Automatic test method and system for valve control system of flexible direct current converter valve

Abstract

The invention relates to an automatic test method and system for a flexible direct current converter valve control system, and belongs to the technical field of flexible direct current power transmission. In view of the complexity of a flexible direct current converter valve control system structure and the diversity of operation conditions, and the problems of low efficiency, insufficient accuracy, difficulty in covering all working conditions and the like of a traditional test method, an upper computer is respectively connected with a test device and a tested valve control system to form a set of efficient and collaborative test system; the flexible direct current converter valve control system can be automatically and accurately subjected to comprehensive testing, the testing efficiency and accuracy are remarkably improved, and stable and reliable operation of the flexible direct current power transmission system is effectively ensured.

Description

Technical Field

[0001] This invention belongs to the field of flexible DC transmission technology, specifically relating to an automatic testing method and system for a flexible DC converter valve control system. Background Technology

[0002] Direct current (DC) transmission boasts advantages such as high efficiency, low loss, and the ability to span long distances, making it an ideal choice for long-distance, high-power power transmission. Given the ever-increasing electricity load in China, promoting the development and export of clean energy, the development of DC transmission is of great strategic significance. Currently, we are at a critical juncture for the country to optimize its energy structure and develop green energy; DC transmission technology will play a vital role in power grid development and energy transition.

[0003] Converter valves are core equipment in DC transmission, and the valve control equipment is the control center of the converter valves, significantly impacting the safety and stability of the DC transmission system. In existing testing of flexible DC converter valve control systems, manual testing is typically used, requiring testers to set up test cases step-by-step according to the test outline and record test data. This method is not only inefficient but also susceptible to human error, leading to inaccurate test results. Furthermore, existing testing equipment has limited functionality and cannot meet complex and varied testing requirements, such as testing edge or limit values. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic testing method and system for a flexible DC converter valve control system, in order to solve the problems of how to improve testing efficiency, enhance testing accuracy and comprehensiveness, and reduce the requirements for testing personnel.

[0005] To achieve the above objectives, the present invention includes: An automatic testing method for a flexible DC converter valve control system according to the present invention includes: The automatic test system's backend communicates with the valve control system under test (VDT) through an automatic test gateway. The VDT's gateway forwards the VDT's control chassis data to the VDT's backend and the automatic test system's gateway via the IEC61850 or IEC104 protocol. The automatic test gateway then forwards the received valve control data to the automatic test system's backend via the MODBUS TCP protocol, thereby enabling monitoring and analysis of the VDT's testing process.

[0006] Furthermore, the automatic test gateway also receives data from the valve control system under test. After processing the data, it interacts with the background of the automatic test system to verify both the FCK series chassis in the valve control system under test and the valve control gateway of the valve control system under test.

[0007] Furthermore, the automatic test system backend establishes communication with the automatic test device and automatic test gateway of the automatic test system, and combines the data returned by the test device and the data of the automatic test gateway to judge the test results.

[0008] Furthermore, the automatic testing system's backend communicates directly with the testing device via the UDP protocol to issue test commands and parameters, as well as receive and judge test data.

[0009] Furthermore, the automatic testing system backend automatically generates corresponding test instructions and stimuli based on preset test cases, and sends them to the valve control system under test and the testing device through the communication interface.

[0010] The present invention discloses an automatic testing system for a flexible DC converter valve control system, comprising an automatic testing system backend, an automatic testing gateway, and a testing device; the automatic testing system backend communicates with the valve control system under test through the automatic testing gateway; the automatic testing gateway receives valve control chassis data of the valve control system under test, forwarded by the valve control gateway of the valve control system under test through the IEC61850 or IEC104 protocol, and then forwards the received valve control data to the automatic testing system backend through the MODBUS TCP protocol, thereby realizing the monitoring and analysis of the testing process of the valve control system under test.

[0011] Furthermore, the automatic test gateway also receives data from the valve control system under test. After processing the data, it interacts with the background of the automatic test system to verify both the FCK series chassis in the valve control system under test and the valve control gateway of the valve control system under test.

[0012] Furthermore, the automatic test system backend establishes communication with the automatic test device and automatic test gateway of the automatic test system, and combines the data returned by the test device and the data of the automatic test gateway to judge the test results.

