CN113064826B - Automatic test platform of high-voltage SVG product based on RT-LAB - Google Patents
Automatic test platform of high-voltage SVG product based on RT-LAB Download PDFInfo
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- CN113064826B CN113064826B CN202110379102.9A CN202110379102A CN113064826B CN 113064826 B CN113064826 B CN 113064826B CN 202110379102 A CN202110379102 A CN 202110379102A CN 113064826 B CN113064826 B CN 113064826B
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- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3668—Software testing
- G06F11/3672—Test management
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- G—PHYSICS
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- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3668—Software testing
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to the technical field of simulation test, and discloses an automatic test platform of a high-voltage SVG product based on an RT-LAB (reverse transcription-laboratory). The automatic test platform comprises a main control server, a database server, an SVN server, a version construction server and an RT-LAB host, wherein the database server, the SVN server, the version construction server and the RT-LAB host are connected with the main control server, the RT-LAB host sequentially passes through a power amplifier and a line changing tool to be connected with a plurality of SVG products to be tested, the database server is used for storing test parameters, the SVN server is used for storing test scripts, the version construction server is used for compiling source codes of the SVG products to generate program packages, the line changing tool is used for loop switching of secondary analog quantity and switching quantity, and the main control server is used for controlling the RT-LAB host to simulate various test conditions of the SVG products to be tested by reading data in the version construction server and the SVG server to be tested.
Description
Technical Field
The invention relates to the technical field of simulation test, in particular to an automatic test platform for a high-voltage SVG product based on RT-LAB.
Background
With the increase of the duty ratio of new energy sources in a power grid, the problems of electric energy quality and reactive compensation are increasingly prominent due to the application of power grid alternating current-direct current technology and the use of a large number of high-capacity power electronic equipment. Dynamic reactive compensation generators (SVGs) are increasingly used because of their fast response speed and high power quality improvement functions, such as voltage flicker suppression and harmonic suppression. In the power electronic application industry, RT-LAB is used as a professional real-time simulation platform, is widely applied to research fields such as an inversion power grid, MMC, HVDC, FACTS and the like, and is an important technical means for performing simulation evaluation on a control algorithm, but the current testing method is mostly based on manual testing, requires a tester to click a button or modify parameters in the testing to simulate various actual faults, and waits for a long time for a testing result to be analyzed by data analysis software such as MATLAB and the like. However, this manual testing method is quite inefficient and most of the time and effort by the tester is wasted in repetitive operations.
Disclosure of Invention
The invention provides an automatic test platform for a high-voltage SVG product based on RT-LAB, which solves the problems that the existing test device mostly adopts manual test, the test time is long, the test efficiency is low and the like.
The invention can be realized by the following technical scheme:
the utility model provides an automatic test platform of high-pressure SVG product based on RT-LAB, includes the main control server, the main control server with database server, SVN server, version build server and with the RT-LAB host computer link to each other, the RT-LAB host computer loops through power amplifier, trade line frock and a plurality of SVG products that await measuring, the database server is used for depositing test parameters, SVN server is used for depositing test script, version build server is used for compiling SVG product source code and generates the program package, trade line frock setting is the equipment that possesses a large amount of switching value output for the return circuit switching of secondary analog quantity and switching value, the main control server is through reading the data in version build server, database server and the SVN server, and control RT-LAB host computer simulation is to await measuring a plurality of test conditions of SVG product, and is tested to await measuring SVG product, gathers the feedback information of SVG product that awaits measuring simultaneously, and saves test result to database server.
Further, the test script comprises a SVG device parameter configuration file, a test environment configuration file, a test execution script file and an RT-LAB host system model file;
the test parameters comprise a program version, a fixed value parameter, a numerical value of a test input quantity and an expected test result of the SVG equipment to be tested;
the test execution script file is a program file which is developed through a Pyhton language according to the test case and can be executed by a computer; the test input quantity comprises voltage and current analog quantity output by the power amplifier and switching value signals output by the RT-LAB host;
the main control server is used for reading the test script and the test parameters, executing the test script, controlling the RT-LAB host to output small signals, generating secondary analog signals through the power amplifier, and switching the secondary analog signals to the SVG product to be tested through the line changing tool.
Furthermore, the main control server refers to the RtlabApi file to realize the API interface call of the RT-LAB host, and directly calls the function of the RT-LAB host by using the Python code to realize the simulation of various working conditions of the system and the wave recording analysis of the system data.
