Test and evaluation method, system, device and equipment for safety and stability control strategy

Abstract

The present application relates to a test and evaluation method, system, device and equipment for a safety and stability control strategy. The method includes obtaining action message information of a safety and stability control device executing a stabilization control strategy and simulation result data output by a power grid simulation model based on the action message information; analyzing the simulation result data according to the stabilization control strategy to obtain action exit information of the safety and stability control device; and determining the effectiveness of the safety and stability control device executing the stabilization control strategy based on whether the action exit information is consistent with the action message information. The test and evaluation method for the safety and stability control strategy automatically obtains the action message information of the safety and stability control device executing the stabilization control strategy and compares it with the action exit information obtained by simulating based on the action message information to identify the effectiveness of the full stability control device executing the stabilization control strategy, thereby solving the problem that the reliability test of the existing simulation device of the stabilization control system is performed manually and the accuracy of the analysis results cannot be guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of power simulation model testing, and in particular to a test and evaluation method, system, device and equipment for a safe and stable control strategy. Background Art

[0002] Safety and stability control devices are control devices installed in power plants or substations to ensure the stability of power systems when encountering large disturbances. Safety and stability control devices are used to implement functions such as machine tripping, load shedding, rapid output reduction, and emergency DC power increase or decrease. They are important facilities for maintaining the safe and stable operation of power systems. The power grid safety and stability control system (referred to as "stability control system") protects local or entire power systems. The widespread application of stability control systems has built a second line of defense for modern power grids. The complex grid structure and operating characteristics of modern power grids, as well as the commissioning of various types and large-scale stability control systems, mean that any malfunction or refusal of the stability control system may undermine the safety and stability of the power grid. Therefore, it is particularly important to evaluate the control strategy of the stability control system and verify the expected effects to ensure the safety of the power grid.

[0003] Because of the importance of the stability control system, its control strategy must be evaluated and its expected effectiveness verified through comprehensive reliability testing. This is the final step before a stability control system is put into operation. This comprehensive reliability test comprehensively examines all previous steps in the stability control system, rather than examining any particular step in isolation. This is what distinguishes it from the various tests conducted by stability control system manufacturers. Specifically, a comprehensive reliability test verifies the correctness of the stability technology principles, the rationality of the technical solution, the rigor of the stability control system's structural design, the reliability of the device hardware and software, the correctness and applicability of the control strategy and settings, and the accuracy of the system's response. Therefore, this requires a higher level of fidelity in the on-site simulation of the test environment, more accurate component and stability control system models, real-time simulation rather than offline simulation, closed-loop testing rather than open-loop testing, and direct connection to the actual device rather than logical software simulation.

[0004] Currently, real-time digital simulation can be used to perform real-time closed-loop testing on the stability control system. However, the results of existing real-time digital simulation tests on the stability control system often need to be recorded and analyzed manually. The analysis process is subjective, and the accuracy of the analysis results cannot be guaranteed. Summary of the Invention

[0005] The embodiments of the present application provide a test and evaluation method, system, device and equipment for a safe and stable control strategy, which is used to solve the technical problem that the reliability test of the simulation device of the existing stability control system is performed through manual judgment and the accuracy of the analysis results cannot be guaranteed.

[0006] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0007] A test and evaluation method for a safety and stability control strategy comprises the following steps:

[0008] Acquiring action message information of the safety and stability control device executing the stability control strategy and simulation result data output by the power grid simulation model according to the action message information;

[0009] Analyzing the simulation result data according to the stability control strategy to obtain the action exit information of the safety and stability control device;

[0010] Determining the effectiveness of the stabilization control strategy executed by the safety and stability control device based on whether the action exit information is consistent with the action message information;

[0011] The power grid simulation model is a simulation model constructed based on a power grid with a safety and stability control device.

[0012] Preferably, analyzing the simulation result data according to the stabilization control strategy to obtain the action exit information of the safety and stability control device includes:

[0013] If the stability control strategy executed by the safety and stability control device is the N-2 stability control strategy, the action message information includes the total number of cut-offs, the cut-off priority order, and the cut-off command and cut-off amount of each actuator;

[0014] The simulated machine cutting amount is obtained by calculating based on the simulation result data in combination with the stability control requirement calculation formula of the stability control strategy; the action exit information of the safety and stability control device is determined based on the simulated machine cutting amount in combination with the stability control judgment basis of the stability control strategy; the action exit information includes the exit action of the actuator.