[0013] Furthermore, the automatic testing system's backend communicates directly with the testing device via the UDP protocol to issue test commands and parameters, as well as receive and judge test data.

[0014] Furthermore, the testing device was a similar setup to the valve control system, also using the FCK series chassis.

[0015] Furthermore, the automatic testing system backend automatically generates corresponding test instructions and stimuli based on preset test cases, and sends them to the valve control system under test and the testing device through the communication interface.

[0016] The beneficial effects of this invention are as follows: The present invention provides an automatic testing method and system for a flexible DC converter valve control system, which improves the testing efficiency, enhances the accuracy and comprehensiveness of the test, and reduces the requirements for test personnel. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure and connection method of the automatic testing system of the present invention; Figure 2 This is a schematic diagram of the architecture of the background software of the automatic testing system of the present invention; Figure 3 This is a design diagram of the interactive interface of the background software of the automatic testing system of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0019] Given the complexity of the flexible DC converter valve control system structure and the diversity of operating conditions, traditional testing methods suffer from low efficiency, insufficient accuracy, and difficulty in covering all operating conditions. This invention establishes a highly efficient and collaborative testing system by connecting the host computer with the testing device and the valve control system under test. This system can automatically and accurately conduct comprehensive testing of the flexible DC converter valve control system, significantly improving testing efficiency and accuracy, and effectively ensuring the stable and reliable operation of the flexible DC transmission system.

[0020] Implementation method of automatic testing method for flexible DC converter valve control system: The system connects the testing device to the flexible DC converter valve control system for initial setup, including setting test parameters and selecting test modes. Based on preset test cases, it generates corresponding test commands and test stimuli, sending these commands to the valve control system and testing device via a communication interface. It collects real-time operational data from the valve control system and testing device during the test, such as voltage, current, and switch status, and preprocesses the collected data. Using intelligent analysis algorithms and test case rules, it analyzes and processes the preprocessed data, determines the test results of each item, and promptly records abnormal information and issues alarms through the event system. After the test is completed, the automatic testing system generates a standardized test report based on the test results, including test time, test items, test results, and abnormal information, and outputs or stores the test report in the database.

[0021] Specifically, the automatic testing method for the flexible DC converter valve control system of the present invention includes: (1) The automatic test system backend communicates with the valve control system under test through the automatic test gateway. The valve control system gateway forwards the valve control chassis data to the valve control system backend and the automatic test gateway through the IEC61850 or IEC104 protocol. The automatic test gateway then forwards the received valve control data to the automatic test system backend through the MODBUS TCP protocol, thereby realizing the monitoring and analysis of the test process of the valve control system under test.

[0022] (2) The automatic test gateway can verify both the FCK series chassis in the valve control system under test and the valve control gateway of the valve control system under test by interacting with the background of the automatic test system. (3) The automatic test system backend establishes communication with the test device and the automatic test gateway to perform initialization settings, including setting test parameters and selecting test modes, and combines the data returned by the test device and the data of the automatic test gateway to judge the test results.

[0023] (4) The automatic test system backend communicates directly with the test device through a custom UDP protocol to send test instructions and test parameters, as well as receive and judge test data.

[0024] (5) The automatic test system background automatically generates corresponding test instructions and stimuli based on the preset test cases, and sends them to the valve control system under test and the test device through the communication interface.

[0025] (6) The automatic testing system can collect and store the operating data of the valve control system under test in real time during the testing process, and analyze the data through the built-in analysis module to identify abnormal signals and state changes, thereby quickly locating potential fault points. At the same time, the automatic testing system supports data mapping and conversion between multiple communication protocols to ensure the consistency and accuracy of data interaction between different devices.

[0026] (7) After the test is completed, the automatic test system backend generates a standardized test report based on the test results, including test time, test items, test results, abnormal information, etc., and outputs or stores the test report in the database.

[0027] Figure 1 This is a schematic diagram illustrating the structure and connection method of the automatic test system and the valve control system under test. The valve control system under test shown on the left is a schematic diagram of a typical valve control system, including the valve control system backend. The valve control system backend is connected to various valve control gateways via IEC communication. Each valve control gateway is connected to a corresponding switch, and each switch is connected to a corresponding FCK series chassis.

