Test system of stable control device for grid-connected new energy

Abstract

The application provides a test system of a stable control device of a new energy grid connection, comprising a test device and a background monitoring device in communication connection with the test device, wherein the background monitoring device is used to generate first test data and send the first test data to the test device, wherein the first test data is electrical signal data of a new energy field station outgoing line and a concentrator; the test device in communication connection with the stable control device of the new energy grid connection carries out first type test according to the first test data and receives a test result of the stable control device in the first type test, wherein the stable control device is a device for stably controlling a new energy grid connection system, the new energy grid connection system is a system formed after the new energy is connected to a power grid, and the first type test is a near-end function test of the stable control device. The system solves the problems of low test efficiency and high cost of the stable control device in the prior art.

Description

Technical Field

[0001] This application relates to the field of new energy grid connection, and more specifically, to a test system for a stable control device for new energy grid connection. Background Technology

[0002] The large-scale, multi-voltage-level, and distributed integration of key components such as wind and solar renewable energy generation, energy storage, and loads in the new power system will lead to a sharp increase in the size and complexity of the power system. The high degree of power electronics in the new power system will give it high-frequency and rapid dynamic characteristics such as low rotational inertia, high-speed switching of control strategies, and wide frequency range of oscillations.

[0003] To ensure the safety and stability of the power grid after the integration of new energy sources, a large number of safety and stability control devices have been installed at various new energy power plants. These control devices have diverse functions and are interconnected, forming a massive new energy stability control system. Traditional system testing methods require the complete 1:1 reconstruction of all the stability control devices at the new energy power plants in a laboratory for comprehensive static and dynamic simulation tests to ensure the reliability of the stability control system before it is put into field operation. However, in reality, no laboratory currently has the equipment and simulation system large enough to support the static and dynamic simulation tests of the stability control system. Traditional centralized stability control simulation testing methods are not universally applicable. Therefore, it is necessary to consider on-site acceptance, simulation, and testing of the stability control devices to effectively improve the efficiency of new energy stability control system testing.

[0004] Therefore, there is an urgent need for a method to solve the problems of low testing efficiency and high cost of existing stable control devices. Summary of the Invention

[0005] The main purpose of this application is to provide a test system for a stable control device for grid connection of new energy, so as to at least solve the problems of low testing efficiency and high cost of stable control devices in the prior art.

[0006] According to one aspect of this application, a test system for a stable control device for grid-connected new energy sources is provided, comprising a test device and a background monitoring device communicatively connected to the test device. The background monitoring device generates first test data and sends it to the test device. The first test data consists of electrical signal data from the outgoing and incoming lines of the new energy power station. The test device, communicatively connected to the stable control device for grid-connected new energy sources, performs a first type of test based on the first test data and receives the test results of the first type of test performed by the stable control device. The stable control device is a device for stabilizing a grid-connected new energy system, which is a system formed after new energy sources are connected to the power grid. The first type of test is a near-end function test of the stable control device.

[0007] Optionally, the system further includes: a laboratory system communicatively connected to the background monitoring device, used to receive second test data sent by the test device forwarded by the background monitoring device, and to perform a second type of test based on the second test data. The second type of test is a remote functional test of the stability control device.

[0008] Optionally, the system further includes: an interface conversion device communicatively connected to the background monitoring device, used to receive the second test data forwarded by the background monitoring device when performing the second type of test, and to perform interface conversion on the second test data to obtain third test data, and send the third test data to the laboratory system.

[0009] Optionally, the stability control device includes an energy storage execution station. When the test equipment performs the second type of test, the test equipment is further configured to: receive the second test data sent by the energy storage execution station and send the second test data to the background monitoring equipment. The second test data is the grid connection information data of new energy and fault information data.

