Method and device for testing the excitation system of a phase modifier

Abstract

The application discloses a method and device for testing a phase modifier excitation system. The method comprises the following steps: based on a target scene for testing the phase modifier excitation system, determining an analog power grid model connected to the phase modifier excitation system and target scene disturbance data for disturbing the phase modifier excitation system; determining simulation disturbance data of the analog power grid model and fault disturbance data of a simulated predetermined fault; determining multi-section target disturbance data according to the target scene disturbance data, the simulation disturbance data and the fault disturbance data; and testing the phase modifier excitation system according to the analog power grid model and the multi-section target disturbance data, to obtain a test result of the phase modifier excitation system under the target scene. The application solves the technical problem of incomplete testing caused by the fact that the performance of the phase modifier excitation system can only be tested according to small disturbance data in the related art.

Description

Technical Field

[0001] This invention relates to the field of power safety and protection, and more specifically, to a testing method and apparatus for a synchronous condenser excitation system. Background Technology

[0002] With the rapid development of my country's power industry, the scale of inter-regional power exchange has increased, the capacity of individual generating units has grown, the power receiving ratio of receiving-end systems has increased, and the mutual influence between power sources and the power grid has intensified. As the characteristics of the power grid become increasingly complex, the correlation between power grid security and power source security has increased. To address various types of voltage stability issues in the power grid, my country has constructed a large number of synchronous condenser units in converter stations and new energy power plants. The rationality of the excitation system design and the stability of operation of large synchronous condensers directly affect the transient stability of the power grid. Therefore, there is an urgent need for testing technologies for synchronous condenser excitation systems.

[0003] In related technologies, real-time simulation systems and relay protection testers are limited by hardware storage resources, processor and I / O rate matching, etc., and can only reproduce the waveform data of synchronous phasor measurement devices with short waveform recording time. This makes them inconvenient for medium and long-term test scenarios, which greatly limits the test scenarios of synchronous condenser excitation systems.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a method and apparatus for testing a synchronous condenser excitation system, which at least solves the technical problem in the related art where the performance of a synchronous condenser excitation system can only be tested based on small disturbance data, resulting in incomplete testing.

[0006] According to one aspect of the present invention, a method for testing a synchronous condenser excitation system is provided, comprising: determining a simulated power grid model connected to the synchronous condenser excitation system and target scenario disturbance data of the synchronous condenser excitation system based on a target scenario for testing the synchronous condenser excitation system; determining simulated disturbance data of the simulated power grid model and fault disturbance data simulating a predetermined fault; determining multiple segments of target disturbance data based on the target scenario disturbance data, the simulated disturbance data, and the fault disturbance data; and testing the synchronous condenser excitation system based on the simulated power grid model and the multiple segments of target disturbance data to obtain test results of the synchronous condenser excitation system under the target scenario.

[0007] Optionally, determining multiple segments of target disturbance data based on the target scene disturbance data, the simulated disturbance data, and the fault disturbance data includes: determining multiple sampling rates corresponding to the target scene disturbance data, the simulated disturbance data, and the fault disturbance data; when different sampling rates exist among the multiple sampling rates, performing differential processing on the target scene disturbance data, the simulated disturbance data, and the fault disturbance data to obtain differential disturbance data; and determining the multiple segments of target disturbance data based on the differential disturbance data.

[0008] Optionally, determining multiple segments of target disturbance data based on the difference disturbance data includes: determining the initial storage capacity of the difference disturbance data; and dividing the difference disturbance data into multiple segments of target disturbance data based on the initial storage capacity of the difference disturbance data, wherein the storage capacity of each segment of target disturbance data is less than or equal to a predetermined storage capacity.

[0009] Optionally, the step of testing the synchronous condenser excitation system based on the simulated power grid model and the multi-segment target disturbance data to obtain the test results of the synchronous condenser excitation system under the target scenario includes: testing the synchronous condenser excitation system based on the simulated power grid model and the multi-segment target disturbance data to obtain target waveform data of the synchronous condenser excitation system; and obtaining the test results of the synchronous condenser excitation system under the target scenario based on the target waveform data.

