Relay protection test method and device based on multi-source data, equipment and medium

Abstract

The invention relates to a relay protection test method and device based on multi-source data, equipment and a medium. The method comprises the following steps: acquiring a relay protection test analog signal; inputting the relay protection test analog signal into the power grid relay protection topological structure model to generate a relay protection test response signal; generating an operation stability score of each relay protection node in the power grid relay protection topological structure model based on a relay protection test response signal corresponding to the normal state test analog signal and a relay protection test response signal corresponding to the environment disturbance test analog signal; generating an abnormal response score of each relay protection node according to a relay protection test response signal corresponding to the fault state test analog signal; and generating a relay protection test comprehensive score in combination with the operation stability score and the abnormal response score. By adopting the method, complex working conditions of the smart grid can be comprehensively simulated, the performance of the relay protection system is quantitatively evaluated, and the relay protection test efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of relay protection testing, and in particular to a relay protection testing method, device, equipment and medium based on multi-source data. Background Art

[0002] With the development of smart grid technology, relay protection systems must cope with multi-state coupling scenarios. Traditional relay protection testing techniques are characterized by isolated scenarios, simulating only single faults or steady-state conditions without considering the superposition of multiple signals. This makes it impossible to replicate the dynamic characteristics of actual power grids, and lacks quantitative analysis of steady-state stability, cascade coordination performance, and environmental robustness, making it difficult to support system optimization.

[0003] Traditionally, relay protection testing has typically relied on a single analog signal injection method. By injecting a specific voltage or current signal into the protection device, basic performance indicators such as the device's operating time and sensitivity are measured. However, this traditional method suffers from a single testing scenario, making it difficult to comprehensively evaluate the performance of the protection device. Furthermore, traditional analog signals typically contain only a single power frequency fundamental wave, making it difficult to reflect the dynamic changes in actual power system operation, resulting in discrepancies between test results and actual operating conditions. Summary of the Invention

[0004] Based on this, it is necessary to provide a multi-source data-driven, full-scene coverage, and multi-dimensionally quantified relay protection testing method, device, equipment, and medium based on multi-source data to address the above technical problems.

[0005] In a first aspect, the present application provides a relay protection testing method based on multi-source data, comprising:

[0006] Acquire relay protection test simulation signals, where the relay protection test simulation signals include normal state test simulation signals, fault state test simulation signals, and environmental disturbance test simulation signals;

[0007] Inputting the relay protection test simulation signal into the power grid relay protection topology model to generate a relay protection test response signal;

[0008] Generate an operation stability score of each relay protection node in the power grid relay protection topology model based on the relay protection test response signal corresponding to the normal state test simulation signal and the relay protection test response signal corresponding to the environmental disturbance test simulation signal;

[0009] Generate an abnormal response score for each relay protection node according to the relay protection test response signal corresponding to the fault state test simulation signal;

[0010] The operation stability score and abnormal response score are combined to generate a comprehensive score for the relay protection test.

[0011] In one embodiment, the relay protection testing method based on multi-source data further includes:

[0012] Obtaining a relay protection execution response parameter of each relay protection node, where the relay protection execution response parameter is used to characterize the time required for the relay protection actuator to execute the relay protection operation;

[0013] Obtaining a relay protection control model for each relay protection node, where the relay protection control model is used to characterize the control logic of the relay protection control mechanism corresponding to the relay protection actuator and the time required to generate a relay protection operation control instruction for controlling the relay protection actuator;

[0014] A power grid relay protection topology model is constructed based on relay protection execution response parameters and relay protection control response parameters.

[0015] In one embodiment, the relay protection control model includes real-time access to the relay protection control model and the digital twin relay protection control model to obtain the relay protection control model of each relay protection node, including:

[0016] Acquire test authority information, and identify the real-time access relay protection control model in each relay protection node based on the test authority information, where the real-time access relay protection control model is used to represent the relay protection control model with real-time access authority corresponding to the test authority information;

[0017] The relay protection control model other than the real-time access relay protection control model is used as a physical twin relay protection control model, and model parameters of the physical twin relay protection control model are obtained;

[0018] Based on the model parameters of the physical twin relay protection control model, the digital twin relay protection control model corresponding to each physical twin relay protection control model is constructed.

[0019] In one embodiment, inputting a relay protection test simulation signal into a power grid relay protection topology model to generate a relay protection test response signal includes:

[0020] Inputting the relay protection test simulation signal into the power grid relay protection topology model to generate the relay protection control model input signal of each relay protection control model;

[0021] Based on the input signal of the relay protection control model and in combination with each relay protection control model, generating the relay protection actuator execution control instruction of each relay protection control model and the generation timing information of the relay protection actuator execution control instruction;

[0022] The relay protection actuator is controlled based on the execution control instruction of the relay protection actuator, and the relay protection test response signal is generated in combination with the power grid relay protection topology model.

