Substation measurement and control device synchronous function simulation test method and device, computer equipment and storage medium

Abstract

The invention is suitable for the technical field of power systems, and provides a transformer substation measurement and control device synchronous function simulation test method and device, computer equipment and a storage medium, and the transformer substation measurement and control device synchronous function simulation test method comprises the steps: obtaining AC sampling information and synchronous configuration parameters; performing simulation logic traversal based on the alternating current sampling information and the synchronous configuration parameters to generate a test case; wherein the simulation logic traversal comprises non-pressure detection condition traversal, quasi-synchronization condition traversal and loop closing condition traversal; and performing a simulation test based on the test case so as to obtain an accurate synchronous function simulation test result.

Description

Technical Field

[0001] The present application belongs to the technical field of electric power systems, and in particular, relates to a method, device, computer equipment and storage medium for simulating the synchronous function of a substation measurement and control device. Background Art

[0002] With the rapid development of power systems, the reliability and safety of power systems are increasingly concerned. Among them, the synchronization function is a key technology in power systems. It ensures that two or more power systems can match each other when they are electrically connected, including voltage amplitude, frequency and phase. In addition, the synchronization function is also particularly important in power system fault recovery, generator grid connection and tie line operation between power grids. However, the traditional on-site test of the synchronization function relies on the experience of the tester. The tester is unfamiliar with the synchronization operation of the measurement and control device or misoperates it, which may lead to inaccurate test results. Summary of the invention

[0003] The embodiments of the present application provide a method, device, computer equipment and storage medium for simulating the synchronous functions of a substation measurement and control device, which can solve the technical problems in the prior art of inaccurate synchronous function simulation test results, increased risk of grid instability, and even equipment damage or grid accidents.

[0004] In a first aspect, an embodiment of the present application provides a method for simulating and testing the synchronization function of a substation measurement and control device, comprising:

[0005] Obtain AC sampling information and synchronous configuration parameters;

[0006] Performing simulation logic traversal based on the AC sampling information and the synchronous configuration parameters to generate test cases; wherein the simulation logic traversal includes no-pressure condition traversal, quasi-synchronous condition traversal and closed-loop condition traversal;

[0007] A simulation test is performed based on the test case to generate a simulation test result.

[0008] In a possible implementation manner of the first aspect, the performing simulation logic traversal based on the AC sampling information and the synchronous configuration parameters also includes:

[0009] The AC sampling information and the synchronous configuration parameters are verified to obtain verified AC sampling information and synchronous configuration parameters.

[0010] In a possible implementation manner of the first aspect, performing simulation logic traversal based on the AC sampling information and the synchronous configuration parameters to generate a test case includes:

[0011] Performing a voltage condition judgment; wherein the result of the voltage condition judgment includes a result that the voltage meets the preset condition and a result that the voltage does not meet the preset condition;

[0012] When the result of the voltage condition judgment is that the voltage does not meet the preset condition result, the voltage-free condition traversal is performed to generate a test case;

[0013] When the result of the voltage condition judgment is that the voltage meets the preset condition result, a synchronous judgment is performed; wherein the result of the synchronous judgment includes the result that the frequency meets the preset condition result and the result that the frequency does not meet the preset condition result;

[0014] When the result of the simultaneous judgment is that the frequency meets the preset conditions, the closed loop and closed condition traversal is performed to generate a test case;

[0015] When the result of the synchronous judgment is that the frequency does not meet the preset condition result, a quasi-synchronous condition traversal is performed to generate a test case.

[0016] In a possible implementation of the first aspect, the no-voltage condition traversal includes: at least one of: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, and no-voltage judgment on at least one side of the system side or the synchronous side;

[0017] Quasi-synchronous condition traversal, including: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, voltage difference less than voltage difference fixed value judgment, frequency difference less than frequency difference fixed value judgment, frequency change rate difference less than slip fixed value judgment, closing angle less than synchronous closing angle fixed value judgment, and at least one of the following: synchronous condition establishment judgment within the whole group reset time;

[0018] The closing conditions of the loop are traversed, including: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, voltage difference is less than the voltage difference set value judgment, frequency difference is less than the frequency difference set value judgment, frequency change rate difference is less than the slip set value judgment, and angle difference is less than the angle set value judgment. At least one of them.