Further, the test scripts are classified and managed according to universality and reusability; the test working conditions comprise a system voltage high-pass test, a system voltage low-pass test, a frequency crossing test and an action performance test of SVG equipment to be tested under a power system typical fault.
The beneficial technical effects of the invention are as follows:
by means of the main control server, the database server, the SVN server, the version construction server, the RT-LAB host and the automatic test platform constructed by the power amplifier and the line changing tool, the test of SVG products to be tested can be completed under various test working conditions such as high-voltage high-pass test, low-voltage low-pass test, frequency crossing test, action performance test of SVG equipment to be tested under the typical fault of a power system and the like, a large amount of manual operation is not needed, the test time is saved, and the test efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a hardware deployment of an automated test platform of the present invention;
FIG. 2 is a schematic diagram of a software architecture of an automated test platform according to the present invention;
FIG. 3 is a schematic diagram of a test script execution process of the automated test platform of the present invention;
fig. 4 is a schematic flow chart of a test execution stage of the automated test platform according to the present invention.
Detailed Description
The following describes in detail the embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the invention provides an automatic test platform for high-voltage SVG products based on RT-LAB, which comprises a main control server, wherein the main control server is connected with a database server, an SVN server, a version construction server and an RT-LAB host, the RT-LAB host is connected with a plurality of SVG products to be tested sequentially through a power amplifier and a line changing tool, the database server is used for storing test parameters, the SVN server is used for storing test scripts, the version construction server is used for compiling source codes of the SVG products to generate program packages, the line changing tool is a device which is developed by self-grinding and has a large number of switching value outputs and is used for loop switching of secondary analog quantity and switching value, the main control server is used for controlling the RT-LAB host to simulate various test conditions of the SVG products to be tested, simultaneously collecting feedback information of the SVG products to be tested and storing test results to the database server by reading data in the version construction server. In this way, by means of the main control server, the database server, the SVN server, the version construction server, the RT-LAB host, and the automatic test platform constructed by the power amplifier and the line changing tool, the test of SVG products to be tested under various test conditions such as high-voltage high-pass test, low-voltage low-pass test, frequency crossing test, action performance test of SVG equipment to be tested under the typical fault of the power system and the like can be completed, a large amount of manual operation is not needed, the test time is saved, and the test efficiency is improved.
The hardware deployment of the automatic test platform is shown in fig. 1, and consists of a main control server, an SVN server, a database server, a version construction server, an RT-LAB host, a power amplifier, a line changing tool and a plurality of SVG products to be tested, wherein the main control server is used as the core of the platform, and is respectively connected with each server and equipment in a test environment by adopting a network. In the preparation stage of the testing environment, the main control server controls the line changing tool to change the line automatically for the second time, the line changing tool is switched to the SVG product to be tested, the source code of the SVG product is obtained from the version construction server to be compiled to generate a program package, and the program package is issued to the SVG product to be tested; in the test execution stage, the main control server acquires test parameters from the database server, acquires test scripts from the SVN server, and controls the RT-LAB host to execute the test, wherein the test parameters are as follows:
because RT-LAB is a real-time simulation system of a Simulink platform based on MATLAB, a non-real-time simulation model of Simulink needs to be transformed into a real-time simulation model which can be identified by RT-LAB. According to the CPU core number of RT-LAB, an SM (System_Master) main System sub-module (Subsystem) can be constructed, a plurality of SS (System_Slave) Slave System sub-modules can not exceed the maximum configurable CPU core number of RT-LAB, and besides, an SC (System_Console) control System sub-module, namely a user interaction module, is needed to observe each output value and send out control signals.
The SM system mainly comprises an SVG model (composed of Modular Multilevel Converter, namely an MMC bridge, a breaker and a connecting reactor), an equivalent power grid model (composed of a generator, a transformer, a power transmission line, a load and fault simulation module), a calculation and signal transmission module, a wave recording module and a communication module (responsible for analog quantity and state quantity signal transmission between an RT-LAB host and SVG products); the SC system mainly comprises an observation module and a fault enabling module aiming at key analog quantity, and after the final model is constructed, RT-LAB model simulation is controlled through Python scripts.