[0023] In one embodiment, obtaining a relay protection test simulation signal includes:

[0024] Obtain historical power grid operation data, and use pattern recognition algorithms to identify historical normal operation data, historical fault operation data, and historical environmental disturbance data from the historical power grid operation data;

[0025] Preprocessing the historical normal operation data of the power grid, the historical fault operation data of the power grid and the historical environment data of the power grid to generate a normal operation standard data set of the power grid, a fault operation standard data set of the power grid and a disturbance standard data set of the power grid environment;

[0026] Obtain the preset relay protection test target scenario, combine the power grid normal operation standard data set, power grid fault operation standard data set and power grid environmental disturbance standard data set, and generate normal state test simulation signals, fault state test simulation signals and environmental disturbance test simulation signals.

[0027] In one embodiment, the historical normal operation data of the power grid, the historical fault operation data of the power grid, and the historical environment data of the power grid are preprocessed to generate a normal operation standard data set of the power grid, a fault operation standard data set of the power grid, and a disturbance standard data set of the power grid environment, including:

[0028] Performing time stamp alignment on the historical normal operation data, historical fault operation data and historical environment data of the power grid to generate the historical normal operation time-frequency correction data, historical fault operation time-frequency correction data and historical environment time-frequency correction data of the power grid;

[0029] A data format standardization algorithm is used to convert the format of the power grid's historical normal operation time-frequency correction data, the power grid's historical fault operation time-frequency correction data, and the power grid's historical environmental time-frequency correction data to generate the power grid's historical normal operation standard data, the power grid's historical fault operation standard data, and the power grid's historical environmental standard data.

[0030] Combined with the generative adversarial model, the data of the historical normal operation standard data of the power grid is reduced, and the data of the historical fault operation standard data of the power grid and the historical environmental standard data of the power grid are amplified to construct the normal operation standard data set of the power grid, the fault operation standard data set of the power grid and the environmental disturbance standard data set of the power grid.

[0031] In one embodiment, the relay protection test response signal includes a voltage response signal, a current response signal, a frequency response signal, and a protection cascade signal. The expressions for the operation stability score and the abnormal response score are:

[0032]

[0033] Where S S A is the running stability score. norm For the normal state test, the accuracy recognition rate of the simulated signal is A env The correct recognition rate of the simulated signal for the environmental disturbance test, R env is the environmental disturbance recovery rate, S v 、S i and S f They are voltage stability score, current stability score and frequency stability score, and are the voltage operation stability scoring weight, current operation stability scoring weight and frequency operation stability scoring weight, N NE is the total number of normal state test simulation signals and environmental disturbance test simulation signals, The number of protection cascades to enable runs with a stable penalty exponential coefficient, is the cascade protection jump-level activation parameter of the jth normal state test simulation signal or environmental disturbance test simulation signal, Max[·,·] is the maximum value function, The cascade protection over-level enabling parameter of the χth relay protection test simulation signal, C χ The actual number of cascade protection activations for the xth relay protection test simulation signal, The preset standard cascade protection activation number of the χth relay protection test simulation signal, S E Score the abnormal response, A exc The accuracy of the recognition rate of the simulated signal for abnormal state testing, R exc is the abnormal state recovery rate, and are the voltage anomaly response scoring weight, current anomaly response scoring weight and frequency anomaly response scoring weight, respectively, N E The total number of simulation signals for abnormal state testing, To enable the protection cascade number abnormal response penalty exponential coefficient, Test the cascade protection jump-level enabling parameters of the simulation signal for the kth abnormal state. To enable protection cascade number abnormal response reward exponential coefficient, Cascade protection degradation enabling parameters of the simulated signal for the kth abnormal state test, Cascade protection jump-level enabling parameter of the simulation signal for the kth abnormal state test, C k The actual number of cascade protection activations of the simulated signal for the kth abnormal state test.

[0034] In a second aspect, the present application further provides a relay protection test device based on multi-source data, comprising:

[0035] A test simulation signal acquisition module is used to obtain relay protection test simulation signals, which include normal state test simulation signals, fault state test simulation signals and environmental disturbance test simulation signals;

[0036] A test response signal acquisition module is used to input the relay protection test simulation signal into the power grid relay protection topology model to generate a relay protection test response signal;

[0037] An operation stability score generation module is used to generate an operation stability score of each relay protection node in the power grid relay protection topology model based on the relay protection test response signal corresponding to the normal state test simulation signal and the relay protection test response signal corresponding to the environmental disturbance test simulation signal;

[0038] An abnormal response score generating module is used to generate an abnormal response score of each relay protection node according to the relay protection test response signal corresponding to the fault state test simulation signal;

[0039] The test comprehensive score generation module is used to generate a comprehensive score for the relay protection test by combining the operation stability score and the abnormal response score.

[0040] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of any method of the first aspect of the present application are implemented.

[0041] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any method of the first aspect of the present application.

