Safety and stability control system strategy verification method and device

Abstract

The embodiment of the present invention discloses a method and device for verifying the strategy of a safe and stable control system, the method comprising: building a power grid structure that needs to verify the strategy of a safe and stable control system in an RTDS platform system; writing the faults that need to be simulated in the RTDS platform system; for each target power value in a plurality of preset target power values, the RTDS platform system automatically adjusts the parameters to make the unit output meet the allowable range of the target power value; for each target power value, automatically executing each fault that needs to be simulated when the unit output meets the allowable range of the target power value. The present invention can automatically adjust the target power and perform automatic fault simulation, thereby improving the efficiency of verifying the strategy of a safe and stable control system.

Description

Technical Field

[0001] The present invention relates to a safety and stability control system, and in particular to a safety and stability control system strategy verification method and device. Background Art

[0002] The safety and stability control system (hereinafter referred to as the "stability control system") involves many plants and stations. The AC and DC parts of some stability control systems are composed of equipment from different manufacturers, and some stability control system A / B sets are composed of different manufacturers. The AC / DC hybrid regional power grid stability control system strategy is relatively complex. Therefore, the stability control system participates in the calculation of the AC and switch quantities of different sections. Therefore, the strategy verification of the stability control system is quite time-consuming and manpower-intensive. With the large-scale access of new energy to the power grid in recent years, the grid structure has been constantly changing, and the strategy of the stability control system will also change accordingly. Timely adjustment of the stability control strategy is the basis for ensuring the safety and stability of the power grid. However, the adjustment of the stability control strategy will involve another factory test of the stability control system, which will greatly increase the hidden dangers of safe operation of the power grid and the huge workload.

[0003] At present, the main means of verifying the strategy of the stability control system is the real-time simulation test of the power grid security and stability control system based on the RTDS platform. The stability control system to be tested is connected to the RTDS system through the RTDS interface card. The interface card includes the GTAO analog output card and the GTFPI switch output card. The signal output by the GTAO card is a small signal, and then the amplifier is required to convert the small signal into the secondary analog input required by the stability control system. According to the different grid structures of the stability control system, RTDS modeling and the output of analog and switch quantities are required. Usually, when verifying the strategy of the stability control system, it involves verifying the stability control system strategy table of different sections, and each strategy table involves different stability control strategies executed for different faults. According to the stability control strategy setting of the same section, different power gears are generally set, and there will be different strategy measures for different power gears. In order to ensure the comprehensiveness of the strategy verification, it is necessary to adjust the system flow to each setting value and perform different fault simulations at the same gear. This will involve a large number of repetitive experiments with different flow sections and different fault simulation combinations.

[0004] The current AC / DC large power grid stability control system strategy verification system is as follows Figure 3As shown, firstly, RTDS modeling is performed according to the grid structure of the stability control system that needs strategy verification, and the analog quantity and switch quantity in the model are connected to the safety and stability control system through the GTAO card and the GTFPI card, and the output quantity of the safety and stability control system is connected to the recording device. According to the control strategy of the current stability control system, the safety and stability control system is switched to the operation mode that needs to be verified, and the detection section that needs strategy verification in this mode is manually adjusted to the corresponding power gear, and the fault simulation of the detection section is manually performed, and the action behavior of the stability control system is manually recorded, and its action behavior is judged to be correct.

[0005] The steps to verify the strategy are as follows:

[0006] 1. The grid structure of the stability control system needs to be verified when building the RTDS platform. The analog and switch quantities in the model are led out to the safety and stability control system, and the analog quantities in the RTDS model are adjusted to the secondary analog quantities required by the safety and stability control system through the voltage and current amplifier; the output quantity of the safety and stability control system is introduced into the recording device (fault recording device or connected to RTDS recording) to record and monitor whether the action behavior of the safety and stability control system is correct.

[0007] 2. After the stability control system strategy verification system is built according to step 1, set the fault point and various fault forms according to the control strategy that needs to be verified; adjust the detection section that needs to be verified according to the power level in the control strategy table of the stability control system. The specific steps are to adjust the unit output of the related detection section until the power level of the detection section is adjusted to the power level in the strategy table; when the set value is met, the stability control system will take relevant fault strategy actions; when the set value is not met, the stability control system will have relevant faults, and the strategy will not act reliably. The relevant faults here include various fault types, such as line double-circuit operation N-2 fault, line double-circuit operation N-1 fault and main transformer fault.