[0010] Optionally, determining the test result of the synchronous condenser excitation system under the target scenario based on the target waveform data includes: determining the number of times fault waveform data appears in the target waveform data and the waveform of the fault waveform data; and obtaining the test result of the synchronous condenser excitation system under the target scenario based on the number of times the fault waveform data appears and the waveform of the fault waveform data.

[0011] Optionally, determining the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data that disturbs the synchronous condenser excitation system based on the target scenario of the test synchronous condenser excitation system includes: acquiring the actual power grid parameters and actual scenario disturbance data under the target scenario; and determining the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data that disturbs the synchronous condenser excitation system based on the actual power grid parameters and the actual scenario disturbance data.

[0012] According to one aspect of the present invention, a testing apparatus for a synchronous condenser excitation system is provided, comprising: a first determining module, configured to determine, based on a target scenario for testing the synchronous condenser excitation system, a simulated power grid model connected to the synchronous condenser excitation system and target scenario disturbance data perturbing the synchronous condenser excitation system; a second determining module, configured to determine, based on the simulated disturbance data of the simulated power grid model and fault disturbance data simulating a predetermined fault; a third determining module, configured to determine, based on the target scenario disturbance data, the simulated disturbance data, and the fault disturbance data, multiple segments of target disturbance data; and a testing module, configured to test the synchronous condenser excitation system based on the simulated power grid model and the multiple segments of target disturbance data, and obtain test results of the synchronous condenser excitation system under the target scenario.

[0013] According to one aspect of the present invention, an electronic device is provided, comprising: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to execute the instructions to implement the synchronous condenser excitation system testing method described in any of the preceding claims.

[0014] According to one aspect of the present invention, a computer-readable storage medium is provided, wherein when the instructions in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device is enabled to perform the synchronous condenser excitation system test method described in any of the preceding claims.

[0015] According to one aspect of the present invention, a computer program product is provided, comprising a computer program that, when executed by a processor, implements the synchronous condenser excitation system testing method described in any of the preceding claims.

[0016] In this embodiment of the invention, based on the target scenario of testing the synchronous condenser excitation system, a simulated power grid model connected to the synchronous condenser excitation system and target scenario disturbance data of the synchronous condenser excitation system are determined. Simulated disturbance data of the simulated power grid model and fault disturbance data simulating a predetermined fault are also determined. Based on the target scenario disturbance data, simulated disturbance data, and fault disturbance data, multiple segments of target disturbance data are determined. Based on the simulated power grid model and the multiple segments of target disturbance data, the synchronous condenser excitation system is tested, and the test results of the synchronous condenser excitation system under the target scenario are obtained. Because multiple segments of target disturbance data are used, not only are different types of disturbance data tested, but also the disturbance data, which occupies a large storage space, is divided into multiple segments of target disturbance data. This solves the technical problem in related technologies where testing the performance of a synchronous condenser excitation system can only be performed based on smaller disturbance data, resulting in incomplete testing. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a flowchart of a test method for a synchronous condenser excitation system according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the method provided by an optional embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the ultra-real-time scene reproduction process of the camera excitation system in the method provided by the optional embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the test process of the synchronous condenser excitation system of the method provided in the optional embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the parallel operation of a multi-real-time scene reproduction process of the synchronous condenser excitation system provided by the optional embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the method for processing perturbation data with multiple sampling rates in an optional embodiment of the invention;

[0024] Figure 7 This is a schematic diagram of the data segmentation principle in the method provided by the optional embodiment of the present invention;

[0025] Figure 8 This is a timing diagram of the test process of the synchronous condenser excitation system of the method provided in the optional embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the automated sequential execution of multiple test processes in the synchronous condenser excitation system according to an optional embodiment of the present invention;

[0027] Figure 10 This is a structural block diagram of a synchronous condenser excitation system testing device according to an embodiment of the present invention. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] First, some nouns or terms that appear in the description of the embodiments of this application shall be interpreted as follows:

[0031] Synchronous condenser: A high-voltage device installed and operating in an actual power grid.