[0042] The above-mentioned relay protection test methods, devices, equipment and media based on multi-source data can fully reproduce the real working conditions of the power grid in multiple scenarios such as steady-state operation, sudden faults and external interference by obtaining test simulation signals including normal state, fault state and environmental disturbance, combined with the power grid relay protection topology model, thereby solving the problem of insufficient protection performance verification due to the single scenario in traditional testing, and ensuring the reliability and stability of the relay protection system in complex actual environments; by combining the operation stability score and the abnormal response score to generate a comprehensive relay protection test score, a systematic evaluation system covering multiple aspects of performance can be formed, so that the weak links of the relay protection device under different working conditions can be accurately located, providing a scientific basis for the setting adjustment, hardware upgrade and system-level coordination and optimization of the relay protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. 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.

[0044] Figure 1 A flowchart of a relay protection testing method based on multi-source data provided in one embodiment of the present application;

[0045] Figure 2 A flowchart of another relay protection testing method based on multi-source data provided by one embodiment of the present application;

[0046] Figure 3 A schematic diagram of a flow chart for obtaining a relay protection control model provided in one embodiment of the present application;

[0047] Figure 4 A schematic structural diagram of a relay protection test device based on multi-source data provided in one embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0049] In one embodiment, Figure 1 As shown, a relay protection test method based on multi-source data is provided. This embodiment uses the method applied to a test terminal as an example for illustration. It is understandable that the method can also be applied to a server, or to a system including a test terminal and a server, and implemented through the interaction between the test terminal and the server. In this embodiment, the method includes the following steps:

[0050] Step S101: Acquire a relay protection test simulation signal.

[0051] Specifically, the test terminal may obtain the relay protection test simulation signal from a preset database.

[0052] Optionally, the relay protection test simulation signal may include, but is not limited to, a normal state test simulation signal, a fault state test simulation signal, and an environmental disturbance test simulation signal.

[0053] Step S102: inputting a relay protection test simulation signal into a power grid relay protection topology model to generate a relay protection test response signal.

[0054] Specifically, the test terminal may input the relay protection test simulation signal obtained from the database into the power grid relay protection topology model to generate a relay protection test response signal.

[0055] Step S103 : generating an operation stability score of each relay protection node in the power grid relay protection topology model based on the relay protection test response signal corresponding to the normal state test simulation signal and the relay protection test response signal corresponding to the environmental disturbance test simulation signal.

[0056] Schematically, the test terminal can obtain the recovery speed of environmental disturbance, the correct recognition rate of environmental disturbance test simulation signal, the correct recognition rate of normal state test simulation signal, the cascade number of relay protection operations generated based on normal state test simulation signal or environmental disturbance test simulation signal, and the degree of grid fluctuation generated based on normal state test simulation signal or environmental disturbance test simulation signal through the relay protection test response signal corresponding to the normal state test simulation signal and the relay protection test response signal corresponding to the environmental disturbance test simulation signal, to obtain the operation stability score of each relay protection node in the power grid relay protection topology model.

[0057] Step S104: generating an abnormal response score of each relay protection node according to the relay protection test response signal corresponding to the fault state test simulation signal.

[0058] Schematically, the test terminal can obtain the recovery speed of abnormal disturbance, the correct recognition rate of normal state test simulation signal, the cascade number of relay protection operations generated based on abnormal state test simulation signal, and the degree of grid fluctuation generated based on abnormal state test simulation signal through the relay protection test response signal corresponding to the abnormal state test simulation signal, and obtain the abnormal response score of each relay protection node in the power grid relay protection topology model.

[0059] Step S105 : generating a comprehensive score of the relay protection test by combining the operation stability score and the abnormal response score.

[0060] In the above-mentioned relay protection test method based on multi-source data, through multi-source data fusion technology, various simulation signals such as normal state, fault state and environmental disturbance can be combined and used, so as to more comprehensively simulate various complex working conditions of actual power grid operation, and provide a more comprehensive and accurate test basis for the performance evaluation of the relay protection system, thereby ensuring the reliability and stability of the relay protection system under various actual operating conditions.

[0061] Furthermore, in the above-mentioned relay protection test method based on multi-source data, by generating an operation stability score and an abnormal response score, and then combining the operation stability score and the abnormal response score to generate a comprehensive relay protection test score, the relay protection performance evaluation can be made more intuitive and clear, which is convenient for quickly finding the weak links in the system and performing targeted optimization to improve the comprehensive performance of the relay protection system; through the quantitative evaluation of the operation stability and abnormal response capability of the relay protection device through various scores, a clear direction can be provided for the optimization and adjustment of the relay protection system, thereby ensuring the response performance of the relay protection system and better ensuring the reliability and stability of the power grid.

[0062] In an optional embodiment of the present application, please refer to Figure 2 , the relay protection test method based on multi-source data also includes:

[0063] Step S201: Acquire the relay protection execution response parameters of each relay protection node.

[0064] Illustratively, the relay protection execution response parameter can be used to characterize the time required for the relay protection actuator to execute the relay protection operation.

[0065] Step S202, obtain the relay protection control model of each relay protection node.