[0010] Optionally, the stability control device includes an upper-level stability control system, an energy storage control substation, and an energy storage execution station. The test equipment, which is communicatively connected to the stability control device connected to the new energy grid, performs a first type of test based on the first test data and receives the test results of the first type of test performed by the stability control device. This includes: sending the first test data to the energy storage execution station to stop the energy storage execution station from collecting data and obtaining the test action of the energy storage execution station based on the first test data; determining the test action as the test result and receiving the test result; determining whether the test result is the same as the action of the energy storage execution station collecting data; if the test result is the same as the action of the energy storage execution station collecting data, determining that the stability control device has not malfunctioned; if the test result is different from the action of the energy storage execution station collecting data, determining that the stability control device has malfunctioned.

[0011] Optionally, when the testing equipment performs the first type of test, the background monitoring equipment is further configured to: acquire the operating parameters of the stability control device and the strategy logic information of the stability control device, wherein the operating parameters are the electrical parameters of the stability control device, and the strategy logic information is the strategy of the stability control device for stability control in the event of a new energy grid connection failure; generate fault parameters and preset action information for the new energy grid connection based on the operating parameters and the strategy logic information; and generate the first test data based on the fault parameters and preset action information for the new energy grid connection.

[0012] Optionally, the second test data is 100Mbps network interface data, the third test data is 2Mbps fiber optic interface data, and the interface conversion device is further configured to convert the 100Mbps network interface data into the 2Mbps fiber optic interface data.

[0013] Optionally, the laboratory system is further configured to: send a control command to the stability control device based on the second test data, so that the stability control device stops working when the second test data characterizes a fault in the new energy source.

[0014] Optionally, the stability control device includes a higher-level stability control system, an energy storage control substation, and an energy storage execution station. The two ends of a first communication channel are respectively connected to the energy storage execution station and the testing equipment. The two ends of a second communication channel are respectively connected to the energy storage execution station and the data acquisition equipment of the energy storage execution station. The testing system is further configured to: when performing the first type of test, connect the first communication channel and disconnect the second communication channel, and establish a communication connection between the energy storage execution station and the testing equipment; when not performing the first type of test, disconnect the first communication channel and connect the second communication channel, and establish a communication connection between the energy storage execution station and the data acquisition equipment of the energy storage execution station, so that the energy storage execution station can operate normally and be used for data acquisition.

[0015] Optionally, the stability control device includes a higher-level stability control system, an energy storage control substation, and an energy storage execution station. The two ends of a third communication channel are respectively connected to the energy storage execution station and the energy storage control substation, and the two ends of a fourth communication channel are respectively connected to the energy storage execution station and the testing equipment. The testing system is further configured to: when performing the second type of test, the third communication channel is activated and the fourth communication channel is disconnected, and the energy storage execution station and the testing equipment are communicatively connected; when not performing the second type of test, the third communication channel is activated and the fourth communication channel is disconnected, and the energy storage execution station and the energy storage control substation are communicatively connected.

[0016] Applying the technical solution of this application, the testing system for the stability control device of new energy grid connection includes testing equipment and a background monitoring device communicatively connected to the testing equipment. The background monitoring device generates first test data and sends it to the testing equipment. The testing equipment, communicatively connected to the stability control device of new energy grid connection, performs a first type of test based on the first test data and receives the test results of the first type of test performed by the stability control device. By setting the testing equipment at the new energy grid connection aggregation station, it enables the input of test quantities for large-scale new energy power plants and the forwarding of control quantities for the stability control system. This allows for a comprehensive and complete test of the new energy grid connection stability control system in terms of device function, communication, and grid connection performance. It eliminates the need for a 1:1 test system, effectively improving testing efficiency and reducing costs. This solves the problems of low testing efficiency and high cost in existing technologies for stability control devices. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 A schematic diagram of a test system structure for a new energy grid-connected stability control device provided in an embodiment of this application is shown.