[0015] Preferably, the effectiveness of the safety and stability control device executing the stabilization control strategy is determined based on whether the action exit information is consistent with the action message information, including: whether all the execution elements corresponding to the exit action are consistent with the execution elements corresponding to the machine cutting command. If they are consistent, the safety and stability control device executing the stabilization control strategy is effective; if they are inconsistent, the safety and stability control device executing the stabilization control strategy is invalid.

[0016] The present application also provides a test and evaluation system for a safety and stability control strategy, comprising: a test and evaluation module, a simulation workstation, and a real-time simulator, wherein the real-time simulator is connected to a safety and stability control device;

[0017] The safety and stability control device is used to provide the real-time simulator with action message information for executing the stability control strategy;

[0018] The simulation workstation is used to construct a power grid simulation model according to the power grid where the safety and stability control device is applied, and transmit the power grid simulation model to the real-time simulator;

[0019] The real-time simulator is configured to perform simulation according to the action message information through the power grid simulation model, output simulation result data, and transmit the simulation result data to the test and evaluation module;

[0020] The test evaluation module is used to evaluate the effectiveness of the stabilization control strategy according to the above-mentioned test evaluation method of the safety and stability control strategy based on the simulation result data and the action message information.

[0021] Preferably, the safety and stability control strategy test and evaluation system includes an interface module, wherein a first end of the interface module is connected to the real-time simulator, and a second end of the interface module is connected to the safety and stability control device, and the interface module is used to transmit data between the real-time simulator and the safety and stability control device. The interface module is an interface board.

[0022] Preferably, the simulation workstation is also used to update the power grid simulation model according to changes in the power grid where the safety and stability control device is applied; the real-time simulator is also used to run and output power grid simulation data according to the updated power grid simulation model, and transmit the power grid simulation data to the safety and stability control device through the interface module; the safety and stability control device is also used to change the stability control strategy according to the power grid simulation data and obtain change action message information.

[0023] The present application also provides a test and evaluation device for a safety and stability control strategy, comprising a data acquisition module, a data analysis module, and a comparison and evaluation module;

[0024] The data acquisition module is used to obtain action message information of the safety and stability control device executing the stability control strategy and simulation result data output by the power grid simulation model based on the action message information;

[0025] The data analysis module is used to analyze the simulation result data according to the stability control strategy to obtain the action exit information of the safety and stability control device;

[0026] The comparison and evaluation module is used to determine the effectiveness of the stabilization control strategy executed by the safety and stability control device based on whether the action exit information is consistent with the action message information;

[0027] The power grid simulation model is a simulation model constructed based on a power grid with a safety and stability control device.

[0028] Preferably, the data analysis module is further configured to, based on the fact that the stability control strategy executed by the safety and stability control device is an N-2 stability control strategy, then the action message information includes the total number of machine cuts, the machine cut priority order, and the machine cut command and machine cut quantity of each actuator; calculate the simulated machine cut quantity based on the simulation result data in combination with the stability control requirement calculation formula of the stability control strategy; determine the action exit information of the safety and stability control device based on the simulated machine cut quantity in combination with the stability control judgment basis of the stability control strategy; the action exit information includes the exit action of the actuator;

[0029] The comparison and evaluation module is also used to check whether all the execution elements corresponding to the export action are consistent with the execution elements corresponding to the machine cutting command. If they are consistent, the safety and stability control device executes the stability control strategy effectively; if they are inconsistent, the safety and stability control device executes the stability control strategy invalidly.

[0030] The present application also provides a terminal device, including a processor and a memory;

[0031] The memory is used to store program code and transmit the program code to the processor;

[0032] The processor is used to execute the above-mentioned test and evaluation method of the safety and stability control strategy according to the instructions in the program code.