[0066] Illustratively, the relay protection control model can be used to characterize the control logic of the relay protection control mechanism corresponding to the relay protection actuator and the time required to generate the relay protection operation control instruction for controlling the relay protection actuator.

[0067] Step S203: constructing a power grid relay protection topology model based on the relay protection execution response parameters and the relay protection control response parameters.

[0068] In the above-mentioned relay protection testing method based on multi-source data, by obtaining the relay protection control model, we can have an in-depth understanding of the control logic of the relay protection control mechanism and the time required to generate control instructions; by constructing a power grid relay protection topology model based on the relay protection execution response parameters and the control model, the model can more realistically reflect the operating status and performance characteristics of the relay protection system in the actual power grid, providing a more accurate simulation and prediction basis for relay protection performance evaluation, fault analysis and system upgrades, which can help to discover potential problems in advance and formulate effective solutions, thereby improving the overall effectiveness and maintenance efficiency of the relay protection system.

[0069] In an optional embodiment of the present application, the relay protection control model includes a real-time access relay protection control model and a digital twin relay protection control model, such as Figure 3 As shown, the relay protection control model of each relay protection node is obtained, including:

[0070] Step S301: Acquire test authority information, and identify the real-time access relay protection control model in each relay protection node based on the test authority information.

[0071] Illustratively, the real-time access relay protection control model is used to represent the relay protection control model with real-time access rights corresponding to the test authority information.

[0072] Step S302: taking the relay protection control model other than the real-time access relay protection control model as the physical twin relay protection control model, and obtaining the model parameters of the physical twin relay protection control model.

[0073] Step S303: constructing a digital twin relay protection control model corresponding to each physical twin relay protection control model based on the model parameters of the physical twin relay protection control model.

[0074] Optionally, at this time, step S102, inputting the relay protection test simulation signal into the power grid relay protection topology model to generate a relay protection test response signal, may include: inputting the relay protection test simulation signal into the power grid relay protection topology model to generate a real-time access relay protection control model input signal of each real-time access relay protection control model and a digital twin relay protection control model input signal of each digital twin relay protection control model; inputting the real-time access relay protection control model input signal into each real-time access relay protection control model to obtain a real-time access relay protection control model output signal of each real-time access relay protection control model; inputting the digital twin relay protection control model input signal into each digital twin relay protection control model to obtain a digital twin relay protection control model output signal of each digital twin relay protection control model; generating a relay protection test response signal based on the real-time access relay protection control model output signal and the digital twin relay protection control model output signal, combined with the relay protection execution response parameters.

[0075] In the above-mentioned relay protection test method based on multi-source data, by obtaining test authority information and identifying real-time access to relay protection control models, it is possible to achieve classified management and accurate identification of relay protection control models, thereby improving the targetedness of tests and the standardization of authority management; by constructing a corresponding digital twin relay protection control model based on the parameters of the physical twin relay protection control model, it is possible to achieve dynamic simulation of the relay protection control process with the help of digital twin technology; by distinguishing between real-time access models and physical twin models that lack real-time access conditions, it is possible to reduce the interference of relay protection tests on the actual power grid system, achieve risk-free testing and optimization of the relay protection system, and improve the testing convenience of the relay protection system.

[0076] In an optional embodiment of the present application, please refer to Figure 2 , inputting the relay protection test simulation signal into the power grid relay protection topology model to generate the relay protection test response signal, which may include:

[0077] Step S207: inputting the relay protection test simulation signal into the power grid relay protection topology model to generate relay protection control model input signals of each relay protection control model.

[0078] Step S208 : Based on the relay protection control model input signal and in combination with each relay protection control model, generate the relay protection actuator execution control instruction and the generation timing information of the relay protection actuator execution control instruction of each relay protection control model.

[0079] Step S209 : controlling the relay protection actuator based on the relay protection actuator execution control instruction and generating a relay protection test response signal in combination with the power grid relay protection topology model.

[0080] In an optional embodiment of the present application, please refer to Figure 2 , obtain relay protection test simulation signals, which may include:

[0081] Step S204 , acquiring historical grid operation data, and identifying historical grid normal operation data, historical grid fault operation data, and historical grid environmental disturbance data from the historical grid operation data using a pattern recognition algorithm.

[0082] Step S205 , pre-processing the historical normal operation data of the power grid, the historical fault operation data of the power grid and the historical environment data of the power grid to generate a normal operation standard data set of the power grid, a fault operation standard data set of the power grid and a disturbance standard data set of the power grid environment.

[0083] Step S206, obtain a preset relay protection test target scenario, combine the grid normal operation standard data set, the grid fault operation standard data set and the grid environmental disturbance standard data set, and generate a normal state test simulation signal, a fault state test simulation signal and an environmental disturbance test simulation signal.

[0084] In an optional embodiment of the present application, preprocessing the historical normal operation data of the power grid, the historical fault operation data of the power grid, and the historical environment data of the power grid to generate the normal operation standard data set of the power grid, the fault operation standard data set of the power grid, and the disturbance standard data set of the power grid environment may include:

[0085] The timestamps of the historical normal operation data of the power grid, the historical fault operation data of the power grid and the historical environmental data of the power grid are aligned to generate the historical normal operation time-frequency correction data of the power grid, the historical fault operation time-frequency correction data of the power grid and the historical environmental time-frequency correction data of the power grid.

