristic simulation of the power device inside the electrical sub-module. This helps to improve the defects of the existing technology of using virtual simulation test systems to test the controller of energy storage equipment, and assists testers to test the energy storage system more comprehensively.

[0139] Specifically, the power equipment of this embodiment is a high-voltage direct-hanging energy storage device. The control system 10 involved in the high-voltage direct-hanging energy storage device can be a valve control system (valve base controller, VBC) of a high-voltage direct-hanging energy storage. The valve control system VBC connects n (physical) electrical sub-modules. If the number n of electrical sub-modules of the energy storage device is too large, a small number of electrical sub-modules a can be used as the first electrical sub-module, and the power module controller and battery management system of the first electrical sub-module can be connected to the simulation system through the first test device and the second test device; at the same time, the remaining majority (na) of electrical molecular modules can be used as the second electrical sub-module. The second electrical sub-module is not connected to the first test device, but the electrical characteristics of the power module controller and battery management system of the second electrical sub-module are simulated through the second test device. In this way, the technical problem of difficulty in simulation testing caused by the large number of electrical sub-modules of the high-voltage direct-hanging energy storage system can be solved.

[0140] Each first test device is configured with a simulation interface, and each first test device collects the actual electrical data of the power module controller and battery management system of its first electrical sub-module through the simulation interface; and the second test device forwards the sub-module control instructions and actual electrical data of each first electrical sub-module to the simulation system, so that the simulation system generates first test data based on the actual electrical data and the sub-module control instructions.

[0141] The actual electrical data includes at least power data of the power module and battery data of the battery module. In a specific implementation, the analog interface includes at least an electronic switch unit interface, a bypass switch unit interface, and a battery unit interface.

[0142] The first testing device is configured to collect power data of the power module based on the electronic switch unit interface and the bypass switch unit interface;

[0143] Specifically, the electronic switch unit interface may be an IGBT (Insulate-Gate Bipolar Transistor) switch interface, which cooperates with the IGBT drive communication interface of the power module controller in FIG5 . The first test device 01 obtains an electronic switch signal from the power module controller through the electronic switch unit.

[0144] The bypass switch unit interface cooperates with the bypass trigger interface of the power module controller in FIG5 , and the first test device 01 obtains the bypass switch signal from the power module controller through the bypass switch unit interface;

[0145] In addition, the power module controller in FIG5 further includes a voltage sampling interface, through which the power module controller collects voltage data and current data of the first electrical submodule and transmits the voltage data and current data as electrical quantity signals to the first test device 01;

[0146] The first testing device 01 is further configured to collect battery data of the battery management system 032 based on the battery cell interface.

[0147] Specifically, the battery cell interface of the first test device 01 cooperates with the power interface and battery interface of the battery management system BMS in FIG5 ; as shown in FIG5 , the battery management system BMS has k battery interfaces, each of which is connected to a battery module (as shown in FIG5 , the battery module includes multiple groups of batteries), and the BMS is used to obtain battery data inside the battery module (power supply, current, power, battery protection signal, battery switch signal, etc. of each battery). The battery cell interface of the first test device 01 establishes a signal connection with the battery management system BMS via the CAN bus to obtain battery data inside the battery module;

[0148] In addition, as shown in Figure 4, the battery management system (BMS) 032 can also establish a signal connection with the power module controller 031. The battery management system BMS will transmit the current battery signal data inside the battery module to the power module controller, and the power module controller will then feed back the current battery signal data to the valve control system VBC (i.e., the control system 10). The valve control system VBC will adjust the sub-module control instructions based on the current battery signal data.

[0149] Furthermore, each (a in total) first test device 01 will send the sub-module control instructions, power data of the power module and battery data of the battery module issued by the valve control system VBC (control system 10) to the second test device 02, and the second test device 02 will forward the (a in total) sub-module control instructions and actual electrical data (power data and battery data) to the simulation system. After the simulation system obtains the power data and battery data of the first electrical sub-module, it can simulate the operating conditions of the power module and battery part of the first electrical sub-module of the high-voltage direct-mounted energy storage system, and then test the electrical function of the sub-controller of the first electrical sub-module according to the sub-module control instructions issued by VBC to generate the first test data.

[0150] Furthermore, the electrical characteristics of the battery modules and power modules of the remaining (na) second electrical submodules are simulated by the virtual submodule of the second testing device 02. The second testing device 02 collects simulated electrical data of the virtual submodule, and the simulated electrical data includes battery simulation data of the battery module and power simulation data of the power module.