[0019] Figure 2 It shows in Figure 1 A schematic diagram of the test system structure for adding a stable control device for new energy grid connection to the laboratory system;

[0020] Figure 3 It shows in Figure 2 A schematic diagram of the test system structure for a new energy grid-connected stability control device with added interface conversion equipment;

[0021] Figure 4 It shows Figure 1 A schematic diagram of the test system structure for a new energy grid-connected stability control device with the addition of a first and second communication channels on the basis of existing technology;

[0022] Figure 5 It shows Figure 3 The schematic diagram shows the test system structure of a new energy grid-connected stability control device with the addition of a third and fourth communication channel on the basis of the existing system.

[0023] The above figures include the following reference numerals:

[0024] 100. Background monitoring equipment; 200. Testing equipment; 300. Stability control device; 400. Laboratory system; 500. Interface conversion equipment; 600. Energy storage execution station; 700. Energy storage control substation. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data used in this way can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] The large-scale, multi-voltage-level, and distributed integration of key components such as wind and solar renewable energy generation, energy storage, and loads in the new power system will lead to a sharp increase in the size and complexity of the power system. The high degree of power electronics in the new power system will give it high-frequency and rapid dynamic characteristics such as low rotational inertia, high-speed switching of control strategies, and wide frequency range of oscillations.

[0029] To ensure the safety and stability of the power grid after the integration of new energy sources, a large number of safety and stability control devices have been installed at various new energy power plants. These control devices have diverse functions and are interconnected, forming a massive new energy stability control system. Traditional system testing methods require the complete 1:1 reconstruction of all the stability control devices at the new energy power plants in a laboratory for comprehensive static and dynamic simulation tests to ensure the reliability of the stability control system before it is put into field operation. However, in reality, no laboratory currently has the equipment and simulation system large enough to support the static and dynamic simulation tests of the stability control system. Traditional centralized stability control simulation testing methods are not universally applicable. Therefore, it is necessary to consider on-site acceptance, simulation, and testing of the stability control devices to effectively improve the efficiency of new energy stability control system testing.

[0030] The distributed and massively connected characteristics of the stability control devices at new energy power stations render the original centralized testing methods unusable, mainly in the following ways:

[0031] (1) The stability control system is large in scale. Centralized testing requires rebuilding the field stability control system, which is inefficient, has high investment, and consumes a lot of human resources.

[0032] (2) The stability control of new energy power stations is mostly related to the grid connection performance of new energy controllers, and traditional testing methods are difficult to verify in practice;

[0033] (3) In traditional testing methods, the communication link between the new energy power plant's stabilization and control device and the upper-level stabilization and control system is not effectively tested, or only a simple test is performed. Since the communication networks of new energy power plants are all self-built networks, after connecting to the power system's main communication network, there may be many frame drops and bit errors. Detailed and reliable testing is required to ensure its reliability.

[0034] As described in the background section, existing technologies suffer from low testing efficiency and high costs for stability control devices. To address these issues, embodiments of this application provide a testing system for a stability control device for grid-connected new energy sources.

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0036] This application provides a test system for a stable control device for grid connection of new energy sources.

[0037] The following describes the test system for the stable control device for grid connection of new energy provided in the embodiments of this application.

[0038] Figure 1 This is a schematic diagram of a test system for a stable control device for grid-connected new energy sources according to an embodiment of this application. Figure 1 As shown, the device includes:

[0039] The aforementioned background monitoring device 100 is used to generate first test data and send it to the aforementioned test device 200, wherein the aforementioned first test data is electrical signal data of the outgoing and connecting lines of the new energy power station;

[0040] Specifically, a grid-connected stability control system for a renewable energy plant typically consists of renewable energy actuators installed at the renewable energy plant, renewable energy control substations installed at the collection station, and a higher-level stability control system. A renewable energy control substation generally consists of multiple subordinate renewable energy actuators.

[0041] The test equipment 200, which is communicatively connected to the stability control device 300 for grid connection of new energy, performs a first type of test based on the first test data and receives the test results of the first type of test performed by the stability control device 300. The stability control device 300 is a device for stabilizing the grid-connected new energy system, which is a system formed after new energy is connected to the power grid. The first type of test is a near-end function test of the stability control device 300.