[0086] A data format standardization algorithm is used to convert the format of the power grid's historical normal operation time-frequency correction data, the power grid's historical fault operation time-frequency correction data, and the power grid's historical environmental time-frequency correction data to generate the power grid's historical normal operation standard data, the power grid's historical fault operation standard data, and the power grid's historical environmental standard data.

[0087] Combined with the generative adversarial model, the data of the historical normal operation standard data of the power grid is reduced, and the data of the historical fault operation standard data of the power grid and the historical environmental standard data of the power grid are amplified to construct the normal operation standard data set of the power grid, the fault operation standard data set of the power grid and the environmental disturbance standard data set of the power grid.

[0088] In an optional embodiment of the present application, the relay protection test response signal includes a voltage response signal, a current response signal, a frequency response signal, and a protection cascade signal. The expressions for the operation stability score and the abnormal response score can be:

[0089]

[0090] Where S S A is the running stability score. norm For the normal state test, the accuracy recognition rate of the simulated signal is A env The correct recognition rate of the simulated signal for the environmental disturbance test, R env is the environmental disturbance recovery rate, S v 、S i and S f They are voltage stability score, current stability score and frequency stability score, and are the voltage operation stability scoring weight, current operation stability scoring weight and frequency operation stability scoring weight, N NE is the total number of normal state test simulation signals and environmental disturbance test simulation signals, The number of protection cascades to enable runs with a stable penalty exponential coefficient, is the cascade protection jump-level activation parameter of the jth normal state test simulation signal or environmental disturbance test simulation signal, Max[·,·] is the maximum value function, The cascade protection over-level enabling parameter of the χth relay protection test simulation signal, C χ The actual number of cascade protection activations for the xth relay protection test simulation signal, The preset standard cascade protection activation number of the χth relay protection test simulation signal, S E Score the abnormal response, A exc The accuracy of the recognition rate of the simulated signal for abnormal state testing, R exc is the abnormal state recovery rate, and are the voltage anomaly response scoring weight, current anomaly response scoring weight and frequency anomaly response scoring weight, respectively, N E The total number of simulation signals for abnormal state testing, To enable the protection cascade number abnormal response penalty exponential coefficient, Test the cascade protection jump-level enabling parameters of the simulation signal for the kth abnormal state. To enable protection cascade number abnormal response reward exponential coefficient, Cascade protection degradation enabling parameters of the simulated signal for the kth abnormal state test, Cascade protection jump-level enabling parameters of the simulation signal for the kth abnormal state test, C k The actual number of cascade protection activations of the simulated signal for the kth abnormal state test.

[0091] Optionally, enable protection cascade number to run stable penalty exponent coefficient Enable protection cascade number abnormal response penalty index coefficient and the number of enabled protection cascades and the abnormal response reward index coefficient Can be a positive number.

[0092] For example, under normal conditions, the preset standard cascade protection activation number Can be zero; under environmental interference, the preset standard cascade protection activation number Can be one; in abnormal state, the preset standard cascade protection activation number It can be two or three.

[0093] Indicatively, in the prior art, the power grid is usually regulated by adjusting the frequency parameters, and the frequency operation stability score weight is Can be greater than the voltage operation stability score weight and current operation stability score weight Frequency anomaly response scoring weight Can be greater than the voltage anomaly response score weight and current anomaly response scoring weights

[0094] In principle, the voltage stability score, current stability score, and frequency stability score when dealing with abnormal conditions are usually lower than those when dealing with normal conditions or environmental disturbances. Moreover, the voltage stability score, current stability score, and frequency stability score are more important when dealing with abnormal conditions than when dealing with normal conditions or environmental disturbances. Therefore, the voltage abnormality response score weight is Current anomaly response scoring weight and frequency anomaly response score weights Can be greater than the voltage operation stability score weight respectively Current operation stability score Weight and frequency run stable scoring weight

[0095] In an exemplary embodiment of the present application, Figure 2 As shown, a relay protection testing method based on multi-source data is provided, including:

[0096] Step S201: Acquire the relay protection execution response parameters of each relay protection node.

[0097] Step S202: Acquire the relay protection control model of each relay protection node.

[0098] Step S203: constructing a power grid relay protection topology model based on the relay protection execution response parameters and the relay protection control response parameters.

[0099] Step S204 , acquiring historical grid operation data, and identifying historical grid normal operation data, historical grid fault operation data, and historical grid environmental disturbance data from the historical grid operation data using a pattern recognition algorithm.

[0100] Step S205 , pre-processing the historical normal operation data of the power grid, the historical fault operation data of the power grid and the historical environment data of the power grid to generate a normal operation standard data set of the power grid, a fault operation standard data set of the power grid and a disturbance standard data set of the power grid environment.