[0151] The second test device is also used to receive the sub-module control instructions issued by the control system, and collect the simulated electrical data of the virtual sub-module, and send the sub-module control instructions and simulated electrical data to the simulation system. After the simulation system obtains the battery simulation data and power simulation data of the second electrical sub-module, it can simulate the operating conditions of the power module and battery part of the second electrical sub-module of the high-voltage direct-mounted energy storage system, and then test the electrical function of the sub-controller of the second electrical sub-module according to the sub-module control instructions issued by VBC to obtain the second test data. In this way, the simulation system can indirectly test the electrical function of each second electrical sub-module without connecting to each second electrical sub-module; this can solve the current technical problem of difficulty in simulation testing caused by the large number of electrical sub-modules in high-voltage direct-mounted energy storage equipment.

[0152] Example 4

[0153] Please refer to Figure 6, which is a flow chart of a test method provided by the present application. The test method of the fourth embodiment is used to test the control system of an electric power device. The test method of the fourth embodiment is controlled by a test device, that is, the electric power device is configured such that the control system is connected to N electrical sub-modules, and the electrical sub-module includes a sub-controller and a power sub-module connected to the sub-controller (for example, the power sub-module may specifically include a power module); the test system includes a simulation system and a test device that maintains a signal connection with the simulation system; the test method of this embodiment mainly includes:

[0154] Step S10, the test device obtains the submodule control instruction issued by the control system;

[0155] Step S20, the testing device acquires actual electrical data of the power submodule of the electrical submodule, wherein the actual electrical data is data obtained by the subcontroller controlling the power submodule based on the submodule control instruction;

[0156] In step S30 , the test device transmits the actual electrical data and the submodule control instructions to the simulation system, so that the simulation system simulates the operation of the power submodule to generate test data.

[0157] It is understandable that the control system of the power equipment usually continuously issues sub-module control instructions to the electrical sub-module connected to it. It can also be understood that the control system of the power equipment issues sub-module control instructions at time intervals of the microsecond level. The sub-controller of the electrical sub-module can obtain actual electrical data from controlling the power sub-module based on the sub-module control instructions, and the test device is configured to simulate the interface characteristics of the power sub-module to obtain the actual electrical data collected by the sub-controller based on the sub-module control instructions, and transmit the actual electrical data and the sub-module control instructions to the simulation system, so that the simulation system can simulate the operation of the power sub-module based on the actual electrical data and the sub-module control instructions to generate test data.

[0158] In addition, it should be noted that the sub-module control instructions issued by the control system can be received by the test device, and then forwarded by the test device to the sub-controller, and then the sub-controller controls the power sub-module based on the sub-module control instructions; of course, the control system can also directly issue the sub-module control instructions to the sub-controller of the electrical sub-module;

[0159] The mechanism for issuing the submodule control instructions is pre-configured by the staff through setting up a software program, and the control system will also adjust or regenerate the submodule control instructions based on the test data fed back by the test system.

[0160] The beneficial effect of the fourth embodiment of the present invention is that the testing device is configured to simulate the interface characteristics of the power sub-module, and the testing device can obtain the actual electrical data collected by the sub-controller of the electrical sub-module. After the simulation system obtains the actual electrical data, it can complete the simulation test of the power sub-module of the electrical sub-module, thereby realizing the full-link test of the control system of the power equipment.

[0161] Example 5

[0162] Please refer to FIG7 , which is a flow chart of the second testing method provided by the present application. The testing method of the fifth embodiment is controlled by the testing system of the second embodiment described above.

[0163] Based on the test method of the fourth embodiment above, a second embodiment of the test system of the present application is proposed, wherein the test device includes a first test device and a second test device, and correspondingly, the submodule control instruction includes a first control instruction and a second control instruction.