[0033] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages: the test and evaluation method, system, device and equipment of the safety and stability control strategy, the method includes obtaining the action message information of the safety and stability control device executing the stabilization control strategy and the simulation result data output by the power grid simulation model according to the action message information; analyzing the simulation result data according to the stabilization control strategy to obtain the action exit information of the safety and stability control device; and determining the effectiveness of the safety and stability control device executing the stabilization control strategy according to whether the action exit information is consistent with the action message information. The test and evaluation method of the safety and stability control strategy automatically obtains the action message information of the safety and stability control device executing the stabilization control strategy and compares it with the action exit information obtained by simulating according to the action message information to identify the effectiveness of the full stability control device executing the stabilization control strategy, thereby solving the technical problem that the reliability test of the existing simulation device of the stabilization control system is carried out through manual judgment and the accuracy of the analysis results cannot be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. 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 labor.

[0035] Figure 1 This is a flowchart of the steps of the test and evaluation method of the safety and stability control strategy described in the embodiment of the present application;

[0036] Figure 2 This is a framework flow chart of the test and evaluation system for the safety and stability control strategy described in the embodiment of the present application;

[0037] Figure 3 This is a framework diagram of a test and evaluation device for a safety and stability control strategy according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to make the purpose, features, and advantages of the invention of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described below are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] The embodiments of the present application provide a test and evaluation method, system, device and equipment for a safety and stability control strategy, which can automatically obtain the action message information of the safety and stability control device and the simulation result data output by the power grid simulation model, and automatically determine the effectiveness of the safety and stability control device in executing the stability control strategy. It is used to solve the technical problem that the reliability test of the simulation device of the stability control system is carried out through manual judgment and the accuracy of the analysis results cannot be guaranteed.

[0040] Example 1:

[0041] Figure 1 This is a flowchart of the steps of the test and evaluation method of the safety and stability control strategy described in an embodiment of the present application.

[0042] like Figure 1 As shown, the embodiment of the present application provides a test and evaluation method for a safety and stability control strategy, comprising the following steps:

[0043] S1. Obtaining action message information of the safety and stability control device executing the stability control strategy and simulation result data output by the power grid simulation model based on the action message information. The power grid simulation model is a simulation model constructed based on the power grid with the safety and stability control device.

[0044] It should be noted that in step S1, the first step is to obtain action message information from the safety and stability control device in executing the stabilization control strategy on the power grid; the second step is to use the constructed power grid simulation model to perform simulation based on the action message information to obtain simulation result data. In this embodiment, the power grid simulation model performs simulation based on the action message information and the stabilization control strategy to obtain simulation result data. For example, the simulation result data includes line output power.

[0045] In the embodiment of the present application, the message can be displayed in the following format:

[0046] 01 0ms device startup

[0047] 02 XXXms XX line permanently trips

[0048] 03 XXX ms XXX strategy action, issue XXX power plant shutdown command, need to cut power XXX MW, cut #1 unit XXX MW, cut #2 unit XXX MW

[0049] 04 XXX ms device action export

[0050] 05 XXX ms event ends.

[0051] S2. Analyze the simulation result data according to the stability control strategy to obtain the action output information of the safety and stability control device.

[0052] It should be noted that in step S2, the simulation result data is processed according to the stabilization control strategy to obtain action exit information, which provides comparative data for subsequent evaluation.

[0053] Furthermore, the simulation result data is analyzed according to the stability control strategy to obtain the action output information of the safety and stability control device, including:

[0054] If the stability control strategy executed by the safety and stability control device is the N-2 stability control strategy, the action message information includes the total number of cut-offs, the cut-off priority order, and the cut-off command and cut-off amount of each actuator;

[0055] The simulated machine cutting amount is obtained based on the simulation result data combined with the stability control requirement calculation formula of the stability control strategy; the action output information of the safety and stability control device is determined based on the simulated machine cutting amount combined with the stability control judgment basis of the stability control strategy; the action output information includes the output action of the actuator.

[0056] It should be noted that if the stability control strategy executed by the security and stability control device is the N-2 stability control strategy, the security and stability control device is tested and verified based on the N-2 stability control strategy to ensure the effectiveness of the security and stability control device. Among them, the N-2 stability control strategy is to trip the units of a certain power plant after N-2 of a double-circuit line in the power grid. The action message information includes the total amount of tripping, the tripping priority order, and the tripping command and tripping amount of each executing element. If the executing element is a generating unit, the tripping priority order is Generator Set #1, Generator Set #2, Generator Set #3, Generator Set #4; the tripping amounts of the current outputs of each generating unit are P1, P2, P3, and P4 respectively. The transmission power before N-2 of the double-circuit line in the simulation result data is P L , and the calculation formula for the stability control requirement is P C = k * P L , where k is a fixed value parameter, and P C is the simulated tripping amount. The stability control judgment basis is P1 + P2 < P C < P1 + P2 + P3, and the action outlet information is obtained. The action outlet information includes that the outlet circuit breaker statuses of Generator Set #1, Generator Set #2, and Generator Set #3 are open.