[0032] Synchronous condenser excitation system: During actual operation, the synchronous condenser excitation system controls the synchronous condenser.

[0033] Example 1

[0034] According to an embodiment of the present invention, an embodiment of a test method for a synchronous condenser excitation system is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0035] Figure 1 This is a flowchart of a test method for a synchronous condenser excitation system according to an embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0036] Step S102: Based on the target scenario of the test synchronous condenser excitation system, determine the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data of the disturbance synchronous condenser excitation system.

[0037] Step S104: Determine the simulation disturbance data of the simulated power grid model and the fault disturbance data of the simulated predetermined fault;

[0038] Step S106: Based on the target scenario disturbance data, simulate the disturbance data and fault disturbance data to determine multiple segments of target disturbance data;

[0039] Step S108: Based on the simulated power grid model and multi-segment target disturbance data, test the synchronous condenser excitation system to obtain the test results of the synchronous condenser excitation system under the target scenario.

[0040] Through the above steps, based on the target scenario of testing the synchronous condenser excitation system, the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data of the synchronous condenser excitation system are determined. Simulated disturbance data of the simulated power grid model and fault disturbance data simulating predetermined faults are also determined. Based on the target scenario disturbance data, simulated disturbance data, and fault disturbance data, multiple segments of target disturbance data are determined. Based on the simulated power grid model and multiple segments of target disturbance data, the synchronous condenser excitation system is tested, and the test results of the synchronous condenser excitation system under the target scenario are obtained. Because multiple segments of target disturbance data are used, not only are different types of disturbance data tested, but also the disturbance data, which occupies a large storage space, is divided into multiple segments of target disturbance data. This solves the technical problem in related technologies where testing the performance of synchronous condenser excitation systems can only be done based on smaller disturbance data, resulting in incomplete testing.

[0041] As an optional embodiment, based on the target scenario of the test synchronous condenser excitation system, a simulated power grid model connected to the synchronous condenser excitation system and disturbance data of the target scenario for disturbing the synchronous condenser excitation system are determined. The target scenario can be a scenario in a power plant or substation where synchronous condensers and their excitation systems are used. It can be a real scenario (i.e., the data is obtained based on a real scenario) or a virtual scenario (i.e., the data is obtained based on a virtual scenario). By setting real and virtual scenarios, the application scope of this application is broadened. By determining the data based on the target scenario of the test synchronous condenser excitation system, this application can specifically determine the test results of the synchronous condenser excitation system under the target scenario.

[0042] As an optional embodiment, when determining the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data of the disturbed synchronous condenser excitation system based on the target scenario of the test synchronous condenser excitation system, it can be determined in the following way: Obtain the actual power grid parameters and actual scenario disturbance data under the target scenario; determine the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data of the disturbed synchronous condenser excitation system based on the actual power grid parameters and actual scenario disturbance data. Using the actual power grid parameters and actual scenario disturbance data ensures that the test is based on evidence, and the obtained test results are as expected and within a reasonable range. The specific determination method will be described in the optional implementation methods below and will not be elaborated here.

[0043] As an optional embodiment, simulated disturbance data of the simulated power grid model and fault disturbance data of the simulated predetermined fault are determined. The determined simulated disturbance data and fault disturbance data can be random within a reasonable range. That is, the simulated disturbance data can be simulated disturbance data that occurs under various different conditions of the simulated power grid, and the fault disturbance data can be fault disturbance data when various faults occur. This enhances the testing flexibility of this application and allows for testing results under different disturbance data. When various faults appear in the test results, it is possible to determine what kind of disturbance caused them. In the event of a fault in reality, it is possible to react in a timely manner, which is beneficial to the operation of the power grid.