[0164] The N electrical submodules include a first electrical submodule and (Na) second electrical submodules; the first electrical submodule includes a first subcontroller and a first power submodule, and the second electrical submodule includes a second subcontroller and a second power submodule; the first subcontroller of each first electrical submodule is configured with one first test device;

[0165] The second test device is configured with a virtual sub-module having the same interface characteristics as the second sub-controller of the second electrical sub-module, and the virtual sub-module is used to simulate the electrical characteristics of each of the second electrical sub-modules;

[0166] Specifically, the testing method of this embodiment can only set up one second testing device. Of course, if the number of physical sub-modules of the power equipment controller in the actual testing scenario is large enough, multiple second testing devices can also be set up as appropriate. Each second testing device is connected to multiple first testing devices. Each second testing device is used to forward the interaction data required between multiple electrical sub-modules and the simulation system. These interaction data include sub-module control instructions and electrical data of the sub-controller of the electrical sub-module, so as to indirectly connect the electrical sub-module interface of the energy storage system to the simulation system one-to-one.

[0167] The power equipment of this embodiment is described using a high-voltage direct-mounted energy storage system as an example. In a specific implementation, the control system of this embodiment may be a valve control system. The submodule control instructions issued by the valve control system include a first control instruction and a second control instruction, wherein the first control instruction is for a first electrical submodule, and the second control instruction is for (na) second electrical submodules.

[0168] As shown in FIG7 , the testing method of this embodiment includes:

[0169] Step S20 of the fourth embodiment further includes:

[0170] Step S21, the first testing device obtains actual electrical data of the first power submodule of the first electrical submodule;

[0171] Accordingly, step S30 of the fourth embodiment further includes:

[0172] In step 31 , the first test device transmits the actual electrical data and the first control instruction to the simulation system, so that the simulation system simulates the operation of the first power submodule to generate first test data.

[0173] It is understandable that the first testing device has the function of simulating the characteristics of the sub-controller inside the physical electrical sub-module and is capable of obtaining electrical data related to the electrical functions of the sub-controller;

[0174] For the electrical sub-module of the energy storage system, its sub-controller includes a power module controller and a battery management system; the battery management system is configured to control and manage the battery; the power module controller is configured to control the power module of the electrical sub-module; the actual electrical data collected by the first testing device includes the power data of the power module controller of the first electrical sub-module and the battery data of the battery management system.

[0175] This embodiment uses the scenario where n is much greater than a (that is, the total number N of electrical sub-modules is much greater than the number of interfaces of the simulation system) as an illustrative embodiment. In a specific implementation, the first test device obtains the actual electrical data of the first power sub-module of the first electrical sub-module, and then transmits the actual electrical data and the first control instruction to the second test device, and then the second test device forwards the actual electrical data and the first control instruction to the simulation system; thereby, the interface of the simulation system indirectly obtains the actual electrical data of each electrical sub-module through the second test device without having to be directly connected to all the electrical sub-modules, further reducing the hardware cost.

[0176] Furthermore, the method further comprises:

[0177] Step S22: the second testing device enables the virtual submodule to perform simulation control based on the second control instruction to obtain simulated electrical data of the second power submodule of the second electrical submodule;

[0178] Accordingly, step S30 of the fourth embodiment further includes:

[0179] In step 32 , the second test device transmits the simulated electrical data and the second control instruction to the simulation system, so that the simulation system simulates the operation of the second power submodule to generate second test data.

[0180] It is understandable that the electrical characteristics of the battery module and power module of the remaining (na) second electrical sub-modules are simulated by the virtual sub-module of the second testing device. The second testing device 02 collects the simulated electrical data of the virtual sub-module, and the simulated electrical data includes battery simulation data of the battery module and power simulation data of the power module.

[0181] The data transmitted between the electrical sub-modules are high-voltage signals (the voltage range of high-voltage signals is between several thousand volts and hundreds of thousands of volts. It is usually used for high-voltage parts in power transmission and electrical equipment), and the data actually simulated by the test system should be low-level signals. Therefore, the high-voltage signals in this embodiment need to be simulated by the model of the simulation system (such as RTDS). Therefore, the second test device of this embodiment is connected to the simulation system in the form of a wiring harness, and the electrical data (actual electrical data and simulated electrical data) and sub-module control instructions (first control instructions and second control instructions) are parsed and converted into electrical data and sub-module control instructions in a preset format suitable for processing by the simulation system (such as RTDS). The electrical data and sub-module control instructions in the preset format are then forwarded to the simulation system, and the model of the simulation system simulates the power sub-modules of each electrical sub-module based on the actual electrical data of the first electrical sub-module and the simulated electrical data of the second electrical sub-module according to the "sub-module control instructions", thereby generating the first test data and the second test data.