[0057] S3. Determine the effectiveness of the security and stability control device in executing the stability control strategy by comparing whether the action outlet information is consistent with the action message information.

[0058] It should be noted that in step S3, the effectiveness of the security and stability control device in executing the stability control strategy is judged by comparing whether the executing elements in the action outlet information are consistent with those in the action message information.

[0059] Furthermore, determining the effectiveness of the security and stability control device in executing the stability control strategy by comparing whether the action outlet information is consistent with the action message information includes: whether all the executing elements corresponding to the outlet actions are consistent with the executing elements corresponding to the tripping commands. If they are consistent, the security and stability control device is effective in executing the stability control strategy; if not, the security and stability control device is ineffective in executing the stability control strategy.

[0060] It should be noted that if the action outlet statuses of the three executing elements, namely Generator Set #1, Generator Set #2, and Generator Set #3, in the action outlet information are open, and the action message information contains the tripping commands for Generator Set #1, Generator Set #2, and Generator Set #3, it indicates that the operations of the executing elements in the action outlet information and the action message information are consistent, and it is judged that the security and stability control device is effective in executing the stability control strategy; otherwise, it is judged that the security and stability control device is ineffective in executing the stability control strategy.

[0061] The present application provides a test and evaluation method for a safety and stability control strategy, comprising obtaining action message information of a safety and stability control device executing a stabilization control strategy and simulation result data output by a power grid simulation model based on the action message information; analyzing the simulation result data according to the stabilization control strategy to obtain action exit information of the safety and stability control device; and determining the effectiveness of the safety and stability control device executing the stabilization control strategy based on whether the action exit information is consistent with the action message information. The test and evaluation method for a safety and stability control strategy automatically obtains the action message information of a safety and stability control device executing a stabilization control strategy and compares it with the action exit information obtained by simulating the action message information to identify the effectiveness of the full stabilization control device executing the stabilization control strategy, thereby solving the technical problem that the reliability test of the existing simulation device of the stabilization control system is conducted through manual judgment, and the accuracy of the analysis results cannot be guaranteed.

[0062] In one embodiment of the present application, before analyzing the simulation result data according to the stability control strategy to obtain the action exit information of the safety and stability control device, the test and evaluation method of the safety and stability control strategy includes:

[0063] The stabilization control strategy executed by the safety and stability control device is the N-2 stabilization control strategy for the double-circuit line of the power grid. The simulation result data is used to determine whether the double-circuit line executes the N-2 tripping action. Only when the N-2 tripping action is executed, the simulation result data is analyzed according to the stabilization control strategy to obtain the action exit information of the safety and stability control device.

[0064] It should be noted that if the power on the double-circuit line drops to zero and the output power of the double-circuit line falls below a power threshold according to the simulation results, the double-circuit line executes an N-2 tripping action. The power threshold can be set as needed and is not limited here. In this embodiment, if the simulation results determine that the double-circuit line does not execute an N-2 tripping action, the double-circuit loop N-2 stabilization control strategy is invalid, meaning that the safety and stability control device is ineffective in executing the stabilization control strategy.

[0065] Example 2:

[0066] Figure 2 This is a framework flow chart of the test and evaluation system for the safety and stability control strategy described in an embodiment of the present application.

[0067] like Figure 2 As shown, an embodiment of the present application provides a test and evaluation system for a safety and stability control strategy, including: a test and evaluation module 10, a simulation workstation 20 and a real-time simulator 30, and the real-time simulator 10 is connected to a safety and stability control device 40.

[0068] In an embodiment of the present application, the safety and stability control device 40 can be used to provide action message information for executing the stability control strategy to the real-time simulator 30.

[0069] In an embodiment of the present application, the simulation workstation 20 can be used to construct a power grid simulation model based on the power grid where the safety and stability control device 10 is applied, and transmit the power grid simulation model to the real-time simulator 30.

[0070] It should be noted that a power grid fault may be triggered at the simulation workstation 20 to change the power grid simulation model and obtain an updated power grid simulation model.