[0019] In a possible implementation manner of the first aspect, after traversing the quasi-contemporaneous conditions, the method further includes:

[0020] Based on the logic judgment time, the whole set of reset parameters and the closing angle parameters, the whole set of reset parameters and / or the closing angle parameters are adjusted.

[0021] In a possible implementation manner of the first aspect, adjusting the whole set of reset parameters based on the logic judgment time, the whole set of reset parameters, and the closing angle parameters includes:

[0022] If the whole set of reset parameters is less than the preset reset value, and the logic judgment time is greater than or equal to the whole set of reset parameters, then increase the whole set of reset parameters;

[0023] If the entire set of reset parameters is greater than or equal to the preset reset value, and the logic judgment time is greater than or equal to the preset reset value, the closing angle parameter is increased.

[0024] In a second aspect, an embodiment of the present application provides a synchronous function simulation test device for a substation measurement and control device, comprising:

[0025] Standard client module, used to obtain AC sampling information and synchronous configuration parameters;

[0026] A synchronous simulation logic module is used to perform simulation logic traversal based on the AC sampling information and the synchronous configuration parameters; wherein the simulation logic traversal includes a no-pressure condition traversal, a quasi-synchronous condition traversal, and a closed-loop condition traversal;

[0027] The test report generation module is used to perform simulation testing based on the test case and generate simulation test results.

[0028] In a third aspect, an embodiment of the present application provides a computer device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the synchronous function simulation test method of the substation measurement and control device described in any one of the first aspects above is implemented.

[0029] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the synchronous function simulation test method of the substation measurement and control device described in any one of the above-mentioned first aspects.

[0030] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product runs on a computer device, the computer device executes the synchronous function simulation test method of the substation measurement and control device described in any one of the above-mentioned first aspects.

[0031] In an embodiment of the present application, AC sampling information and synchronization configuration parameters are obtained; simulation logic traversal is performed based on the AC sampling information and the synchronization configuration parameters to generate test cases; wherein the simulation logic traversal includes no-voltage condition traversal, quasi-synchronous condition traversal and closed-loop condition traversal; simulation testing is performed based on the test cases to obtain synchronization function simulation test results. Among them, no-voltage condition traversal, quasi-synchronous condition traversal and closed-loop condition traversal are performed, and these traversals cover all key conditions for synchronization operation, ensuring that the equipment can respond correctly under various possible power grid states, and various actual possible working conditions can be simulated through simulation testing, so that accurate synchronization function simulation test results can be obtained.

[0032] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 It is a flowchart of a method for simulating the synchronous function of a substation measurement and control device provided in an embodiment of the present application;

[0035] Figure 2 It is a flowchart of a method for simulating the synchronous function of a substation measurement and control device provided in another embodiment of the present application;

[0036] Figure 3 It is a flowchart of a method for simulating the synchronous function of a substation measurement and control device provided in another embodiment of the present application;

[0037] Figure 4 It is a flowchart of a method for simulating the synchronous function of a substation measurement and control device provided in another embodiment of the present application;

[0038] Figure 5 It is a structural diagram of a synchronous function simulation test device for a substation measurement and control device provided in an embodiment of the present application;

[0039] Figure 6 is an information interaction diagram between a client module and a measurement and control device provided in an embodiment of the present application;

[0040] Figure 7 It is the HMI main interface of the simulation process provided in the embodiment of the present application;

[0041] Figure 8 It is a schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0043] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0044] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0045] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0046] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0047] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0048] The synchronization function is also particularly important in the fault recovery of the power system, the connection of generators to the grid, and the operation of the tie lines between the power grids. However, the traditional on-site test of the synchronization function relies on the experience of the tester. The tester is not familiar with the synchronization operation of the measurement and control device or misoperates it, which may lead to inaccurate test results and even cause equipment damage or power grid accidents. In addition, the on-site test equipment cannot fully simulate the actual operating conditions, such as grid disturbances, load changes, etc., which may cause the system to misjudge the timing of grid connection and increase the risk of grid instability.