[0042] Specifically, by installing the test equipment at the new energy collection station and using the existing communication loop to acquire real-time data from the new energy power station, closed-loop joint commissioning can be further achieved.

[0043] In the embodiments of this application, the testing system for the stability control device of new energy grid connection includes testing equipment and a background monitoring device communicatively connected to the testing equipment. The background monitoring device generates first test data and sends it to the testing equipment. The testing equipment, communicatively connected to the stability control device of new energy grid connection, performs a first type of test based on the first test data and receives the test results of the first type of test performed by the stability control device. By setting the testing equipment at the new energy grid connection aggregation station, the system can input test quantities for large-scale new energy power plants and forward control quantities for the stability control system. This allows for a comprehensive and complete test of the new energy grid connection stability control system in terms of device function, communication, and grid connection performance. It eliminates the need for a 1:1 test system, effectively improving testing efficiency and reducing costs. This solves the problems of low testing efficiency and high cost of stability control devices in the prior art.

[0044] According to a specific embodiment of this application, such as Figure 2 As shown, in addition to the aforementioned testing equipment 200 and background monitoring equipment 100, the system further includes a laboratory system 400 communicatively connected to the background monitoring equipment 100. This laboratory system 400 receives second test data forwarded by the background monitoring equipment 100 from the testing equipment 200 and performs a second type of test based on the second test data. This second type of test is a remote functional test of the stability control device 300. The general-purpose tester for new energy grid-connected stability control provides a relay function, that is, it receives the collected data from the new energy execution station, aggregates it, and forwards it through the tester's monitoring background to a dedicated communication interface conversion device configured in the laboratory via a public network. The communication interface conversion device then converts the data back to the multi-channel communication protocol between the new energy execution station and the new energy control station, realizing communication with the laboratory's new energy control substation physical test device. Therefore, the aforementioned laboratory system can achieve communication with the energy storage execution station.

[0045] To further reduce testing costs, according to another specific embodiment of this application, such as... Figure 3As shown, in addition to the aforementioned testing equipment 200, background monitoring equipment 100, and laboratory system 400, the system further includes an interface conversion device 500 communicatively connected to the background monitoring equipment 100. This device receives the second test data forwarded by the background monitoring equipment 100 during the second type of testing, performs interface conversion on the second test data to obtain third test data, and then sends the third test data to the laboratory system 400. The interface conversion device converts the fiber optic channel data of the energy storage execution station into channel data of a common wireless network or public network, reducing the need for fiber optic channel deployment and further reducing testing costs.

[0046] According to another specific embodiment of this application, based on the aforementioned testing equipment and background monitoring equipment, the stability control device includes an energy storage execution station. When the testing equipment performs the aforementioned second type of test, the testing equipment is further configured to: receive the second test data sent by the energy storage execution station and send the second test data to the background monitoring equipment. The second test data consists of new energy grid connection switching information data and fault information data. The data received by the testing equipment from the stability control device mainly originates from data collected by the energy storage execution station through the collector wire. After receiving this data, the testing equipment forwards it for further processing of the second test data.