[0071] In the embodiment of the present application, the real-time simulator 30 can be used to perform simulation according to the action message information using the power grid simulation model, output simulation result data, and transmit the simulation result data to the test and evaluation module 10. The real-time simulator 30 is also used to operate according to the updated power grid simulation model to output power grid simulation data, and transmit the power grid simulation data to the safety and stability control device 40.

[0072] It should be noted that the power grid simulation data includes voltage analog values, current analog values, circuit breaker status values, etc. In this embodiment, the real-time simulator 30 receives action messages containing action signals (such as a trip command) transmitted by the safety and stability control device 40 and controls the actions of corresponding actuators on the power grid simulation model.

[0073] In an embodiment of the present application, the test evaluation module 10 can be used to evaluate the effectiveness of the stabilization control strategy according to the above-mentioned test evaluation method of the safety and stability control strategy based on the simulation result data and action message information.

[0074] It should be noted that the content of the test and evaluation method of the safety and stability control strategy has been elaborated in detail in the first embodiment, and will not be elaborated in detail in the second embodiment.

[0075] The test and evaluation system of the safety and stability control strategy can automatically obtain the action message information of the safety and stability control device and the simulation result data of the real-time simulator through the test and evaluation module, and use the test and evaluation module to automatically judge the effectiveness of the stabilization control strategy of the safety and stability control device.

[0076] In one embodiment of the present application, the test and evaluation system of the safety and stability control strategy includes an interface module 50, the first end of the interface module 50 is connected to the real-time simulator 30, the second end of the interface module 50 is connected to the safety and stability control device 40, and the interface module 50 is used to transmit data between the real-time simulator 30 and the safety and stability control device 50.

[0077] It should be noted that the interface module 50 is an interface card. The data transmitted by the interface module 50 includes the action signal in the action message information and the power grid simulation data.

[0078] In one embodiment of the present application, the simulation workstation 20 is also used to update the power grid simulation model according to changes in the power grid where the safety and stability control device 40 is applied; the real-time simulator is also used to run and output power grid simulation data according to the updated power grid simulation model, and transmit the power grid simulation data to the safety and stability control device 40 through the interface module 50; the safety and stability control device 40 is also used to change the stabilization control strategy according to the power grid simulation data, obtain the change action message information, and then the test evaluation module 10 evaluates the effectiveness of the stabilization control strategy based on the change action message information and the corresponding new simulation result data.

[0079] It should be noted that the safety and stability control device 40 generates change action message information according to internal preset strategy logic by comparing the changes of the previous and subsequent power grid simulation data.

[0080] Example 2:

[0081] Figure 3 This is a framework diagram of a test and evaluation device for a safety and stability control strategy according to an embodiment of the present application.

[0082] like Figure 3 As shown, the embodiment of the present application further provides a test and evaluation device for a safety and stability control strategy, comprising a data acquisition module 100, a data analysis module 200 and a comparison and evaluation module 300;

[0083] The data acquisition module 100 is used to obtain the action message information of the safety and stability control device executing the stability control strategy and the simulation result data output by the power grid simulation model according to the action message information;

[0084] The data analysis module 200 is used to analyze the simulation result data according to the stability control strategy to obtain the action output information of the safety and stability control device;

[0085] The comparison and evaluation module 300 is used to determine the effectiveness of the stabilization control strategy executed by the safety and stability control device based on whether the action exit information is consistent with the action message information;

[0086] Among them, the power grid simulation model is a simulation model constructed based on a power grid with a safe and stable control device.

[0087] In an embodiment of the present application, the data analysis module 200 is also used to determine that the stabilization control strategy executed by the safety and stability control device is an N-2 stabilization control strategy, and the action message information includes the total amount of machine cutting, the machine cutting priority order, and the machine cutting command and machine cutting amount of each execution element; the simulated machine cutting amount is obtained according to the simulation result data combined with the stabilization control requirement calculation formula of the stabilization control strategy; the action exit information of the safety and stability control device is determined according to the simulated machine cutting amount combined with the stabilization control judgment basis of the stabilization control strategy; the action exit information includes the exit action of the execution element.