[0049] Among them, the above-mentioned synchronization function, also known as the grid connection function or synchronization function, is a key technology in the power system. It ensures that two or more power systems can match each other when they are electrically connected (such as the closing of power lines), and completes the synchronous closing operation of the circuit breaker through the measurement and control device to ensure the safety and stable operation of the power system. Specifically, it includes voltage synchronization, frequency synchronization and phase synchronization. Specifically: voltage synchronization, keeping the output voltage of the power supply equal to the grid voltage, which is achieved by adjusting the output voltage of the generator or power supply equipment; frequency synchronization, by monitoring and adjusting the output frequency of the power supply to keep it consistent with the frequency of the grid to achieve frequency synchronization; phase synchronization, ensuring that the output phase of the power supply is consistent with the phase of the grid, which is usually achieved by comparing the phase difference between the voltage output by the power supply and the system voltage, and controlling the phase modulation circuit of the power supply.

[0050] To solve the above problems, the present application provides a simulation test method that can test the actual synchronous closing and tripping conditions without introducing real power grid risks. Through the synchronous closing simulation test, the simulation test of no-voltage, quasi-synchronous, and closed-loop under the specific voltage, frequency, phase, and frequency change rate of the substation can be simulated.

[0051] Figure 1 The schematic flow chart of a synchronous function simulation test method of a substation measurement and control device provided by the present application is shown. The synchronous function simulation test method of the substation measurement and control device is implemented based on synchronous simulation software. Specifically, it includes the following steps.

[0052] S101, obtaining AC sampling information and synchronization configuration parameters.

[0053] The AC sampling information includes but is not limited to: three-phase voltage on the system side, three-phase current on the system side, voltage on the synchronous side, system measured frequency, synchronous side frequency, system measured reference phase angle, synchronous side reference phase angle, etc.

[0054] The synchronization configuration parameters include but are not limited to: rated secondary voltage on the system side, rated secondary voltage on the synchronization side, voltage set value, no-voltage set value, slip set value, angle difference set value, pressure difference set value, frequency difference set value, circuit breaker closing time, synchronization group reset time, etc.

[0055] S102, performing simulation logic traversal based on the AC sampling information and the synchronous configuration parameters to generate a test case.

[0056] The simulation logic traversal includes the no-voltage condition traversal, the quasi-synchronous condition traversal and the closed-loop condition traversal, so as to ensure that the equipment in the power system (such as synchronous devices, etc.) can correctly perform its functions under various conditions.

[0057] The purpose of the no-voltage condition traversal is to verify whether the device can correctly detect the no-voltage state and make appropriate responses when there is no voltage or the voltage is lower than the safety threshold, including disconnecting the switch, sounding an alarm, or recording the event.

[0058] Quasi-synchronous condition traversal simulates the situation where the voltage and frequency are close but not yet completely synchronized. In this state, the equipment needs to be able to identify whether the voltage and frequency of the two power grids are close enough to safely perform synchronous operation.

[0059] The closing condition traversal is carried out under the condition that the voltage, frequency and phase angle are completely synchronized. In this ideal state, the equipment should be able to perform the closing operation, that is, to safely connect the two power grids together.

[0060] During these traversals, the simulation software generates a series of test cases, each of which simulates a specific operating condition. By executing these test cases and analyzing the results, the performance and reliability of the equipment under various conditions can be verified. This ensures that in actual grid operation, the equipment can correctly perform its functions under various possible conditions, thereby ensuring the safety and stability of the grid.

[0061] S103: Perform simulation test based on the test case and generate simulation test results.

[0062] A test case is a set of conditions or scenarios used to verify that a specific function, operation, or system works as expected. It usually includes the test steps, expected results, test data, and any specific configurations. A test case is part of a test plan and is used to guide test execution.

[0063] The simulation test results are the actual output after executing the test case, which is compared with the expected results defined in the test case. It is usually used to evaluate the quality of software or equipment, etc., to determine whether the test objectives are met, and as a basis for decision-making on whether a part of a product or system can be accepted.

[0064] In an embodiment of the present application, AC sampling information and synchronization configuration parameters are obtained; simulation logic traversal is performed based on the AC sampling information and the synchronization configuration parameters to generate test cases; wherein the simulation logic traversal includes no-voltage condition traversal, quasi-synchronous condition traversal and closed-loop condition traversal; simulation testing is performed based on the test cases to obtain synchronization function simulation test results. Among them, no-voltage condition traversal, quasi-synchronous condition traversal and closed-loop condition traversal are performed, and these traversals cover all key conditions for synchronization operation, ensuring that the equipment can respond correctly under various possible power grid states, and various actual possible working conditions can be simulated through simulation testing, so that accurate synchronization function simulation test results can be obtained.