The fault signal and the switch enable signal are used as a Control signal set (Control signal-Acquisition Group) to be transmitted to the SM subsystem by the SC subsystem through the Opcomm module, and the generation of the signals is mainly generated by a constant module of the model: the switching signal, mainly the external trigger signal of the breaker element, can be realized by modifying the constant module to be set to 0 or 1, and the analog quantity signal can be used for directly assigning the constant module. The specific data of the control signal set can be changed through a Python API command RtlabApi. Editing and establishing a test script library:
these test scripts are built on a company specific SVN server, the main content including:
(1) SVG device parameter configuration files;
(2) the platform tests an environment switching configuration file;
(3) testing an execution script file;
(4) RT-LAB host system model files;
the test script is a program file which is developed according to a test case through a Pyhton language and can be executed by a computer, in addition, the test script can be divided into two types according to universality and reusability, one type is a data processing script, such as RT-LAB model preparation, RT-LAB model operation, message packaging analysis and the like, the universality is strong, the execution steps are solidified, and a large amount of later modification is not needed; the other type is task execution script, such as configurable program segments of SVG product parameter modification to be tested, RT-LAB model parameter modification, etc., which may vary with model, test requirements and data set update, and thus require later heavy update and maintenance. As shown in fig. 3, when the data processing script is executed, all parameters are read from the database, and then the parameters are packed according to the communication address mapping, the parameter address mapping and the extraction classification of the device parameters and the model parameters, and are used as the identifiable input quantity in the task execution script; the task execution script configures a test environment according to the input quantity, calls the RT-LAB model to start executing test, logs the test process, analyzes the test data, outputs the test data to the data processing script and transmits the test data to the database.
Editing and building a test database:
these test data are built on company-specific database servers and are classified into the following 4 classes by field: the RT-LAB model modifies parameters, SVG to be tested modifies parameters, and the expected value of the test result and the actual value of the test result are tested. The method specifically comprises the following steps:
(1) version and fixed value parameters of SVG equipment to be tested;
(2) testing the numerical value of the input quantity;
(3) the expected result of the test;
(4) feedback information and test results of SVG products to be tested;
the test input quantity comprises analog quantities such as voltage, current and the like output by the power amplifier and switching value signals output by the RT-LAB host;
and finally, developing a platform control software through Python, installing the platform control software on a main control server connected with a database server, an SVN server, a version construction service, an RT-LAB host and SVG equipment to be tested, reading test scripts and test parameters by the main control server, executing the test scripts, controlling the RT-LAB host to output small signals, generating secondary analog signals through a power amplifier, and switching the secondary analog signals to the SVG product to be tested through a line changing tool. The API interface call of the RT-LAB host is realized by referring to the RtlabApi file in the platform main control program, and the RT-LAB function is directly called by the Python code, so that the simulation of various working conditions of the system and the wave recording analysis of the system data are realized.
The software architecture of the automatic test platform is shown in fig. 2, the test script file and the simulation model file are stored and managed through the SVN server, and the RT-LAB host configuration parameters and the SVG product fixed value parameters to be tested are managed through the database server. After detecting that the new version is constructed, the test platform firstly prepares for deployment of a test environment according to the version file name, wherein the test platform comprises comparison of SVG product names to be tested, acquisition of SVG product programs, acquisition of test scripts and acquisition of simulation model files; then the platform starts to deploy a testing environment, including controlling a line changing tool to switch SVG products to be tested, upgrading SVG product programs and the like; then all test scripts are executed in sequence; and finally, uploading the test result to a database for storage, and generating a test report by a tester through a corresponding tool of the database after the test is finished.
The single test script execution process is divided into three steps, firstly, preparation before test execution is carried out, including modification of SVG product parameters, such as control modes and control parameters, then an RT-LAB host is controlled to compile, load and operate a simulation model, a start command is sent to a controller, secondly, after the SVG product is put into operation, a platform simulates various fault scenes of a system in a mode of modifying parameters in the RT-LAB model, meanwhile, during the fault occurrence period, each path of analog quantity and switching value data in the system are saved as mat files through starting an RT-LAB wave recording function, meanwhile, fault events and wave recording files of the SVG product to be tested are read, finally test result judgment and test parameter recovery are carried out, analysis is carried out on the wave recording data of the RT-LAB host and data sent by a device, the final test result is obtained through comparison with expected data in a database, and the final test result is uploaded to the database for saving. In the test execution process, a tester can query a database through a database management system, know the test progress and the test data, and generate a final test report after the test is finished.
After a new version to be tested is built, a test task scheduling module of the platform firstly judges whether test conditions are met, test parameters are obtained from a database server respectively if the test conditions are met, a test script is obtained from an SVN server, then a task execution module deploys a test environment comprising line replacement of equipment to be tested, downloading of a program to be tested, then an RT-LAB model is called to start executing a test, various fault scenes of the system are simulated, meanwhile test data are analyzed, the test data and test results are stored in the database, and finally after all scripts are executed, a tester can check the test results through a database management system and generate a test report.