[0088] In an embodiment of the present application, the comparison and evaluation module 300 is also used to determine whether all the execution elements corresponding to the export actions are consistent with the execution elements corresponding to the machine cutting command. If they are consistent, the safety and stability control device executes the stability control strategy effectively; if they are inconsistent, the safety and stability control device executes the stability control strategy invalidly.

[0089] It should be noted that the modules in the device of Example 3 correspond to the steps in the method of Example 1. The content of the test and evaluation method of the safety and stability control strategy has been elaborated in detail in Example 1, and the content of the modules in the device will no longer be elaborated in this Example 3.

[0090] Example 4:

[0091] An embodiment of the present application provides a terminal device, including a processor and a memory;

[0092] A memory, configured to store program codes and transmit the program codes to a processor;

[0093] The processor is used to execute the above-mentioned test and evaluation method of the safety and stability control strategy according to the instructions in the program code.

[0094] It should be noted that the processor is configured to execute the steps of the aforementioned embodiment of the test and evaluation method for a safety and stability control strategy according to the instructions in the program code. Alternatively, the processor implements the functions of the modules / units in the aforementioned embodiments of the system / device when executing the computer program.

[0095] For example, a computer program may be divided into one or more modules / units, one or more of which are stored in a memory and executed by a processor to complete the present application. One or more modules / units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in a terminal device.

[0096] Terminal devices can be computing devices such as desktop computers, laptops, PDAs, and cloud servers. Terminal devices may include, but are not limited to, processors and memory. Those skilled in the art will appreciate that this does not constitute a limitation on terminal devices and may include more or fewer components than shown, or a combination of certain components, or different components. For example, terminal devices may also include input / output devices, network access devices, buses, and the like.

[0097] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0098] Memory can be an internal storage unit of a terminal device, such as a hard drive or memory. It can also be an external storage device, such as a plug-in hard drive, a SmartMedia Card (SMC), a Secure Digital (SD) card, or a flash memory card. Furthermore, memory can include both internal and external storage units. Memory is used to store computer programs and other programs and data required by the terminal device. Memory can also be used to temporarily store data that has been output or is about to be output.

[0099] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0101] The units described as separate components may or may not be physically separate, and 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 network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0102] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0103] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially 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, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0104] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A test and evaluation method for a safety and stability control strategy, characterized in that: The following steps are involved: Acquiring action message information of the safety and stability control device executing the stability control strategy and simulation result data output by the power grid simulation model according to the action message information; Analyzing the simulation result data according to the stability control strategy to obtain the action exit information of the safety and stability control device; Determining the effectiveness of the stabilization control strategy executed by the safety and stability control device based on whether the action exit information is consistent with the action message information; Wherein, the power grid simulation model is a simulation model constructed based on a power grid with a safety and stability control device; The simulation result data is analyzed according to the stability control strategy to obtain the action output information of the safety and stability control device, including: If the stability control strategy executed by the safety and stability control device is the N-2 stability control strategy, the action message information includes the total number of cut-offs, the cut-off priority order, and the cut-off command and cut-off amount of each actuator; The simulated power-off amount is calculated based on the simulation result data in combination with the stability control requirement calculation formula of the stability control strategy; the action output information of the safety and stability control device is determined based on the simulated power-off amount in combination with the stability control judgment basis of the stability control strategy; the action output information includes the output action of the actuator; If the actuating element is a generator set and the number is four, the four generator sets are the first generator set, the second generator set, the third generator set and the fourth generator set respectively. The simulation result data includes the transmission power before the double-circuit line N-2, and the calculation formula for the stable control requirement is P C = k * P L , where k is a fixed-value parameter, P C is the simulated generator tripping amount, and P L is the transmission power before the double-circuit line N-2; the stable control judgment basis is P1 + P2 < P C < P1 + P2 + P3, then the action outlet information includes that the outlet breaker states of the first generator set, the second generator set, and the third generator set are all tripped; where P1 is the generator tripping amount of the current output of the first generator set, P2 is the generator tripping amount of the current output of the second generator set, and P3 is the generator tripping amount of the current output of the third generator set.

2. The test and evaluation method for a safety and stability control strategy according to claim 1, characterized in that: The effectiveness of the safety and stability control device executing the stabilization control strategy is determined based on whether the action exit information is consistent with the action message information, including: whether all the execution elements corresponding to the exit action are consistent with the execution elements corresponding to the machine cutting command. If they are consistent, the safety and stability control device executing the stabilization control strategy is effective; if they are inconsistent, the safety and stability control device executing the stabilization control strategy is invalid.