[0065] In an optional embodiment, the performing simulation logic traversal based on the AC sampling information and the synchronous configuration parameters also includes:

[0066] The AC sampling information and the synchronous configuration parameters are verified to obtain verified AC sampling information and synchronous configuration parameters.

[0067] In the embodiment of the present application, after obtaining the AC sampling information and the synchronous configuration parameters, the integrity of the AC sampling information and the synchronous parameter information is automatically checked to prevent information loss and overflow, which may cause the simulation to be invalid. After the verification is successful, the simulation logic traversal process is automatically started.

[0068] In an optional embodiment, S102 performs simulation logic traversal based on the AC sampling information and the synchronous configuration parameters to generate a test case, including:

[0069] a, performing voltage condition judgment; wherein the result of voltage condition judgment includes the result that the voltage meets the preset condition and the result that the voltage does not meet the preset condition;

[0070] b. When the result of the voltage condition judgment is that the voltage does not meet the preset condition, the no-voltage condition traversal is performed to generate a test case;

[0071] c. When the result of the voltage condition judgment is that the voltage meets the preset condition, a synchronous judgment is performed; wherein the result of the synchronous judgment includes the result that the frequency meets the preset condition and the result that the frequency does not meet the preset condition;

[0072] d. When the result of the simultaneous judgment is that the frequency meets the preset conditions, a closed loop and closed condition traversal is performed to generate a test case;

[0073] e. When the result of the synchronous judgment is that the frequency does not meet the preset condition result, a quasi-synchronous condition traversal is performed to generate a test case.

[0074] In order to facilitate understanding, Figure 2 First, call the synchronous data, including AC sampling information and synchronous configuration parameters. Then start the traversal, first execute a, and perform the voltage condition judgment. The result of the voltage condition judgment includes the result that the voltage meets the preset conditions and the result that the voltage does not meet the preset conditions. When the result of the voltage condition judgment is that the voltage does not meet the preset conditions (corresponding to Figure 2 When the voltage condition is judged as no, a voltage-free condition is traversed to generate a test case. Figure 2If the frequency is in the same frequency condition, further synchronization judgment is performed. First, the same frequency condition judgment is performed, and the judgment results include the frequency meeting the preset condition result and the frequency not meeting the preset condition result. When the judgment result is that the frequency meets the preset condition result (corresponding to Figure 2 If the frequency does not meet the preset condition result (corresponding to Figure 2 If the answer is no in the test result list, a quasi-synchronous judgment is performed, that is, a quasi-synchronous condition traversal is performed to generate a test case.

[0075] In an optional embodiment, the no-voltage condition traversal includes: at least one of: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, and no-voltage judgment on at least one side of the system side or the synchronous side;

[0076] Quasi-synchronous condition traversal, including: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, voltage difference less than voltage difference fixed value judgment, frequency difference less than frequency difference fixed value judgment, frequency change rate difference less than slip fixed value judgment, closing angle less than synchronous closing angle fixed value judgment, and at least one of the following: synchronous condition establishment judgment within the whole group reset time;

[0077] The closing conditions of the loop are traversed, including: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, voltage difference is less than the voltage difference set value judgment, frequency difference is less than the frequency difference set value judgment, frequency change rate difference is less than the slip set value judgment, and angle difference is less than the angle set value judgment. At least one of them.

[0078] For ease of understanding, here we combine Figure 3 The analog quantity quality is judged. If the analog quantity quality is not satisfactory to the preset quality condition, a first test case is generated (the first test case is Figure 3 The test cases (i.e. test cases) in the test are as follows: invalid sampling value on the system side is locked to check for no pressure, invalid sampling value on the synchronous side is locked to check for no pressure, sampling value on the system side is locked to check for no pressure for maintenance, and sampling value on the synchronous side is locked to check for no pressure for maintenance). If the quality of the analog quantity meets the preset quality condition, the system side voltage transformer PT line break logic judgment is performed. If the PT line break logic judgment result does not meet the preset PT line break condition, a second test case (system side PT line break lockout check for no pressure) is generated. If the PT line break logic judgment result meets the preset PT line break condition, a no-pressure judgment is performed on at least one side of the system side or the synchronous side. If the no-pressure judgment result does not meet the preset no-pressure condition, a third test case is generated (system side has pressure, synchronous side has pressure lockout check for no pressure). If the no-pressure judgment result meets the preset no-pressure condition, a fourth test case is generated (system side has pressure, synchronous side has no pressure check for no pressure condition is met, system side has pressure, synchronous side has pressure check for no pressure condition is met, system side has no pressure, synchronous side has no pressure check for no pressure condition is met).