[0101] Step S206, obtain a preset relay protection test target scenario, combine the grid normal operation standard data set, the grid fault operation standard data set and the grid environmental disturbance standard data set, and generate a normal state test simulation signal, a fault state test simulation signal and an environmental disturbance test simulation signal.

[0102] Step S207: inputting the relay protection test simulation signal into the power grid relay protection topology model to generate relay protection control model input signals of each relay protection control model.

[0103] Step S208 : Based on the relay protection control model input signal and in combination with each relay protection control model, generate the relay protection actuator execution control instruction and the generation timing information of the relay protection actuator execution control instruction of each relay protection control model.

[0104] Step S209: controlling the relay protection actuator based on the relay protection actuator execution control instruction.

[0105] Combined with the power grid relay protection topology model, a relay protection test response signal is generated.

[0106] Step S210 : generating an operation stability score of each relay protection node in the power grid relay protection topology model based on the relay protection test response signal corresponding to the normal state test simulation signal and the relay protection test response signal corresponding to the environmental disturbance test simulation signal.

[0107] Step S211 : generating an abnormal response score of each relay protection node according to the relay protection test response signal corresponding to the fault state test simulation signal.

[0108] Step S212: Generate a comprehensive score for the relay protection test by combining the operation stability score and the abnormal response score.

[0109] In the above-mentioned relay protection testing method based on multi-source data, an accurate power grid relay protection topology model is constructed by obtaining the execution response parameters and control models of the relay protection nodes. This can quantitatively evaluate the operating stability and abnormal response capability of each node, and ultimately generate a comprehensive score, thereby comprehensively improving the authenticity, accuracy and reliability of the relay protection test, and providing strong support for the performance evaluation, fault diagnosis, optimization adjustment and stable operation of the power grid relay protection system, thereby effectively ensuring the safety and reliability of the power grid.

[0110] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0111] Based on the same inventive concept, an embodiment of the present application further provides a multi-source data-based relay protection test device for implementing the multi-source data-based relay protection test method mentioned above. The implementation solution provided by this device is similar to the implementation solution described in the above method. Therefore, the specific limitations of one or more embodiments of the multi-source data-based relay protection test device provided below can be found in the above-mentioned limitations of the multi-source data-based relay protection test method, and will not be repeated here.

[0112] In an exemplary embodiment, Figure 4 As shown, a relay protection test device 400 based on multi-source data is provided, comprising:

[0113] The test simulation signal acquisition module 401 can be used to acquire relay protection test simulation signals. The relay protection test simulation signals include normal state test simulation signals, fault state test simulation signals and environmental disturbance test simulation signals.

[0114] The test response signal acquisition module 402 may be used to input the relay protection test simulation signal into the power grid relay protection topology model to generate a relay protection test response signal.

[0115] The operation stability score generation module 403 can be used to generate the operation stability score of each relay protection node in the power grid relay protection topology model based on the relay protection test response signal corresponding to the normal state test simulation signal and the relay protection test response signal corresponding to the environmental disturbance test simulation signal.

[0116] The abnormal response score generating module 404 may be configured to generate an abnormal response score for each relay protection node according to the relay protection test response signal corresponding to the fault state test simulation signal.

[0117] The test comprehensive score generating module 405 may be used to generate a comprehensive score for the relay protection test by combining the operation stability score and the abnormal response score.

[0118] In an optional embodiment of the present application, the relay protection test device 400 based on multi-source data can also be used for:

[0119] The relay protection execution response parameters of each relay protection node are obtained. The relay protection execution response parameters are used to characterize the time required for the relay protection actuator to execute the relay protection operation.

[0120] The relay protection control model of each relay protection node is obtained. The relay protection control model is used to characterize the control logic of the relay protection control mechanism corresponding to the relay protection actuator and the time required to generate the relay protection operation control instruction for controlling the relay protection actuator.

[0121] A power grid relay protection topology model is constructed based on relay protection execution response parameters and relay protection control response parameters.

[0122] In an optional embodiment of the present application, the relay protection test device 400 based on multi-source data can also be used for:

[0123] Acquire test authority information, and identify the real-time access relay protection control model in each relay protection node based on the test authority information. The real-time access relay protection control model is used to characterize the relay protection control model with real-time access authority corresponding to the test authority information.

[0124] The relay protection control models other than the real-time access relay protection control model are used as physical twin relay protection control models, and model parameters of the physical twin relay protection control models are obtained.

[0125] Based on the model parameters of the physical twin relay protection control model, the digital twin relay protection control model corresponding to each physical twin relay protection control model is constructed.

[0126] In an optional embodiment of the present application, the test response signal acquisition module 402 may also be used to:

[0127] The relay protection test simulation signal is input into the power grid relay protection topology model to generate the relay protection control model input signal of each relay protection control model.

[0128] Based on the input signal of the relay protection control model and in combination with each relay protection control model, the relay protection actuator execution control instruction of each relay protection control model and the generation timing information of the relay protection actuator execution control instruction are generated.