[0028] The automated testing system on the right includes an automated testing system backend, an automated testing gateway, a switch, and a measurement and control device. The automated testing system backend communicates with the automated testing gateway using the Modbus TCP communication protocol. The automated testing system backend connects to the corresponding switch via UDP communication, and the switch connects to the testing device. The testing device is similar to the valve control system, also using the FCK series chassis, but a measurement and control chassis specifically designed for the valve control automated testing system. The automated testing system backend functions include test configuration and management, automatic test case generation, valve control communication monitoring and analysis, test process monitoring and analysis, test progress and result display, waveform file generation, and test report generation.

[0029] The valve control system under test (VDS) connects to the automated test gateway of the automated test system via an Ethernet switch using the IEC communication protocol. The automated test system's backend communicates with the automated test gateway using the Modbus TCP communication protocol, while the VDS and the test device communicate via a switch using UDP. In this architecture, the automated test system's backend connects both the valve control system and the test device, forming the core component of the automated test device for the flexible DC converter valve control system.

[0030] The automated test backend communicates directly with the test device via a custom UDP protocol to issue test commands and parameters, and to receive test data and waveform recordings. The automated test backend communicates with the valve control system under test (DUT) through an automated test gateway. The DUT gateway forwards data from the valve control chassis to the DUT and the automated test gateway via the IEC61850 or IEC104 protocol. The automated test gateway then forwards the received valve control data to the automated test backend via the MODBUS TCP protocol, thereby enabling monitoring and analysis of data changes during the DUT's testing process.

[0031] Figure 2 The diagram illustrates the design architecture of the automatic testing system's backend software, which is divided into a visual interface layer, a functional implementation layer, and a data layer. As shown, the visual interface layer includes test configuration and management, test case editing, operation command interaction, test process and result display, and test report management. The functional implementation layer is responsible for implementing the software's main functions, including reading configuration files, parsing communication protocols, issuing parameters, data analysis and its algorithm implementation, and generating test reports. The data layer includes various data that the automatic testing system's backend software needs to read and store, specifically including waveform data files, test configuration files, analysis result storage, report templates, and test reports.

[0032] Figure 3This is a design diagram of the visual interface layer of the automated testing system's backend software. The main interface features a menu bar and toolbar at the top, including functions for importing test project files, configuring test projects, configuring test cases, distributing test configurations, and starting / stopping tests. The left side uses a WinForms TreeView control to display a hierarchical collection of test projects, with each test project corresponding to a test case file. Nodes can be collapsed, expanded, or selected; all are selected by default. The middle area uses a ListView control to display key test data, test results, test progress, and reasons for test failures for each test project. Below, a RichTextBox control is used to output test process information and record process data in real time. The bottom features a taskbar that displays test time and communication indicator lights.

[0033] Implementation method of automatic testing system for flexible DC converter valve control system: like Figure 1 As shown, the present invention discloses an automatic testing system for a flexible DC converter valve control system, comprising an automatic testing system backend, an automatic testing gateway, and a testing device. The automatic testing system backend and the automatic testing gateway communicate using the Modbus TCP communication protocol. The automatic testing system backend connects to a corresponding switch via UDP communication, and the switch connects to the testing device. The testing device is a set of devices similar to the valve control system, also using the FCK series chassis, but a test and control chassis specifically designed for the valve control automatic testing system. The functions of the automatic testing system backend include test configuration and management, automatic test case generation, valve control communication monitoring and analysis, test process monitoring and analysis, test progress and test result display, waveform file generation, and test report generation.

[0034] The valve control system under test shown on the left is a schematic diagram of a typical valve control system, including the valve control system backend. The valve control system backend is connected to each valve control gateway via IEC communication. Each valve control gateway is connected to a corresponding switch, and each switch is connected to a corresponding FCK series chassis.