[0079] To facilitate the automatic generation of test cases, the traversal conditions are also modularly designed, that is, each module is responsible for judging a logical condition of synchronization. The traversal is based on the judgment of pressure conditions and the judgment of the same frequency conditions. The synchronization simulation is divided into three traversal directions, namely, the traversal of the no-pressure condition, the traversal of the quasi-synchronous condition, and the traversal of the closed-loop condition. According to the traversal conditions, test cases are generated separately according to the two situations of whether the conditions are met or not.

[0080] In addition, the logic traversal fully considers the quality of analog data, that is, conditional traversal is performed on analog inspection and invalid quality.

[0081] In addition, only some test case generation methods are described. Figure 3 For more information about other concurrent traversal test cases, see Figure 3 This is not a complete list.

[0082] In an optional embodiment, after the quasi-contemporaneous condition traversal, the method further includes:

[0083] Based on the logic judgment time, the whole set of reset parameters and the closing angle parameters, the whole set of reset parameters and / or the closing angle parameters are adjusted.

[0084] Among them, the logical judgment time is the time when the synchronization parameter calibration is started until the phase angle difference Δφ satisfies |Δφ-φ dq |<φ zd time.

[0085] In an embodiment of the present application, if the entire set of reset parameters is less than the preset reset value and the logic judgment time is greater than or equal to the entire set of reset parameters, the entire set of reset parameters is increased; if the entire set of reset parameters is greater than or equal to the preset reset value and the logic judgment time is greater than or equal to the preset reset value, the closing angle parameter is increased.

[0086] For ease of understanding, here we combine Figure 4 Provide explanation.

[0087] The quasi-synchronous closing of the circuit breaker has the functions of frequency difference locking, pressure difference locking, angle difference locking, and frequency difference acceleration locking. Among them, the angle difference needs to consider the influence of the leading closing angle, which can be obtained by the following calculation: Where Δf is the frequency difference, T dq is the action time of the circuit breaker closing circuit, is the frequency difference acceleration.

[0088] The phase angle difference Δφ on the system side and the synchronous side satisfies Δφ-φ dq |<φ zd(Formula 2) is met when closing the circuit breaker, which can meet the setting requirements. The synchronous closing of the circuit breaker should be completed within the reset time tZZF of the whole group. If the closing is still unsuccessful after the reset time of the whole group has expired, the synchronization is terminated. The synchronous simulation software first calibrates the reset time tZZF of the whole group. After starting the function, it obtains the current setting value of tZZF. If tZZF<55S (the maximum threshold is 60S, and a certain margin is reserved), according to Formula 1, calculate the logic judgment time t required to meet Formula 2. If t is greater than tZZF, increase the setting value of the reset time tZZF of the whole group, fine-tune it by 1S each time, and restart the statistics of the logic judgment time t; if t is less than tZZF, the current parameters meet the quasi-synchronous closing; when tZZF is set to 55S, the logic judgment time t is still greater than tZZF, then start fine-tuning the closing angle parameter φ zd , fine-tune 1° each time, and restart the statistics of the logic judgment time t. If t is less than 55S, the current parameters meet the quasi-synchronous closing condition, and the parameter calibration process ends. zd If the fine adjustment to 60° (maximum threshold is 60°) still fails to meet the condition that the logic judgment time t is less than 55S, the parameter calibration process ends and the alarm message "Current AC data cannot meet the quasi-synchronous closing" is generated. When the quasi-synchronous closing is met, the adjusted reset parameter tZZF and closing angle parameter φ are displayed in the simulation test results. zd .

[0089] In an embodiment of the present application, based on the logic judgment time, the whole set of reset parameters, and the closing angle parameters, the whole set of reset parameters and / or the closing angle parameters are adjusted, and the synchronous closing failure caused by the artificially set empirical parameters is avoided by simulating and calibrating the synchronous parameters.