[0047] According to another specific embodiment of this application, based on the aforementioned testing equipment and background monitoring equipment, the aforementioned stability control device includes an upper-level stability control system, an energy storage control substation, and an energy storage execution station. The aforementioned testing equipment, which is communicatively connected to the stability control device connected to the new energy grid, performs a first type of test based on the aforementioned first test data and receives the test results of the aforementioned first type of test performed by the aforementioned stability control device. This includes: sending the aforementioned first test data to the aforementioned energy storage execution station to cause the aforementioned energy storage execution station to stop collecting data and obtain the test action of the aforementioned energy storage execution station based on the aforementioned first test data; determining that the aforementioned test action is the aforementioned test result and receiving the aforementioned test result; determining whether the aforementioned test result is the same as the action of the aforementioned energy storage execution station collecting data; if the aforementioned test result is the same as the action of the aforementioned energy storage execution station collecting data, determining that the aforementioned stability control device has not malfunctioned; if the aforementioned test result is different from the action of the aforementioned energy storage execution station collecting data, determining that the aforementioned stability control device has malfunctioned. The system receives data sent by the testing equipment, replaces the voltage and current of the acquisition circuit, operates according to the functional logic of the new energy execution station, but automatically locks out without actual output, and sends the action result back to the testing equipment to verify whether the action result is correct. When the test is completed, the new energy actuator resumes normal data acquisition and operation. The general-purpose test equipment for grid-connected stability control of new energy can also conduct continuous tests according to preset test cases, and can simultaneously and automatically test the stability control devices of multiple new energy fields, and automatically generate reports, thereby significantly improving the efficiency of new energy actuator testing.

[0048] According to another specific embodiment of this application, based on the aforementioned testing equipment and background monitoring equipment, when the aforementioned testing equipment performs the aforementioned first type of test, the background monitoring equipment is further configured to: acquire the operating parameters of the aforementioned stability control device and the strategy logic information of the aforementioned stability control device, wherein the aforementioned operating parameters are the electrical parameters of the aforementioned stability control device, and the aforementioned strategy logic information is the strategy for the aforementioned stability control device to perform stability control in the event of a new energy grid connection failure; generate the aforementioned new energy grid connection failure parameters and preset action information based on the aforementioned operating parameters and the aforementioned strategy logic information; and generate the aforementioned first test data based on the aforementioned new energy grid connection failure parameters and preset action information. Based on the collected information and functional strategies of each new energy execution station, test samples are generated in the testing instrument monitoring background, and the test data generated by the test samples is sent to the new energy execution station device. The sent test data includes the voltage and current of the new energy field outgoing lines, and the voltage and current of each collector line, etc.

[0049] According to another specific embodiment of this application, based on the aforementioned testing equipment, background monitoring equipment, laboratory system, and interface conversion equipment, the second test data is 100Mbps network interface data, and the third test data is 2Mbps fiber optic interface data. The interface conversion equipment is further used to convert the 100Mbps network interface data into the 2Mbps fiber optic interface data. Taking the 2Mbps fiber optic interface data as an example, the data conversion can be achieved through 100Mbps public network or wireless network interface data, so that the data received by the laboratory system is converted into 2Mbps fiber optic interface data collected by the energy storage execution station.

[0050] According to another specific embodiment of this application, in addition to the aforementioned testing equipment, background monitoring equipment, and laboratory system, the laboratory system is further configured to: send control commands to the aforementioned stability control device based on the aforementioned second test data, so that the stability control device stops operating when the aforementioned second test data indicates a new energy source failure. When the content of the inter-station information transmission received by the laboratory system is consistent with the actual system, i.e., the new energy execution station sends up the switchability and fault information of the new energy source, it receives commands from the control substation to control the new energy source. In the event of a fault, the laboratory system can send control commands to control the energy storage execution station.

[0051] According to another specific embodiment of this application, such as Figure 4As shown, based on the aforementioned test equipment 200 and background monitoring equipment, the aforementioned stability control device includes an upper-level stability control system, an energy storage control substation, and an energy storage execution station 600. The two ends of a first communication channel are respectively connected to the energy storage execution station 600 and the test equipment 200. The two ends of a second communication channel are respectively connected to the energy storage execution station 600 and its data acquisition device. The test system is further configured to: when performing the aforementioned first type of test, the first communication channel is open and the second communication channel is closed, and the energy storage execution station 600 and the test equipment 200 are connected in communication; when not performing the aforementioned first type of test, the first communication channel is closed and the second communication channel is open, and the energy storage execution station 600 and its data acquisition device are connected in communication, so that the energy storage execution station 600 can operate normally and be used for data acquisition. The energy storage actuator can be configured with a "test mode" control panel and control word to receive data from the general-purpose test equipment for grid-connected stability control of new energy sources. It replaces the voltage and current measurements in the acquisition circuit, operates according to the functional logic of the new energy actuator, but automatically locks out before any actual output is achieved. The results are then transmitted back to the general-purpose test equipment for grid-connected stability control of new energy sources to verify the accuracy of the results. When both the "test mode" control panel and control word are deactivated, the new energy actuator resumes normal data acquisition and operation. The general-purpose test equipment for grid-connected stability control of new energy sources can also continuously test according to preset test cases and can simultaneously and automatically test the stability control devices of multiple new energy fields, automatically generating reports, thus significantly improving the efficiency of new energy actuator testing.