[0008] It can be seen from the above scheme that there are the following defects in the strategy verification of AC and DC large power grid stability control system:

[0009] In the AC / DC large power grid stability control system, there are many plants and stations involved, which involves multi-section stability control strategies. Since there are many repetitive tasks in verifying the stability control strategy, in order to ensure the integrity of the strategy verification and scan the fault forms in all scenarios, it will take a lot of manpower and time to complete the verification of the entire system.

[0010] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section. Summary of the invention

[0011] In order to solve the technical problems of time-consuming, labor-intensive and low efficiency in the current safety and stability control system strategy verification, the present invention proposes a safety and stability control system strategy verification method and device.

[0012] In order to achieve the above object, according to one aspect of the present invention, a safety and stability control system strategy verification method is provided, the method comprising:

[0013] Build a power grid structure in the RTDS platform system that needs to verify the safe and stable control system strategy;

[0014] Write the faults that need to be simulated in the RTDS platform system;

[0015] For each of the preset multiple target power values, the RTDS platform system automatically adjusts the parameters to make the unit output meet the allowable range of the target power value;

[0016] For each target power value, each fault that needs to be simulated is automatically executed when the unit output meets the allowable range of the target power value.

[0017] Optionally, for each of the preset multiple target power values, the RTDS platform system automatically adjusts parameters to make the unit output meet the allowable range of the target power value, specifically including:

[0018] If the sum of the unit output is less than the target power value, set the power adjustment coefficient lower line equal to the middle value, and then obtain the middle value again, and set the generator output parameter equal to the middle value obtained again, until the sum of the unit output meets the allowable range of the target power value, where the middle value is the average of the power adjustment coefficient lower line and the power adjustment coefficient upper line.

[0019] Optionally, for each of the preset multiple target power values, the RTDS platform system automatically adjusts parameters to make the unit output meet the allowable range of the target power value, specifically including:

[0020] If the sum of the unit output is greater than the target power value, set the upper line of the power adjustment coefficient equal to the middle value, and then obtain the middle value again, and set the generator output parameter equal to the middle value obtained again, until the sum of the unit output meets the allowable range of the target power value, where the middle value is the average of the lower line of the power adjustment coefficient and the upper line of the power adjustment coefficient.

[0021] Optionally, for each of the preset multiple target power values, the RTDS platform system automatically adjusts parameters to make the unit output meet the allowable range of the target power value, specifically including:

[0022] A batch file is set in the RTDS platform system, wherein the batch file is provided with the plurality of target power values, allowable errors, power adjustment coefficient lower limits, power adjustment coefficient upper limits and intermediate values;

[0023] Run the batch file. When the batch file is run, for each of the multiple target power values, adjust the power adjustment coefficient lower line, the power adjustment coefficient upper line and the intermediate value so that the unit output meets the allowable range of the target power value determined by the allowable error.

[0024] Optionally, for each target power value, executing each fault to be simulated in sequence when the unit output meets the allowable range of the target power value specifically includes:

[0025] After each execution of the fault that needs to be simulated is completed, the preset fault recovery time is waited for, and then the next fault that needs to be simulated is executed.

[0026] In order to achieve the above object, according to another aspect of the present invention, a safety and stability control system strategy verification device is provided, the device comprising:

[0027] The power grid model building submodule is used to build the power grid structure that needs to verify the safe and stable control system strategy in the RTDS platform system;

[0028] A fault writing submodule is used to write the faults to be simulated in the RTDS platform system;

[0029] The power flow adjustment submodule is respectively for each of the preset multiple target power values, and the RTDS platform system automatically adjusts the parameters to make the unit output meet the allowable range of the target power value;

[0030] The fault simulation submodule is used to automatically execute each fault that needs to be simulated for each target power value when the unit output meets the allowable range of the target power value.