[0090] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0091] Corresponding to the synchronous function simulation test method of the substation measurement and control device described in the above embodiment, Figure 5 A structural block diagram of a synchronous function simulation test device for a substation measurement and control device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0092] Reference Figure 5 The synchronous function simulation test device of the substation measurement and control device includes:

[0093] Standard client module, used to obtain AC sampling information and synchronous configuration parameters;

[0094] A synchronous simulation logic module is used to perform simulation logic traversal based on the AC sampling information and the synchronous configuration parameters; wherein the simulation logic traversal includes a no-pressure condition traversal, a quasi-synchronous condition traversal, and a closed-loop condition traversal;

[0095] The test report generation module is used to perform simulation testing based on the test case and generate simulation test results.

[0096] In an optional embodiment, the device further comprises: a configuration file reading and writing module, a database server linking module and a simulation client module;

[0097] The configuration file reading and writing module is used to store or call the AC sampling information, the synchronous parameter information, the test case and the simulation test result;

[0098] The database server link module is used to call the application database interface through the configuration file reading and writing module to implement storage and reading operations on the data in the application database;

[0099] The simulation client module is used to display the simulation test process and simulation test results.

[0100] Among them, as mentioned above, the synchronous function simulation test method of the substation measurement and control device is implemented based on the synchronous simulation software. The synchronous simulation software adopts a modular design architecture and is divided into six modules according to its functions, including: standard client module (DL / T860 client module), configuration file reading and writing module, synchronous simulation logic module, database server link module, test report generation module and simulation client module.

[0101] Among them, Figure 6 As shown, the DL / T860 client module communicates with the station control layer switch through the DL / T860 communication rules, thereby communicating with the measurement and control device. Through the MMS general call message, the DL / T860 client module can obtain the AC sampling information and synchronous parameter information of the measurement and control device. Among them, the AC sampling information here can be telemetry information, and the synchronous parameter information can be teleparameter information.

[0102] The configuration file reading and writing module is used to store and call relevant data in the simulation process, such as AC sampling information, synchronous parameter information, simulation test case information, simulation result information, etc.

[0103] The synchronous simulation logic module includes functions such as synchronous logic traversal, synchronous logic inversion, and synchronous result analysis.

[0104] The database server link module is used to interact with the application database of the PC simulation platform. The implementation method is to call the application database interface through the configuration file read and write module to realize the storage and reading operations of the application database.

[0105] The test report generation module is used to automatically generate simulation test reports.

[0106] The simulation client module is used to provide a human-machine interface for real-time display of simulation test processes and test reports, such as Figure 7 As shown, Figure 7 The HMI interface is displayed in real time after the software starts the simulation test.

[0107] Among them, the synchronous simulation logic module obtains AC sampling information and synchronous parameter information by configuring the buffer area. The synchronous simulation logic module will automatically check the integrity of the AC sampling information and synchronous parameter information to prevent information loss and overflow, which will cause the simulation to be invalid. After the verification is successful, the synchronous simulation logic module automatically starts the simulation logic traversal process. The traversal is based on the pressure condition judgment and the same frequency condition judgment. The synchronous simulation is divided into three traversal directions, namely, the pressure-free condition traversal, the quasi-synchronous condition traversal, and the closed-loop condition traversal, and the test cases are automatically generated according to the traversal conditions. The synchronous simulation software can realize the traversal of the synchronous simulation logic and automatically generate test cases through modular design.

[0108] Among them, after traversing the simulation logic at the same time, a test case is generated, which can be displayed on the simulation software client after being processed by the simulation client module.

[0109] Test cases are displayed in the form of use case sets, which can be divided into multi-level menus, such as the three-level menu, namely [Synchronous Functional Test] -> [Synchronous Mode Test] -> [Single Point Test Case]. The operator can perform single-point test on the test case, or perform one-click test in the use case set mode. '√' indicates a passed test, and '×' indicates a failed test. The operator can also view the simulation test results in the "Test Result" column.