[0044] As an optional implementation, based on the target scenario disturbance data, simulated disturbance data and fault disturbance data, multiple segments of target disturbance data are determined. This means that various types of disturbance data can be identified as multiple segments of target disturbance data, which can then be superimposed and segmented, making testing based on disturbance data more efficient and improving testing efficiency.

[0045] It should be noted that when determining multiple segments of target disturbance data based on target scenario disturbance data, simulated disturbance data, and fault disturbance data, sampling rates corresponding to various data types can be considered. Specifically, the following steps can be taken: determine multiple sampling rates corresponding to the target scenario disturbance data, simulated disturbance data, and fault disturbance data; when different sampling rates exist among these rates, perform interpolation processing on the target scenario disturbance data, simulated disturbance data, and fault disturbance data to obtain interpolated disturbance data; and determine multiple segments of target disturbance data based on this interpolated disturbance data. In other words, interpolation processing is performed on disturbance data at different rates, and multiple segments of target disturbance data are determined based on this interpolated disturbance data. This allows disturbance data from multiple sampling rates to be fitted and superimposed, making the testing process smoother and more orderly.

[0046] As an optional embodiment, when determining multiple segments of target disturbance data based on the difference disturbance data, the multiple segments of disturbance data can be divided according to the storage capacity. Specifically, the initial storage capacity of the difference disturbance data can be determined first, and the difference disturbance data can be divided into multiple segments of target disturbance data based on the initial storage capacity of the difference disturbance data. In this case, the storage capacity of each segment of target disturbance data is less than or equal to the predetermined storage capacity, so that the target disturbance data with a storage capacity less than or equal to the predetermined storage capacity can be input in an orderly manner.

[0047] As an optional implementation, the synchronous condenser excitation system is tested based on a simulated power grid model and multiple target disturbance data to obtain test results under the target scenario. When determining the test results, the fault waveform data can be used for judgment, specifically determining the frequency and waveform of fault waveform data within the target waveform data. Based on the frequency and waveform of the fault waveform data, the test results of the synchronous condenser excitation system under the target scenario are obtained. In other words, the fault frequency can be determined based on the frequency of fault waveform data occurrences, and the fault type can be determined based on the waveform. This allows for a better evaluation of the synchronous condenser excitation system and the determination of more accurate test results under the target scenario. Furthermore, this method allows for understanding the reasons for different waveforms in the fault waveform data, enabling effective analysis and fault location.

[0048] This application aims to analyze the true cause of faults and identify potential hazards in protection devices. By employing a test method combining real-time simulation and disturbance superposition, the operating environment of the synchronous condenser excitation system is constructed. By simulating different operating scenarios and superimposing different system disturbances, the control characteristics of the synchronous condenser excitation system are verified from multiple perspectives, achieving excellent results. This is an effective means of evaluating whether newly built synchronous condenser equipment can adapt to today's complex and ever-changing power grid and reliably perform its protection functions.

[0049] Based on the above embodiments and optional embodiments, an optional implementation method is provided, which is described in detail below.

[0050] An optional embodiment of the present invention provides a method for testing a synchronous condenser excitation system. This method, through a simulated superimposed disturbance testing method and real-time segmentation and splicing technology of the disturbance data, solves the technical problem in related technologies where testing the performance of a synchronous condenser excitation system can only be performed based on relatively small disturbance data, resulting in incomplete testing. The optional embodiments of the present invention are described in detail below:

[0051] Figure 2 This is a schematic diagram of the method provided by an optional embodiment of the present invention, such as... Figure 2 As shown, when testing the excitation system of a synchronous condenser, a power grid model can be simulated in real time to provide the excitation system under test with information on the voltage of the three-phase synchronous condenser terminals, the stator current of the three phases, and the excitation current. By connecting the excitation voltage feedback of the excitation system, a control closed loop is formed. Then, different types, locations, and durations of power system faults are simulated to test the control characteristics of the excitation system.

[0052] S1, based on the target scenario of the test synchronous condenser excitation system, determine the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data of the disturbance synchronous condenser excitation system.