[0129] The relay protection actuator is controlled based on the execution control instruction of the relay protection actuator, and the relay protection test response signal is generated in combination with the power grid relay protection topology model.

[0130] In an optional embodiment of the present application, the test simulation signal acquisition module 401 may also be used to:

[0131] Obtain historical power grid operation data, and use pattern recognition algorithms to identify historical power grid normal operation data, historical power grid fault operation data, and historical power grid environmental disturbance data from the historical power grid operation data.

[0132] After preprocessing the historical normal operation data of the power grid, the historical fault operation data of the power grid and the historical environment data of the power grid, a normal operation standard data set of the power grid, a fault operation standard data set of the power grid and a disturbance standard data set of the power grid are generated.

[0133] Obtain the preset relay protection test target scenario, combine the power grid normal operation standard data set, power grid fault operation standard data set and power grid environmental disturbance standard data set, and generate normal state test simulation signals, fault state test simulation signals and environmental disturbance test simulation signals.

[0134] In an optional embodiment of the present application, the test simulation signal acquisition module 401 may also be used to:

[0135] The timestamps of the historical normal operation data of the power grid, the historical fault operation data of the power grid and the historical environmental data of the power grid are aligned to generate the historical normal operation time-frequency correction data of the power grid, the historical fault operation time-frequency correction data of the power grid and the historical environmental time-frequency correction data of the power grid.

[0136] A data format standardization algorithm is used to convert the format of the power grid's historical normal operation time-frequency correction data, the power grid's historical fault operation time-frequency correction data, and the power grid's historical environmental time-frequency correction data to generate the power grid's historical normal operation standard data, the power grid's historical fault operation standard data, and the power grid's historical environmental standard data.

[0137] Combined with the generative adversarial model, the data of the historical normal operation standard data of the power grid is reduced, and the data of the historical fault operation standard data of the power grid and the historical environmental standard data of the power grid are amplified to construct the normal operation standard data set of the power grid, the fault operation standard data set of the power grid and the environmental disturbance standard data set of the power grid.

[0138] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the relay protection testing method based on multi-source data as described above are implemented.

[0139] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0140] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to the partial description of the method embodiments. The device embodiments described above are merely illustrative, wherein the components described as separate parts may or may not be physically separated, and the parts displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. A person of ordinary skill in the art can understand and implement it without expending creative work.

[0141] The above-described embodiments merely represent several implementation methods of the embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the concept of the embodiments of the present application, and these modifications and improvements fall within the scope of protection of the embodiments of the present application.

Claims

1. A relay protection testing method based on multi-source data, characterized in that: The method comprises: Acquire a relay protection test simulation signal, wherein the relay protection test simulation signal includes a normal state test simulation signal, a fault state test simulation signal, and an environmental disturbance test simulation signal; Inputting the relay protection test simulation signal into the power grid relay protection topology model to generate a relay protection test response signal; generating an operation stability score of each relay protection node in the power grid relay protection topology model based on the relay protection test response signal corresponding to the normal state test simulation signal and the relay protection test response signal corresponding to the environmental disturbance test simulation signal; generating an abnormal response score for each of the relay protection nodes according to the relay protection test response signal corresponding to the fault state test simulation signal; The operation stability score and the abnormal response score are combined to generate a comprehensive score of the relay protection test.

2. The method according to claim 1, characterized in that The method further comprises: Acquiring a relay protection execution response parameter of each of the relay protection nodes, wherein the relay protection execution response parameter is used to characterize the time required for the relay protection actuator to execute the relay protection operation; Acquire a relay protection control model of each relay protection node, wherein the relay protection control model is used to characterize the control logic of the relay protection control mechanism corresponding to the relay protection actuator and the time required to generate a relay protection operation control instruction for controlling the relay protection actuator; The power grid relay protection topology model is constructed based on the relay protection execution response parameters and the relay protection control response parameters.

3. The method according to claim 2, characterized in that The relay protection control model includes a real-time access relay protection control model and a digital twin relay protection control model. The obtaining of the relay protection control model of each relay protection node includes: Acquire test authority information, and identify the real-time access relay protection control model in each relay protection node based on the test authority information, wherein the real-time access relay protection control model is used to characterize the relay protection control model with real-time access authority corresponding to the test authority information; Taking the relay protection control model other than the real-time access relay protection control model as a physical twin relay protection control model, and obtaining model parameters of the physical twin relay protection control model; The digital twin relay protection control model corresponding to each physical twin relay protection control model is constructed based on the model parameters of the physical twin relay protection control model.

4. The method according to claim 2, characterized in that Inputting the relay protection test simulation signal into the power grid relay protection topology model to generate a relay protection test response signal includes: Inputting the relay protection test simulation signal into the power grid relay protection topology structure model to generate relay protection control model input signals for each relay protection control model; Based on the relay protection control model input signal, in combination with each of the relay protection control models, generating a relay protection actuator execution control instruction of each of the relay protection control models and generation timing information of the relay protection actuator execution control instruction; The relay protection actuator is controlled based on the execution control instruction of the relay protection actuator, and the relay protection test response signal is generated in combination with the power grid relay protection topology model.