[0052] According to another specific embodiment of this application, such as Figure 5As shown, based on the aforementioned test equipment 200, background monitoring equipment 100, and laboratory system 400, the aforementioned stability control device includes an upper-level stability control system, an energy storage control substation 700, and an energy storage execution station 600. The two ends of the third communication channel are connected to the energy storage execution station 600 and the energy storage control substation 700, respectively. The two ends of the fourth communication channel are connected to the energy storage execution station 600 and the test equipment 200, respectively. The test system is further configured to: when performing the aforementioned second type of test, the third communication channel is activated and the fourth communication channel is deactivated, and the energy storage execution station 600 and the test equipment 200 are connected in communication; when not performing the aforementioned second type of test, the third communication channel is activated and the fourth communication channel is deactivated, and the energy storage execution station 600 and the energy storage control substation 700 are connected in communication. A physical communication switching switch is set on the 2M fiber optic channel from the energy storage execution station to the energy storage control substation. Switching to 0 represents the actual channel, i.e., the third communication channel, and switching to 1 represents the test channel, i.e., the fourth communication channel. Data sent from the execution station is collected through the test channel to the general-purpose tester for grid-connected stability control of new energy. It is then forwarded to the tester's monitoring backend via a 100Mbps network interface. The backend forwards the data to a communication interface conversion device via a conventional public or wireless network router, converting it into multiple 2Mbps fiber optic channel interfaces consistent with the actual system. These interfaces are then connected to the energy storage control substation of the stability control test system built in the laboratory. Once the test is complete, switching the communication channel between the control substation and the execution station back to "1" restores normal communication of the stability control system.

[0053] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0054] 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.

[0055] 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 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0056] 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 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0057] 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 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0058] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0059] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0060] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0061] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0062] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0063] The testing system for a new energy grid-connected stability control device disclosed in this application includes testing equipment and a background monitoring device communicatively connected to the testing equipment. The background monitoring device generates first test data and sends it to the testing equipment. The testing equipment, communicatively connected to the new energy grid-connected stability control device, performs a first type of test based on the first test data and receives the test results from the stability control device. By setting up the testing equipment at the new energy grid-connected aggregation station, it enables the input of test parameters from large-scale new energy power plants and the forwarding of control parameters from the stability control system. This allows for a comprehensive and complete test of the new energy grid-connected stability control system in terms of device functionality, communication, and grid-connection performance. It eliminates the need for a 1:1 test system, effectively improving testing efficiency and reducing costs. This solves the problems of low testing efficiency and high cost in existing technologies for stability control devices.