[0053] It should be noted that the target scene disturbance data can be obtained through real-time scene reproduction using the synchronous condenser excitation system. Figure 3 This is a schematic diagram of the ultra-real-time scene reproduction process of the camera excitation system in the optional embodiment of the present invention, as shown below. Figure 3 As shown, the real-time scene reproduction process of the synchronous condenser excitation system is as follows:

[0054] S1.1, Prepare the basic test case and determine the initial simulated power grid model of the synchronous condenser excitation system. The simulated power grid model can be obtained based on the basic test data containing the power grid topology and parameters.

[0055] S1.2, Import the initial pre-made disturbance data;

[0056] S1.3 Perform ultra-real-time simulation scenario reproduction. By adjusting the initial simulated power grid model and disturbance data, determine the waveform data that is basically consistent with the target scenario. If the waveform data that is basically consistent with the target scenario is determined, store the adjusted simulated power grid model, the adjusted disturbance data, and the obtained waveform data, and exit the process. Otherwise, continue to determine until the waveform data that is basically consistent with the target scenario is determined.

[0057] Among them, the adjusted simulated power grid model and the adjusted disturbance data are the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data of the disturbance synchronous condenser excitation system mentioned above.

[0058] It should be noted that after determining the waveform data that is basically consistent with the target scenario, the determined waveform data can also be tested and verified. Figure 4 This is a schematic diagram of the test process for the synchronous condenser excitation system of the method provided in an optional embodiment of the present invention, as shown below. Figure 4 As shown, this ensures that the waveform data corresponds to the target scenario and guarantees the accuracy of the waveform data.

[0059] It should also be noted that when there are multiple target scenarios, the following processing can be performed:

[0060] Figure 5 This is a schematic diagram illustrating the parallel operation of a multi-real-time scene reproduction process in the synchronous condenser excitation system provided by an optional embodiment of the present invention, as shown below. Figure 5 As shown, when multiple test scenarios are required, multiple ultra-real-time reproduction tasks can be parallelized through a task scheduling system. By setting CPU affinity, multiple tasks can be bound to different CPU cores and run independently, ensuring the security and real-time performance of the computational data. Affinity refers to the process running on a designated CPU core for an extended period, minimizing migration to other CPU cores, thus ensuring that each core performs only one task without interference, guaranteeing better real-time performance.

[0061] S2, determine the simulation disturbance data of the simulated power grid model and the fault disturbance data of the simulated predetermined fault;

[0062] S3, based on the target scenario disturbance data, simulated disturbance data and fault disturbance data, and determined multiple segments of target disturbance data;

[0063] During the test, multiple disturbance data can be superimposed. These disturbance data can come from the waveform recording data of the synchronous phasor measurement device in the predetermined scenario of the power plant or substation (same as the disturbance data of the target scenario mentioned above), the simulation disturbance data generated by the simulation system (same as the simulation disturbance data of the simulated power grid model mentioned above), and the waveform recording data of the simulated fault of the dynamic model system (same as the fault disturbance data of the simulated predetermined fault mentioned above). Among these, the multiple disturbance data can be a combination of one or more samples with the same / different sampling rates. At this point, the issues of sampling rate and data storage capacity will be faced.

[0064] 1) Regarding the sampling rate:

[0065] Figure 6 This is a schematic diagram of the method for processing perturbation data with multiple sampling rates provided in the optional embodiments of the invention, such as... Figure 6 As shown, multiple perturbation data may exist with multiple sampling rates. In this case, interpolation processing is required for the data with multiple sampling rates. The specific principle and process are as follows:

[0066] S3.1.1 Compare the sampling rates S1, S2, and S3 of all perturbation data (taking 3 as an example in the figure) with the data playback rate S (the data playback rate is set independently according to the actual application and scenario);

[0067] S3.1.2 If S1, S2, and S3 are all less than the sampling rate of S, then the interpolation operation is performed on S1, S2, and S3 according to the playback rate S. If any of S1, S2, and S3 is greater than S, then the interpolation operation is performed according to the sampling rate greater than S.