The flow chart of the test execution process is shown in fig. 4, firstly, the system will realize the deployment of the test environment through the test tool, and the decoupling of the test execution process can be decomposed into a curing module for model preparation, device operation and model shutdown and a configurable module for test script execution. Because the device can be reset after the model is restarted after tripping, test scripts are divided into two types, namely a test which can not trigger the device to lock and trip after executing and a test which can trigger the device to lock and trip after executing. After the execution of the single test script is finished, the running state of the device can be checked through serial port or network cable communication, and if the device runs normally, the next script can be executed without warning or faults, and the operations of restarting the model and resetting the device are not needed.
Analysis and recording of test results: the main control server collects all feedback information and test results, wherein the feedback information comprises SVG products to be tested and an RT-LAB host, the SVG products to be tested can feed back event records, deflection information, wave recording data and the like generated in the test process, the RT-LAB host can record analog output waveforms of all channels of the system before and after faults occur, action contact deflection information of equipment to be tested and the like, the main control server compares and judges the feedback information, the test results and expected results to realize closed loop test, when the difference between the test results and the expected results meets the passing criterion, the conclusion of 'test passing' is obtained, otherwise, the conclusion of 'test failure' is obtained and stored in the database server;
the expected result is stored in the database server, and after the test is finished, the main control server is used for referencing a group of data for comparing whether the test result of the SVG product to be tested is correct, including contact action information, event record, wave recording information and the like of the SVG product to be tested.
While particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely illustrative, and that many changes and modifications may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (4)
1. An automatic test platform of high-pressure SVG product based on RT-LAB, its characterized in that: the system comprises a main control server, wherein the main control server is connected with a database server, an SVN server, a version construction server and an RT-LAB host, the RT-LAB host is connected with a plurality of SVG products to be tested sequentially through a power amplifier and a line changing tool, the database server is used for storing test parameters, the SVN server is used for storing test scripts, the version construction server is used for compiling source codes of the SVG products to generate program packages, the line changing tool is set to equipment with a large number of switching value outputs and used for loop switching of secondary analog values and switching values, the main control server controls the RT-LAB host to simulate various test working conditions of the SVG products to be tested, meanwhile collects feedback information of the SVG products to be tested, and stores test results to the database server.
2. The automated testing platform for RT-LAB-based high-voltage SVG products of claim 1, wherein: the test script comprises an SVG device parameter configuration file, a platform test environment configuration file, a test execution script file and an RT-LAB host system model file;
the test parameters comprise a program version, a fixed value parameter, a numerical value of a test input quantity and an expected test result of the SVG equipment to be tested;
the test execution script file is a program file which is developed through a Pyhton language according to the test case and can be executed by a computer; the test input quantity comprises voltage and current analog quantity output by the power amplifier and switching value signals output by the RT-LAB host;
the main control server is used for reading the test script and the test parameters, executing the test script, controlling the RT-LAB host to output small signals, generating secondary analog signals through the power amplifier, and switching the secondary analog signals to the SVG product to be tested through the line changing tool.
3. The automated testing platform for RT-LAB-based high-voltage SVG products of claim 1, wherein: the main control server refers to the RtlabApi file, so that the API interface call of the RT-LAB host is realized, the function of the RT-LAB host is directly called by a Python code, and the simulation of various working conditions of the system and the wave recording analysis of system data are realized.
4. The automated testing platform for RT-LAB-based high-voltage SVG products of claim 2, wherein: the test scripts are classified and managed according to universality and reusability; the test working conditions comprise a system voltage high-pass test, a system voltage low-pass test, a frequency crossing test and an action performance test of SVG equipment to be tested under a power system typical fault.
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| CN113655316A (en) * | 2021-08-17 | 2021-11-16 | 南京智睿能源互联网研究院有限公司 | Low-voltage SVG equipment test system based on serial port communication technology |
| CN114485778B (en) * | 2021-12-27 | 2023-07-14 | 广州高澜节能技术股份有限公司 | Automatic checking device and method for FACTS cooling equipment |
| CN114792982B (en) * | 2022-06-21 | 2022-09-06 | 新风光电子科技股份有限公司 | Reactive power compensation system coordination control method based on MCR and SVG |
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