[0031] Optionally, the power flow adjustment submodule specifically includes:

[0032] The first regulating unit is used to make the power adjustment coefficient lower line equal to the middle value if the unit output is less than the target power value, and then obtain the middle value again, and make the generator output parameter equal to the middle value obtained again until the unit output meets the allowable range of the target power value, wherein the middle value is the average of the power adjustment coefficient lower line and the power adjustment coefficient upper line.

[0033] Optionally, the power flow adjustment submodule specifically includes:

[0034] The second regulating unit is used to make the upper line of the power adjustment coefficient equal to the middle value if the unit output is greater than the target power value, and then obtain the middle value again, and make the generator output parameter equal to the middle value obtained again, until the unit output meets the allowable range of the target power value, wherein the middle value is the average of the lower line of the power adjustment coefficient and the upper line of the power adjustment coefficient.

[0035] Optionally, the power flow adjustment submodule specifically includes:

[0036] A batch file setting unit, used for setting a batch file in the RTDS platform system, wherein the batch file is provided with the plurality of target power values, allowable errors, power adjustment coefficient lower limits, power adjustment coefficient upper limits and intermediate values;

[0037] A batch file running unit is used to run the batch file. When the batch file is running, for each target power value among the multiple target power values, the power adjustment coefficient lower line, the power adjustment coefficient upper line and the intermediate value are adjusted to make the unit output meet the allowable range of the target power value determined by the allowable error.

[0038] Optionally, the fault simulation submodule is specifically configured to wait for a preset fault recovery time after executing each fault that needs to be simulated, and then execute the next fault that needs to be simulated.

[0039] In order to achieve the above-mentioned purpose, according to another aspect of the present invention, a computer device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned safety and stability control system strategy verification method when executing the computer program.

[0040] In order to achieve the above-mentioned purpose, according to another aspect of the present invention, a computer-readable storage medium is further provided, on which a computer program / instruction is stored, and when the computer program / instruction is executed by a processor, the steps of the above-mentioned safety and stability control system strategy verification method are implemented.

[0041] In order to achieve the above object, according to another aspect of the present invention, a computer program product is further provided, including a computer program / instruction, which implements the steps of the above safety and stability control system strategy verification method when executed by a processor.

[0042] The beneficial effects of the present invention are:

[0043] The present invention builds a power grid structure that needs to verify the strategy of a safe and stable control system in the RTDS platform system, and writes the faults that need to be simulated in the RTDS platform system, and then for each target power value in the preset multiple target power values, the RTDS platform system automatically adjusts the parameters to make the unit output and meet the allowable range of the target power value, and automatically executes each of the faults that need to be simulated when the unit output and meet the allowable range of the target power value. The scheme of the present invention can automatically adjust the target power and perform automatic fault simulation, which improves the efficiency of the strategy verification of the safe and stable control system, and solves the time-consuming, labor-intensive and inefficient problems caused by the need to manually adjust to the corresponding power gear and manually perform fault simulation in the current strategy verification of the safe and stable control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0045] Figure 1 is a first flow chart of a strategy verification method for a safety and stability control system according to an embodiment of the present invention;

[0046] Figure 2 is a second flow chart of a strategy verification method for a safety and stability control system according to an embodiment of the present invention;

[0047] Figure 3 It is a schematic diagram of the strategy verification system of the existing AC / DC large power grid stability control system;

[0048] Figure 4 It is a schematic diagram of the automatic verification architecture of the AC / DC large power grid stabilization control system strategy of the present invention;

[0049] Figure 5 It is a flow chart of RTDS platform system simulation according to an embodiment of the present invention;

[0050] Figure 6 This is a first structural block diagram of a strategy verification device for a safety and stability control system according to an embodiment of the present invention;

[0051] Figure 7 It is a second structural block diagram of a strategy verification device for a safety and stability control system according to an embodiment of the present invention;

[0052] Figure 8 It is a schematic diagram of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0054] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0055] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatus.

[0056] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0057] It should be noted that the acquisition, storage, use, and processing of data in the technical solution of this application are in compliance with the relevant provisions of national laws and regulations.