[0068] S3.1.3, the interpolation adopts a linear interpolation fitting method, that is, y = a*x + b. Based on the values ​​of two adjacent sampling points of each data source and the output period DT, the sampled value of any sample between two adjacent sampling points of each data source is calculated. This process is repeated to calculate the sampled values ​​of all interpolation points. The calculation method and steps are as follows:

[0069] Assume that the sampled values ​​of any adjacent sampling points of data source 1 are x(n1) and x(n1+1), where n1 is 0, 1, 2, 3, ...;

[0070] Then, interpolation is performed according to the playback rate S to obtain the sampled value y(n1+m*1 / S)=x(n1)+(m*1 / S)*(x(n1+1)-x(n1)) / (1 / S1), where m is the interpolation index between points n1 and n1+1 according to the playback rate S, which is 1,2,3…….

[0071] 2) Regarding the issue of data storage capacity:

[0072] Figure 7 This is a schematic diagram of the data segmentation principle in the optional embodiments of the present invention, such as... Figure 7 As shown, during the test, the duration of the disturbance data obtained after superposition may be quite long, exceeding the limit of the hardware storage resources of the test instrument. In this case, the disturbance data with an extremely long duration can be segmented.

[0073] S3.2.1, Divide the disturbed data into small data blocks, each data block being 4M bytes in size;

[0074] S3.2.2, the formed small data blocks are transmitted to the test process in a one-way manner;

[0075] S3.2.3, The testing process employs data splicing technology to ensure the correctness of data connection with the previous data block;

[0076] S3.2.4, When data in a shared memory is being executed, the program will automatically write the next pre-divided data block into another unidirectional shared memory;

[0077] S3.2.5, and so on, to achieve the function of uninterrupted execution testing of ultra-long-term disturbance data.

[0078] It should be noted that after dividing the data into multiple blocks, each data block is within a test step period. Figure 8 This is a timing diagram of the test process for the synchronous condenser excitation system provided by an optional embodiment of the present invention, as shown below. Figure 8 As shown, the synchronous condenser excitation system test is uniformly controlled by an external clock signal. The minimum value of one test step DT period is 50us, which is divided into three time periods: t1, t2, and t3. Among them: t1: real-time simulation time <10us; t2: disturbance data reading, splicing, and interpolation time <5us; t3: waiting time, which is input according to the period.

[0079] S4. Based on the simulated power grid model and multi-segment target disturbance data, the synchronous condenser excitation system is tested to obtain the test results of the synchronous condenser excitation system under the target scenario.

[0080] It should be noted that if there are multiple tasks to be tested, they can be executed automatically in sequence. Figure 9 This is a schematic diagram illustrating the automated sequential execution of multiple test processes in the synchronous condenser excitation system according to an optional embodiment of the present invention, as shown below. Figure 9 As shown, for test scenarios simulated through the ultra-real-time scenario reproduction process, if there are multiple test scenarios, the test process has an automated sequential execution function, and the specific process is as follows:

[0081] 1) Two test task storage areas are created in the test system, namely storage area 1 and storage area 2;

[0082] 2) The task scheduling system uses the sorting number of tasks in the test queue, numbered according to odd and even numbers, such as 1, 2, 3, 4, ..., n;

[0083] 3) Before the test starts, the task scheduling system loads task number 1 into task storage area 1;

[0084] 4) After the test starts, the task in task storage area 1 is run. At this time, task storage area 1 exclusively uses system resources and I / O resources to test the actual synchronous condenser excitation system.

[0085] 5) During the test in task storage area 1, the task scheduling system will load task number 2 into task storage area 2;

[0086] 6) After the task in task storage area 1 finishes running, the task scheduling system automatically switches to and runs the task in storage area 2. At this time, task storage area 2 exclusively occupies system resources and IO resources to test the actual synchronous condenser excitation system.