[0064] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A test system for a stable control device for grid-connected new energy sources, characterized in that, It includes testing equipment and a background monitoring device that is communicatively connected to the testing equipment, wherein, The background monitoring device is used to generate first test data and send it to the test device, wherein the first test data is electrical signal data of the outgoing and connecting lines of the new energy power station; The test equipment, which is communicatively connected to the stability control device for grid connection of new energy, performs a first type of test based on the first test data and receives the test results of the first type of test performed by the stability control device. The stability control device is a device for stabilizing the grid-connected new energy system, which is a system formed after new energy is connected to the grid. The first type of test is a near-end function test of the stability control device. The system also includes: The laboratory system, which is communicatively connected to the background monitoring device, is used to receive the second test data sent by the test device forwarded by the background monitoring device, and to perform a second type of test based on the second test data. The second type of test is a remote function test of the stability control device. The stability control device includes an upper-level stability control system, an energy storage control substation, and an energy storage execution station. The test equipment, which is communicatively connected to the stability control device of the new energy grid connection, performs a first type of test based on the first test data and receives the test results of the first type of test performed by the stability control device, including: Send the first test data to the energy storage execution station so that the energy storage execution station stops collecting data and obtains the test action of the energy storage execution station based on the first test data; The test action is determined to be the test result, and the test result is received; Determine whether the test results are the same as the actions performed by the energy storage execution station in collecting data; If the test results are the same as the actions of the data collected by the energy storage execution station, it is determined that the stability control device has not malfunctioned; If the test results differ from the actions recorded by the energy storage execution station, it is determined that the stability control device has malfunctioned.

2. The system according to claim 1, characterized in that, The system also includes: An interface conversion device that is communicatively connected to the background monitoring device is used to receive the second test data forwarded by the background monitoring device when performing the second type of test, and to perform interface conversion on the second test data to obtain third test data, and then send the third test data to the laboratory system.

3. The system according to claim 1, characterized in that, The stability control device includes an energy storage execution station, and when the test equipment performs the second type of test, the test equipment is further used for: The system receives the second test data sent by the energy storage execution station and sends the second test data to the background monitoring device. The second test data includes grid connection information data of new energy sources and fault information data.

4. The system according to claim 1, characterized in that, When the testing equipment performs the first type of test, the background monitoring equipment is further used for: The operating parameters and strategy logic information of the stability control device are obtained, wherein the operating parameters are the electrical parameters of the stability control device, and the strategy logic information is the strategy of the stability control device for stability control in the event of a new energy grid connection failure. Based on the operating parameters and the strategy logic information, generate the fault parameters and preset action information for the grid connection of the new energy source; The first test data is generated based on the fault parameters and preset action information of the new energy grid connection.

5. The system according to claim 2, characterized in that, The second test data is 100Mbps network interface data, and the third test data is 2Mbps fiber optic interface data. The interface conversion device is also used for: The 100Mbps network interface data is converted into the 2Mbps fiber optic interface data.

6. The system according to claim 1, characterized in that, The laboratory system is also used for: Based on the second test data, a control command is sent to the stability control device so that the stability control device stops working when the second test data indicates a grid connection failure of the new energy source.

7. The system according to claim 1, characterized in that, The stability control device includes a higher-level stability control system, an energy storage control substation, and an energy storage execution station. The two ends of a first communication channel are connected to the energy storage execution station and the testing equipment, respectively. The two ends of a second communication channel are connected to the energy storage execution station and the data acquisition equipment of the energy storage execution station, respectively. The testing system is further used for: When performing the first type of test, the first communication channel is open and the second communication channel is closed, and the energy storage execution station and the test equipment are in communication connection. Without performing the first type of test, the first communication channel is disconnected and the second communication channel is connected, and the energy storage execution station and the data acquisition device of the energy storage execution station are connected to communicate so that the energy storage execution station can work normally and be used to collect data.

8. The system according to claim 1, characterized in that, The stability control device includes a higher-level stability control system, an energy storage control substation, and an energy storage execution station. The two ends of a third communication channel are respectively connected to the energy storage execution station and the energy storage control substation. The two ends of a fourth communication channel are respectively connected to the energy storage execution station and the testing equipment. The testing system is further used for: When performing the second type of test, the third communication channel is disconnected and the fourth communication channel is connected, and the energy storage execution station and the test equipment are in communication connection. Without performing the second type of test, the third communication channel is activated and the fourth communication channel is disconnected, and the energy storage execution station and the energy storage control substation are connected in communication.

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