5. The method according to claim 1, wherein The step of obtaining a relay protection test simulation signal includes: Acquire historical power grid operation data, and identify historical power grid normal operation data, historical power grid fault operation data, and historical power grid environmental disturbance data from the historical power grid operation data using a pattern recognition algorithm; Preprocessing the historical normal operation data of the power grid, the historical fault operation data of the power grid and the historical environment data of the power grid to generate a normal operation standard data set of the power grid, a fault operation standard data set of the power grid and a disturbance standard data set of the power grid environment; Obtain a preset relay protection test target scenario, and combine the normal operation standard data set of the power grid, the fault operation standard data set of the power grid and the environmental disturbance standard data set of the power grid to generate the normal state test simulation signal, the fault state test simulation signal and the environmental disturbance test simulation signal.

6. The method according to claim 5, characterized in that The preprocessing of the historical normal operation data of the power grid, the historical fault operation data of the power grid and the historical environment data of the power grid to generate a normal operation standard data set of the power grid, a fault operation standard data set of the power grid and a disturbance standard data set of the power grid includes: Performing time stamp alignment on the historical normal operation data of the power grid, the historical fault operation data of the power grid, and the historical environment data of the power grid to generate historical normal operation time-frequency correction data of the power grid, historical fault operation frequency correction data of the power grid, and historical environment time-frequency correction data of the power grid; Using a data format standardization algorithm to perform format conversion processing on the historical normal operation time-frequency correction data of the power grid, the historical fault operation frequency correction data of the power grid, and the historical environment time-frequency correction data of the power grid, to generate historical normal operation standard data of the power grid, historical fault operation standard data of the power grid, and historical environment standard data of the power grid; Combined with the generative adversarial model, data reduction is performed on the historical normal operation standard data of the power grid, and data amplification is performed on the historical fault operation standard data of the power grid and the historical environmental standard data of the power grid to construct the normal operation standard data set of the power grid, the fault operation standard data set of the power grid and the environmental disturbance standard data set of the power grid.

7. The method according to any one of claims 1 to 6, characterized in that The relay protection test response signal includes a voltage response signal, a current response signal, a frequency response signal, and a protection cascade signal. The expressions of the operation stability score and the abnormal response score are: Where S S Score the stability of the operation, A norm For the normal state test, the accuracy recognition rate of the simulated signal is A env The correct recognition rate of the simulated signal for the environmental disturbance test, R env is the environmental disturbance recovery rate, S v 、S i and S f They are voltage stability score, current stability score and frequency stability score, and are the voltage operation stability scoring weight, current operation stability scoring weight and frequency operation stability scoring weight, N NE is the total number of the normal state test simulation signal and the environmental disturbance test simulation signal, The number of protection cascades to enable runs with a stable penalty exponential coefficient, is the cascade protection jump-level activation parameter of the jth normal state test simulation signal or the environmental disturbance test simulation signal, Max[·,·] is the maximum value function, The cascade protection overriding enabling parameter of the xth relay protection test simulation signal, C χ The actual cascade protection activation number of the xth relay protection test simulation signal, is the preset standard cascade protection activation number of the xth relay protection test simulation signal, S E Score the abnormal response, A exc The accuracy of the recognition rate of the simulated signal for abnormal state testing, R exc is the abnormal state recovery rate, and are the voltage anomaly response scoring weight, current anomaly response scoring weight and frequency anomaly response scoring weight, respectively, N E The total number of simulation signals for the abnormal state test, To enable the protection cascade number abnormal response penalty exponential coefficient, The cascade protection jump-level enabling parameter of the kth abnormal state test simulation signal, To enable protection cascade number abnormal response reward exponential coefficient, cascade protection degradation enabling parameter of the simulation signal for the kth abnormal state test, The cascade protection jump-level enabling parameter of the kth abnormal state test simulation signal, C k The actual cascade protection activation number of the simulated signal is tested for the kth abnormal state.

8. A relay protection test device based on multi-source data, characterized in that: The device comprises: A test simulation signal acquisition module is used to obtain a relay protection test simulation signal, wherein the relay protection test simulation signal includes a normal state test simulation signal, a fault state test simulation signal and an environmental disturbance test simulation signal; A test response signal acquisition module is used to input the relay protection test simulation signal into the power grid relay protection topology model to generate a relay protection test response signal; An operation stability score generating module, configured to generate an operation stability score of each relay protection node in the power grid relay protection topology model based on the relay protection test response signal corresponding to the normal state test simulation signal and the relay protection test response signal corresponding to the environmental disturbance test simulation signal; an abnormal response score generating module, configured to generate an abnormal response score for each of the relay protection nodes according to the relay protection test response signal corresponding to the fault state test simulation signal; A test comprehensive score generating module is used to generate a comprehensive score for the relay protection test by combining the operation stability score and the abnormal response score.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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