[0087] 7) During the test in task storage area 2, the task scheduling system will load task number 3 into task storage area 1;

[0088] 8) Repeatedly switch to load new test tasks and automatically switch to the new tasks, iterating repeatedly to achieve automated sequential execution.

[0089] The above optional implementation methods can achieve at least the following beneficial effects:

[0090] (1) It supports custom system disturbances and superimposes them with real-time simulation to test the actual synchronous condenser excitation system. Custom system disturbances support various types of disturbance data. Compared with traditional fault reproduction methods, this simulation and disturbance superposition test method is not limited by the disturbance method, number of disturbances, or disturbance type. Compared with traditional fault reproduction methods, it can more effectively analyze and locate the cause of the fault and evaluate the control characteristics of the synchronous condenser excitation system.

[0091] (2) It supports real-time segmentation and splicing of ultra-long-term disturbance data and supports uninterrupted input of disturbance data, which is convenient for the needs of long-term test scenarios in the excitation system of the synchronous condenser.

[0092] (3) Supports the fusion processing of perturbation data with multiple sampling rates, and performs smooth interpolation for low-rate sampling processing to reduce test errors;

[0093] (4) The provided test process supports parallel operation of multiple real-time scenario reproduction processes and automated sequential execution of multiple test processes, which greatly improves test efficiency.

[0094] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0095] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0096] Example 2

[0097] According to embodiments of the present invention, an apparatus for implementing the above-described test method for a synchronous condenser excitation system is also provided. Figure 10 This is a structural block diagram of a synchronous condenser excitation system testing device according to an embodiment of the present invention, such as... Figure 10 As shown, the device includes: a first determining module 1002, a second determining module 1004, a third determining module 1006, and a testing module 1008. The device will be described in detail below.

[0098] The first determining module 1002 is used to determine the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data of the synchronous condenser excitation system based on the target scenario of the test synchronous condenser excitation system; the second determining module 1004 is connected to the first determining module 1002 and is used to determine the simulation disturbance data of the simulated power grid model and the fault disturbance data of the simulated predetermined fault; the third determining module 1006 is connected to the second determining module 1004 and is used to determine multiple segments of target disturbance data based on the target scenario disturbance data, simulation disturbance data and fault disturbance data; the testing module 1008 is connected to the third determining module 1006 and is used to test the synchronous condenser excitation system based on the simulated power grid model and the multiple segments of target disturbance data to obtain the test results of the synchronous condenser excitation system under the target scenario.

[0099] It should be noted that the first determining module 1002, the second determining module 1004, the third determining module 1006 and the test module 1008 mentioned above correspond to steps S102 to S108 in the method for testing the excitation system of the synchronous condenser. The multiple modules and the corresponding steps are the same in terms of the instances and application scenarios implemented, but are not limited to the content disclosed in the above embodiment 1.

[0100] Example 3

[0101] According to another aspect of the present invention, an electronic device is also provided, comprising: a processor; and a memory for storing processor-executable instructions, wherein the processor is configured to execute instructions to implement the synchronous condenser excitation system test method of any of the above embodiments.

[0102] Example 4

[0103] According to another aspect of the present invention, a computer-readable storage medium is also provided, which, when the instructions in the computer-readable storage medium are executed by a processor of an electronic device, enables the electronic device to perform the synchronous condenser excitation system test method described above.

[0104] Example 5

[0105] According to another aspect of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements the synchronous condenser excitation system test method described in any of the preceding claims.