[0110] The solution based on the present application can effectively simulate actual working conditions in a laboratory environment to ensure that the synchronization function of the substation measurement and control device can work stably and reliably under various power grid conditions; in addition, the synchronization simulation software adopts a modular design architecture and an interface and mode similar to the WINDOWS system resource manager, which is easy and fast to operate. The synchronization simulation software can be flexibly deployed in cloud services, local servers or personal computers; the various functions of the synchronization simulation software can be operated through the system main menu, toolbar icons, right-click pop-up menus, shortcut keys and other methods, and can simulate the simulation tests of no-pressure inspection, quasi-synchronization, and closed-loop testing in the complex environment of the substation, to achieve comprehensive coverage of the synchronization functions.

[0111] In a possible implementation, the synchronous simulation logic module is used to:

[0112] Performing a voltage condition judgment; wherein the result of the voltage condition judgment includes a result that the voltage meets the preset condition and a result that the voltage does not meet the preset condition;

[0113] When the result of the voltage condition judgment is that the voltage does not meet the preset condition result, the voltage-free condition traversal is performed to generate a test case;

[0114] When the result of the voltage condition judgment is that the voltage meets the preset condition result, a synchronous judgment is performed; wherein the result of the synchronous judgment includes the result that the frequency meets the preset condition result and the result that the frequency does not meet the preset condition result;

[0115] When the result of the simultaneous judgment is that the frequency meets the preset conditions, the closed loop and closed condition traversal is performed to generate a test case;

[0116] When the result of the synchronous judgment is that the frequency does not meet the preset condition result, a quasi-synchronous condition traversal is performed to generate a test case.

[0117] In a possible implementation, the no-voltage condition traversal includes: at least one of: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, and no-voltage judgment on at least one side of the system side or the synchronous side;

[0118] Quasi-synchronous condition traversal, including: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, voltage difference less than voltage difference fixed value judgment, frequency difference less than frequency difference fixed value judgment, frequency change rate difference less than slip fixed value judgment, closing angle less than synchronous closing angle fixed value judgment, and at least one of the following: synchronous condition establishment judgment within the whole group reset time;

[0119] The closing conditions of the loop are traversed, including: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, voltage difference is less than the voltage difference set value judgment, frequency difference is less than the frequency difference set value judgment, frequency change rate difference is less than the slip set value judgment, and angle difference is less than the angle set value judgment. At least one of them.

[0120] In a possible implementation, the device further includes an adjustment module for adjusting the entire set of reset parameters and / or the closing angle parameter based on a logic judgment time, the entire set of reset parameters, and the closing angle parameter.

[0121] In a possible implementation, the adjustment module is used to:

[0122] If the whole set of reset parameters is less than the preset reset value, and the logic judgment time is greater than or equal to the whole set of reset parameters, then increase the whole set of reset parameters;

[0123] If the entire set of reset parameters is greater than or equal to the preset reset value, and the logic judgment time is greater than or equal to the preset reset value, the closing angle parameter is increased.

[0124] It should be noted that the information interaction, execution process and other contents between the above-mentioned modules are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0125] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0126] An embodiment of the present application also provides a computer device, which includes: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor implements the steps in any of the above-mentioned method embodiments when executing the computer program.

[0127] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0128] An embodiment of the present application provides a computer program product. When the computer program product runs on a mobile terminal, the mobile terminal can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0129] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0130] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0131] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0132] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0133] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0134] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

[0135] Figure 8 This is a schematic diagram of the structure of a computer device provided in one embodiment of the present application. Figure 8 As shown, the computer device of this embodiment includes: at least one processor 20 ( Figure 8 Only one is shown), a memory 21 and a computer program 22 stored in the memory 21 and executable on the at least one processor 20, wherein the processor 20 implements the steps in any of the above-mentioned embodiments of the method for simulating the synchronous function of the substation measurement and control device when executing the computer program 22.

[0136] The computer device may include, but is not limited to, a processor 20 and a memory 21. Those skilled in the art will appreciate that Figure 8 It is only an example of a computer device and does not constitute a limitation of the computer device. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, it may also include input and output devices, network access devices, etc.

[0137] The processor 20 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0138] In some embodiments, the memory 21 may be an internal storage unit of the computer device, such as a hard disk or memory of the computer device. In other embodiments, the memory 21 may also be an external storage device of the computer device, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the computer device. Further, the memory 21 may also include both an internal storage unit of the computer device and an external storage device. The memory 21 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 21 may also be used to temporarily store data that has been output or is to be output.