[0182] Furthermore, after step S30, the testing method further includes:

[0183] In step S40, the second test device receives the test data fed back by the simulation system and transmits the test data to the control system, so that the control system generates new sub-module control instructions based on the test data; wherein the new sub-module control instructions are used to be sent to each of the first test device and the second test device.

[0184] It is understandable that after the simulation system generates the test results (first test data and second test data), it will feed back the test results to the second test device, and then the second test device will transmit the test results to the control system, forming a closed loop; the control system produces new sub-module control instructions based on the feedback test results, forming a closed-loop control, ensuring that the control system of the power equipment can issue correct control instructions to continuously test the electrical sub-modules.

[0185] This embodiment uses a combination of two sub-module simulation test devices to achieve the full-link test effect of the secondary system of the high-voltage direct-mounted energy storage device, while solving the problem that the test system is too large and difficult to build.

[0186] Furthermore, in this embodiment, the second testing device can also indirectly test the electrical functions of each second electrical submodule. For example, the second testing device can indirectly perform fault insertion testing on each second electrical submodule to verify the functionality of the energy storage system. The specific method steps are as follows: the second testing device tests the power submodule according to different fault types to obtain fault test data; transmits the fault test data to the control system to obtain the control system's test response to the fault test data; and the second testing device ultimately determines the fault test result based on the test response.

[0187] Furthermore, in this embodiment, after step S21, the first test device may further compare the first test data with the actual project information to obtain a comparison result, and transmit the comparison result to the human-computer interaction device for display via the second test device. The human-computer interaction device may be a host computer or a simulation system, and the second test device transmits the comparison result to the human-computer interaction interface of the simulation system or the host computer in real time for display and evaluation by the tester.

[0188] In addition, in this embodiment, the second test device also has the function of monitoring the submodule control instructions issued by the control system (such as the valve control system) to each electrical submodule to determine whether the control instructions of each submodule meet the preset instruction standards, thereby ensuring that they operate correctly according to the design requirements. The monitoring function of the second test device of this embodiment includes the following technical links:

[0189] Receiving submodule control instructions: The second test device can monitor in real time the submodule control instructions issued by the valve control system under test. These instructions may be various operations or adjustment commands for the submodule.

[0190] Instruction analysis: The second test device will conduct an in-depth analysis of the received sub-module control instructions to understand the content, objectives and expected effects of each instruction.

[0191] Algorithm judgment: Through built-in algorithms, the second test device can determine whether these sub-module control instructions meet the design requirements. These algorithms may be based on the characteristics of the valve control system, the expected behavior of the sub-modules, and various preset conditions.

[0192] Monitoring Result Output: After determining the results, the second test device outputs the corresponding monitoring results. If the control instructions meet the design requirements, the second test device may output a "pass" or similar signal; if not, the device may output a "fail" or provide a more detailed error message.

[0193] Debugging and optimization: Based on the monitoring results, developers or engineers can perform necessary debugging and optimization on the valve control system or submodule under test to ensure that they can achieve the expected results in actual applications.

[0194] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0195] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A testing method, the testing method being applied to a testing device for testing a control system of an electric power device, wherein the electric power device is configured such that the control system is connected to N electrical submodules, each electrical submodule including a subcontroller and a power submodule connected to the subcontroller, the testing method comprising: Obtaining submodule control instructions issued by the control system; Acquiring actual electrical data of a power submodule of the electrical submodule, where the actual electrical data is data obtained by the subcontroller controlling the power submodule based on the submodule control instruction; The actual electrical data and the submodule control instructions are transmitted to the simulation system, so that the simulation system simulates the operation of the power submodule to generate test data.

2. The testing method according to claim 1, wherein: The electrical submodule includes a first electrical submodule, the test device includes a first test device, and the submodule control instruction includes a first control instruction; The testing device acquires actual electrical data of the power submodule of the electrical submodule, including: The first testing device acquires actual electrical data of the first power submodule of the first electrical submodule; The test device transmits the actual electrical data to the simulation system, so that the simulation system simulates the operation of the power submodule to generate test data, including: The first test device transmits the actual electrical data and the first control instruction to the simulation system, so that the simulation system simulates the operation of the first power sub-module to generate first test data.