[0106] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0107] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0108] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0109] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0110] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0111] If the integrated unit is implemented as 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 technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0112] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A test method for a synchronous condenser excitation system, characterized in that, include: Based on the target scenario of the test synchronous condenser excitation system, determine the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data that disturbs the synchronous condenser excitation system; Determine the simulation disturbance data of the simulated power grid model and the fault disturbance data of the simulated predetermined fault; Based on the target scenario disturbance data, the simulated disturbance data, and the fault disturbance data, multiple segments of target disturbance data are determined; Based on the simulated power grid model and the multi-segment target disturbance data, the synchronous condenser excitation system is tested, and the test results of the synchronous condenser excitation system under the target scenario are obtained. The step of determining multiple segments of target disturbance data based on the target scene disturbance data, the simulated disturbance data, and the fault disturbance data includes: determining multiple sampling rates corresponding to the target scene disturbance data, the simulated disturbance data, and the fault disturbance data; when different sampling rates exist among the multiple sampling rates, performing interpolation processing on the target scene disturbance data, the simulated disturbance data, and the fault disturbance data to obtain interpolated disturbance data; determining the initial storage capacity of the interpolated disturbance data; and dividing the interpolated disturbance data into multiple segments of target disturbance data based on the initial storage capacity of the interpolated disturbance data, wherein the storage capacity of each segment of target disturbance data is less than or equal to the predetermined storage capacity of the interpolated disturbance data, thereby determining the multiple segments of target disturbance data.

2. The method according to claim 1, characterized in that, The step involves testing the synchronous condenser excitation system based on the simulated power grid model and the multi-segment target disturbance data, obtaining the test results of the synchronous condenser excitation system under the target scenario, including: Based on the simulated power grid model and the multi-segment target disturbance data, the synchronous condenser excitation system is tested to obtain the target waveform data of the synchronous condenser excitation system; Based on the target waveform data, the test results of the synchronous condenser excitation system under the target scenario are obtained.

3. The method according to claim 2, characterized in that, The step of determining the test results of the synchronous condenser excitation system under the target scenario based on the target waveform data includes: Determine the number of times fault waveform data appears in the target waveform data, and the waveform of the fault waveform data; Based on the number of occurrences of the fault recording data and the waveform of the fault recording data, the test results of the synchronous condenser excitation system under the target scenario are obtained.

4. The method according to any one of claims 1 to 3, characterized in that, The target scenario based on the test synchronous condenser excitation system determines the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data that disturbs the synchronous condenser excitation system, including: Obtain the actual power grid parameters and actual scenario disturbance data under the target scenario; Based on the actual power grid parameters and the actual scenario disturbance data, the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data that disturbs the synchronous condenser excitation system are determined.

5. A testing device for a synchronous condenser excitation system, characterized in that, include: The first determining module is used to determine, based on the target scenario of the test synchronous condenser excitation system, the simulated power grid model connected to the synchronous condenser excitation system and the target scenario disturbance data that disturbs the synchronous condenser excitation system; The second determining module is used to determine the simulation disturbance data of the simulated power grid model and the fault disturbance data of the simulated predetermined fault; The third determining module is used to determine multiple segments of target disturbance data based on the target scene disturbance data, the simulated disturbance data, and the fault disturbance data; The testing module is used to test the synchronous condenser excitation system based on the simulated power grid model and the multi-segment target disturbance data, and to obtain the test results of the synchronous condenser excitation system under the target scenario. The third determining module is further configured to determine the target scene disturbance data, the multiple sampling rates corresponding to the simulated disturbance data and the fault disturbance data; when different sampling rates exist among the multiple sampling rates, the target scene disturbance data is differentially processed, and the simulated disturbance data and the fault disturbance data are compared to obtain differential disturbance data; the initial storage capacity of the differential disturbance data is determined; based on the initial storage capacity of the differential disturbance data, the differential disturbance data is segmented into multiple segments of target disturbance data, wherein the storage capacity of each segment of target disturbance data is less than or equal to the predetermined storage capacity of the differential disturbance data, and the multiple segments of target disturbance data are determined.

6. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute the instructions to implement the synchronous condenser excitation system test method as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, When the instructions in the computer-readable storage medium are executed by the processor of the electronic device, the electronic device is able to perform the synchronous condenser excitation system test method as described in any one of claims 1 to 4.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the test method for the synchronous condenser excitation system as described in any one of claims 1 to 4.

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