3. A test and evaluation system for a safe and stable control strategy, characterized in that: include: A test evaluation module, a simulation workstation and a real-time simulator, wherein the real-time simulator is connected to the safety and stability control device; The safety and stability control device is used to provide the real-time simulator with action message information for executing the stability control strategy; The simulation workstation is used to construct a power grid simulation model according to the power grid where the safety and stability control device is applied, and transmit the power grid simulation model to the real-time simulator; The real-time simulator is configured to perform simulation according to the action message information through the power grid simulation model, output simulation result data, and transmit the simulation result data to the test and evaluation module; The test evaluation module is used to evaluate the effectiveness of the stabilization control strategy according to the test evaluation method of the safety and stability control strategy as claimed in claim 1 or 2 based on the simulation result data and the action message information.

4. The test and evaluation system for the safety and stability control strategy according to claim 3, characterized in that: It includes an interface module, a first end of the interface module is connected to the real-time simulator, a second end of the interface module is connected to the safety and stability control device, and the interface module is used to transmit data between the real-time simulator and the safety and stability control device.

5. The test and evaluation system for the safety and stability control strategy according to claim 4, characterized in that: The interface module is an interface board.

6. The test and evaluation system for the safety and stability control strategy according to claim 4, characterized in that: The simulation workstation is also used to update the power grid simulation model according to changes in the power grid where the safety and stability control device is applied; the real-time simulator is also used to run and output power grid simulation data based on the updated power grid simulation model, and transmit the power grid simulation data to the safety and stability control device through the interface module; the safety and stability control device is also used to change the stability control strategy according to the power grid simulation data and obtain change action message information.

7. A test and evaluation device for a safe and stable control strategy, characterized in that: It includes data acquisition module, data analysis module and comparison and evaluation module; The data acquisition module is used to obtain action message information of the safety and stability control device executing the stability control strategy and simulation result data output by the power grid simulation model based on the action message information; The data analysis module is used to analyze the simulation result data according to the stability control strategy to obtain the action exit information of the safety and stability control device; The comparison and evaluation module is used to determine the effectiveness of the stabilization control strategy executed by the safety and stability control device based on whether the action exit information is consistent with the action message information; Wherein, the power grid simulation model is a simulation model constructed based on a power grid with a safety and stability control device; The data analysis module is further configured to, based on the N-2 stabilization control strategy executed by the safety and stability control device, determine that the action message information includes the total number of machine cuts, the machine cut priority order, and the machine cut command and machine cut quantity of each actuator; calculate the simulated machine cut quantity based on the simulation result data combined with the stabilization control requirement calculation formula of the stabilization control strategy; determine the action exit information of the safety and stability control device based on the simulated machine cut quantity combined with the stabilization control judgment basis of the stabilization control strategy; the action exit information includes the exit action of the actuator; If the execution element is a generator set and the number is four, the four generator sets are the first generator set, the second generator set, the third generator set and the fourth generator set respectively. The simulation result data includes the transmission power before the double-circuit line N-2, and the calculation formula for the stable control requirement is P C = k * P L , where k is a fixed value parameter, P C is the amount of generator tripping for simulation, and P L is the transmission power before the double-circuit line N-2; the basis for stable control judgment is P1 + P2 < P C < P1 + P2 + P3, then the action outlet information includes that the outlet breaker states of the first generator set, the second generator set and the third generator set are all tripped; where P1 is the amount of generator tripping for the current output of the first generator set, P2 is the amount of generator tripping for the current output of the second generator set, and P3 is the amount of generator tripping for the current output of the third generator set.

8. The test and evaluation device for a safety and stability control strategy according to claim 7, characterized in that: The comparison and evaluation module is also used to check whether all the execution elements corresponding to the export action are consistent with the execution elements corresponding to the machine cutting command. If they are consistent, the safety and stability control device executes the stability control strategy effectively; if they are inconsistent, the safety and stability control device executes the stability control strategy invalidly.

9. A terminal device, characterized in that: including a processor and a memory; The memory is used to store program code and transmit the program code to the processor; The processor is used to execute the test and evaluation method of the safety and stability control strategy as described in claim 1 or 2 according to the instructions in the program code.

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