3. The testing method according to claim 2, wherein: The electrical submodule further includes a second electrical submodule, the test device further includes a second test device, and the submodule control instruction further includes a second control instruction; the second test device is configured with a virtual submodule that simulates the interface characteristics of the subcontroller; The test method further comprises: The second testing device enables the virtual submodule to perform simulation control based on the second control instruction to obtain simulated electrical data of the second power submodule of the second electrical submodule; The test device transmits the actual electrical data to the simulation system so that the simulation system simulates the operation of the power submodule to generate test data, and further includes: The second test device transmits the simulated electrical data and the second control instruction to the simulation system, so that the simulation system simulates the operation of the second power sub-module to generate second test data.

4. The testing method according to claim 3, wherein: The step of transmitting the actual electrical data and the first control instruction by the first testing device to the simulation system comprises: The first test device transmits the actual electrical data and the first control instruction to the second test device, and the second test device transmits the actual electrical data and the first control instruction to the simulation system.

5. The testing method according to any one of claims 1 to 4, wherein: After the step of simulating the operation of the power submodule by the simulation system to generate test data, the testing method further includes: The second testing device receives the test data fed back by the simulation system and transmits the test data to the control system, so that the control system generates new sub-module control instructions based on the test data; The new submodule control instruction is used to be sent to each of the first test device and the second test device.

6. The testing method according to any one of claims 1 to 4, wherein: The power submodule is configured with a power module; The power submodule includes a power module controller; The testing device acquires actual electrical data of the power submodule of the electrical submodule, including: The testing device obtains power data of a power module controller of a power submodule of an electrical submodule.

7. The testing method according to claim 6, wherein: The power submodule is further configured with a battery; the power submodule also includes a battery management system; The testing device acquires power data of a power module controller of a power submodule of an electrical submodule, including: The first testing device obtains power data of a power module controller of the first electrical submodule and battery data of a battery management system.

8. The testing method according to any one of claims 2 to 7, wherein: After the step of simulating the operation of the first power submodule by the simulation system to generate first test data, the testing method further includes: The first testing device acquires the first testing data; The first testing device compares the first testing data with the actual engineering information to obtain a comparison result, and sends the comparison result to the human-computer interaction device for display.

9. The testing method according to any one of claims 1 to 7, wherein: The test method further comprises: The second testing device determines whether the submodule control instruction meets the preset instruction standard, and generates an alarm message when the submodule control instruction does not meet the preset instruction standard.

10. The testing method according to any one of claims 1 to 7, wherein: The test method further comprises: The second testing device tests the power submodule according to different fault types to obtain fault test data; The second testing device transmits the fault test data to the control system to obtain a test response of the control system to the fault test data; The second testing device determines a fault test result according to the test response.

11. A test system for testing a control system of an electric power device, wherein the electric power device is configured such that the control system is connected to N electrical submodules, each electrical submodule comprising a subcontroller and a power submodule connected to the subcontroller; the test system comprises a simulation system and a test device in signal connection with the simulation system; The testing device is used to obtain actual electrical data collected by the sub-controller based on the sub-module control instructions, and transmit the actual electrical data and the sub-module control instructions to the simulation system; The submodule control instructions are issued by the control system; The simulation system is used to simulate the operation of the power submodule to generate test data.

12. The test system of claim 11, wherein: The N electrical sub-modules include a first electrical sub-modules and (Na) second electrical sub-modules, wherein N is greater than a, and both N and a are positive integers; The testing device further comprises a first testing device and a second testing device; The N electrical submodules include a first electrical submodule having a first subcontroller and a first power submodule; each first electrical submodule is configured with one first testing device; The second test device is configured with a virtual sub-module having the same interface characteristics as the sub-controller of the electrical sub-module, and the virtual sub-module is used to simulate the electrical characteristics of the second electrical sub-module.

13. The test system of claim 12, wherein: One end of the second test device is connected to the simulation system, and the other end of the second test device is connected to one or more first test devices, so that the first test device is connected to the simulation system through the second test device.

14. The test system according to any one of claims 11 to 13, wherein: The first test device includes an analog interface; the power submodule includes a power module controller and a battery management system; The first testing device is further configured to collect actual electrical data of the power module controller and the battery management system of the first electrical sub-module based on the analog interface.

15. The test system of claim 14, wherein: The analog interface at least includes an electronic switch unit interface, a bypass switch unit interface and a battery unit interface; The first testing device is configured to collect power data collected by the power module controller based on the electronic switch unit interface and the bypass switch unit interface; The first testing device is configured to collect battery data collected by the battery management system based on the battery cell interface.

Images