[0035] The automatic test system backend communicates with the valve control system under test through the automatic test gateway. The automatic test gateway receives the valve control chassis data of the valve control system under test, which is forwarded by the valve control gateway of the valve control system under test through the IEC61850 or IEC104 protocol. Then, it forwards the received valve control data to the automatic test system backend through the MODBUS TCP protocol, thereby realizing the monitoring and analysis of the test process of the valve control system under test.

[0036] The automatic test gateway also receives data from the valve control system under test. After processing the data, it interacts with the background of the automatic test system to verify both the FCK series chassis in the valve control system under test and the valve control gateway of the valve control system under test.

[0037] The automatic testing system backend establishes communication with the automatic testing device and automatic testing gateway of the automatic testing system, and combines the data returned by the testing device and the data of the automatic testing gateway to judge the test results.

[0038] The automatic testing system communicates directly with the testing device via the UDP protocol to issue test commands and parameters, as well as receive and judge test data.

[0039] The automated testing system automatically generates corresponding test instructions and stimuli based on preset test cases, and sends them to the valve control system under test and the testing device through the communication interface.

Claims

1. A method of automatic testing of a flexible DC converter valve control system, characterized in that, include: The automatic test system's backend communicates with the valve control system under test (VDT) through an automatic test gateway. The VDT's gateway forwards the VDT's control chassis data to the VDT's backend and the automatic test system's gateway via the IEC61850 or IEC104 protocol. The automatic test gateway then forwards the received valve control data to the automatic test system's backend via the MODBUS TCP protocol, thereby enabling monitoring and analysis of the VDT's testing process.

2. The automatic testing method for the flexible DC converter valve control system according to claim 1, characterized in that, The automatic test gateway also receives data from the valve control system under test. After processing the data, it interacts with the background of the automatic test system to verify both the FCK series chassis in the valve control system under test and the valve control gateway of the valve control system under test.

3. The automatic testing method for the flexible DC converter valve control system according to claim 1, characterized in that, The automatic testing system backend establishes communication with the automatic testing device and automatic testing gateway of the automatic testing system, and combines the data returned by the testing device and the data of the automatic testing gateway to judge the test results.

4. The automatic testing method for the valve control system of the flexible DC converter valve according to claim 3, characterized in that, The automatic testing system communicates directly with the testing device via the UDP protocol to issue test commands and parameters, as well as receive and judge test data.

5. The automatic testing method for the valve control system of the flexible DC converter valve according to claim 1, characterized in that, The automated testing system automatically generates corresponding test instructions and stimuli based on preset test cases, and sends them to the valve control system under test and the testing device through the communication interface.

6. An automatic testing system for a flexible DC converter valve control system, characterized in that, It includes an automatic test system backend, an automatic test gateway, and a test device; the automatic test system backend communicates with the valve control system under test through the automatic test gateway; the automatic test gateway receives the valve control chassis data of the valve control system under test, which is forwarded by the valve control gateway of the valve control system under test through the IEC61850 or IEC104 protocol, and then forwards the received valve control data to the automatic test system backend through the MODBUS TCP protocol, thereby realizing the monitoring and analysis of the test process of the valve control system under test.

7. The automatic testing system for the flexible DC converter valve control system according to claim 6, characterized in that, The automatic test gateway also receives data from the valve control system under test. After processing the data, it interacts with the background of the automatic test system to verify both the FCK series chassis in the valve control system under test and the valve control gateway of the valve control system under test.

8. The automatic testing system for the flexible DC converter valve control system according to claim 6, characterized in that, The automatic testing system backend establishes communication with the automatic testing device and automatic testing gateway of the automatic testing system, and combines the data returned by the testing device and the data of the automatic testing gateway to judge the test results.

9. The automatic testing system for the valve control system of the flexible DC converter valve according to claim 8, characterized in that, The automatic testing system communicates directly with the testing device via the UDP protocol to issue test commands and parameters, as well as receive and judge test data.

10. The automatic testing system for the valve control system of the flexible DC converter valve according to claim 8, characterized in that, The testing setup is similar to a valve control system and also uses an FCK series chassis.

11. The automatic testing system for the valve control system of the flexible DC converter valve according to claim 6, characterized in that, The automated testing system automatically generates corresponding test instructions and stimuli based on preset test cases, and sends them to the valve control system under test and the testing device through the communication interface.

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