[0139] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for simulating the synchronous function of a substation measurement and control device, characterized in that: include: Obtain AC sampling information and synchronous configuration parameters; Performing simulation logic traversal based on the AC sampling information and the synchronous configuration parameters to generate test cases; wherein the simulation logic traversal includes no-pressure condition traversal, quasi-synchronous condition traversal and closed-loop condition traversal; A simulation test is performed based on the test case to generate a simulation test result.

2. The method for simulating the synchronous function of the substation measurement and control device according to claim 1, characterized in that: The simulation logic traversal based on the AC sampling information and the synchronous configuration parameters also includes: The AC sampling information and the synchronous configuration parameters are verified to obtain verified AC sampling information and synchronous configuration parameters.

3. The synchronous function simulation test method of the substation measurement and control device according to claim 1 is characterized in that: The performing simulation logic traversal based on the AC sampling information and the synchronous configuration parameters to generate a test case includes: Performing a voltage condition judgment; wherein the result of the voltage condition judgment includes a result that the voltage meets the preset condition and a result that the voltage does not meet the preset condition; When the result of the voltage condition judgment is that the voltage does not meet the preset condition result, the voltage-free condition traversal is performed to generate a test case; When the result of the voltage condition judgment is that the voltage meets the preset condition result, a synchronous judgment is performed; wherein the result of the synchronous judgment includes the result that the frequency meets the preset condition result and the result that the frequency does not meet the preset condition result; When the result of the simultaneous judgment is that the frequency meets the preset conditions, the closed loop and closed condition traversal is performed to generate a test case; When the result of the synchronous judgment is that the frequency does not meet the preset condition result, a quasi-synchronous condition traversal is performed to generate a test case.

4. The method for simulating the synchronous function of the substation measurement and control device according to claim 3, characterized in that: The no-voltage condition traversal includes: at least one of the following: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, and no-voltage judgment on at least one side of the system side or the synchronous side; Quasi-synchronous condition traversal, including: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, voltage difference less than voltage difference fixed value judgment, frequency difference less than frequency difference fixed value judgment, frequency change rate difference less than slip fixed value judgment, closing angle less than synchronous closing angle fixed value judgment, and at least one of the following: synchronous condition establishment judgment within the whole group reset time; The closing conditions of the loop are traversed, including: analog quantity quality judgment, system side voltage transformer PT disconnection logic judgment, voltage difference is less than the voltage difference set value judgment, frequency difference is less than the frequency difference set value judgment, frequency change rate difference is less than the slip set value judgment, and angle difference is less than the angle set value judgment. At least one of them.

5. The method for simulating the synchronous function of the substation measurement and control device according to claim 4, characterized in that: After the quasi-contemporaneous condition traversal, the method further includes: Based on the logic judgment time, the whole set of reset parameters and the closing angle parameters, the whole set of reset parameters and / or the closing angle parameters are adjusted.

6. The method for simulating the synchronous function of the substation measurement and control device according to claim 5, characterized in that: The adjusting of the whole set of reset parameters based on the logic judgment time, the whole set of reset parameters, and the closing angle parameters includes: If the whole set of reset parameters is less than the preset reset value, and the logic judgment time is greater than or equal to the whole set of reset parameters, then increase the whole set of reset parameters; If the entire set of reset parameters is greater than or equal to the preset reset value, and the logic judgment time is greater than or equal to the preset reset value, the closing angle parameter is increased.

7. A synchronous function simulation test device for a substation measurement and control device, characterized in that: include: Standard client module, used to obtain AC sampling information and synchronous configuration parameters; A synchronous simulation logic module is used to perform simulation logic traversal based on the AC sampling information and the synchronous configuration parameters; wherein the simulation logic traversal includes a no-pressure condition traversal, a quasi-synchronous condition traversal, and a closed-loop condition traversal; The test report generation module is used to perform simulation testing based on the test case and generate simulation test results.

8. The synchronous function simulation test device of the substation measurement and control device according to claim 7, characterized in that: The device also includes: a configuration file reading and writing module, a database server link module and a simulation client module; The configuration file reading and writing module is used to store or call the AC sampling information, the synchronous parameter information, the test case and the simulation test result; The database server link module is used to call the application database interface through the configuration file reading and writing module to implement storage and reading operations on the data in the application database; The simulation client module is used to display the simulation test process and simulation test results.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 6 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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