[0058] The architecture of the automatic strategy verification method of the AC / DC large power grid stabilization control system based on the real-time digital simulation platform RTDS is as follows: Figure 4 As shown, the automatic strategy verification module of the stability control system is written into the batch file of RTDS. The automatic strategy verification module of the stability control system is divided into three submodules: power flow adjustment submodule, fault simulation submodule and event recording submodule. The three submodules jointly complete the scanning verification of the strategy table.

[0059] Figure 1 is a first flow chart of a strategy verification method for a safety and stability control system according to an embodiment of the present invention. Figure 1 As shown, in one embodiment of the present invention, the safety and stability control system strategy verification method of the present invention includes steps S101 to S104.

[0060] Step S101, constructing a power grid structure that needs to verify the safe and stable control system strategy in the RTDS platform system.

[0061] Step S102: writing the fault to be simulated into the RTDS platform system.

[0062] In one embodiment of the present invention, the present invention can use draft to write all the faults that need to be simulated in the RTDS platform system.

[0063] The faults of the present invention include various fault types, such as line double-circuit operation N-2 fault, line double-circuit operation N-1 fault and main transformer fault.

[0064] Step S103: for each of the preset multiple target power values, the RTDS platform system automatically adjusts parameters to make the unit output meet the allowable range of the target power value.

[0065] In one embodiment of the present invention, the multiple target power values ​​are specifically all target power values ​​in the stable control system strategy table.

[0066] In one embodiment of the present invention, the present invention specifically adjusts the generator output parameters to ensure that the unit output meets the allowable range of the target power value.

[0067] In one embodiment of the present invention, the present invention pre-sets a parameter allowable error ERROR, and then the allowable range of the target power value can be determined according to the target power value and the allowable error ERROR.

[0068] Step S104, for each target power value, each fault that needs to be simulated is automatically executed when the unit output meets the allowable range of the target power value.

[0069] In the present invention, for each target power value, each fault that needs to be simulated is triggered to be automatically executed when the unit output meets the allowable range of the target power value.

[0070] In one embodiment of the present invention, the present invention can automatically execute each of the faults that need to be simulated in sequence.

[0071] In one embodiment of the present invention, the present invention pre-sets parameters such as the target power value P of the detection section, the intermediate value MID, the allowable error ERROR, the power adjustment coefficient lower line PsetL, and the power adjustment coefficient upper line PsetH in the RTDS platform system. The intermediate value MID is the average value of the power adjustment coefficient lower line PsetL and the power adjustment coefficient upper line PsetH.

[0072] In one embodiment of the present invention, the above step S103 is for each of the preset multiple target power values, and the RTDS platform system automatically adjusts the parameters to make the unit output meet the allowable range of the target power value, specifically including:

[0073] If the sum of the unit output is less than the target power value, set the power adjustment coefficient lower line equal to the middle value, and then obtain the middle value again, and set the generator output parameter equal to the middle value obtained again, until the sum of the unit output meets the allowable range of the target power value, where the middle value is the average of the power adjustment coefficient lower line and the power adjustment coefficient upper line.

[0074] In one embodiment of the present invention, the above step S103 is for each of the preset multiple target power values, and the RTDS platform system automatically adjusts the parameters to make the unit output meet the allowable range of the target power value, specifically including:

[0075] If the sum of the unit output is greater than the target power value, set the upper line of the power adjustment coefficient equal to the middle value, and then obtain the middle value again, and set the generator output parameter equal to the middle value obtained again, until the sum of the unit output meets the allowable range of the target power value, where the middle value is the average of the lower line of the power adjustment coefficient and the upper line of the power adjustment coefficient.

[0076] Figure 2 is a second flow chart of the strategy verification method of the safety and stability control system according to an embodiment of the present invention, such as Figure 2 As shown, in one embodiment of the present invention, the above-mentioned step S103 is respectively for each target power value in the preset multiple target power values, and the RTDS platform system automatically adjusts the parameters to make the unit output and meet the allowable range of the target power value, specifically including step S201 and step S202.

[0077] Step S201, setting a batch file in the RTDS platform system, wherein the batch file is provided with the plurality of target power values, allowable errors, power adjustment coefficient lower limits, power adjustment coefficient upper limits and intermediate values.

[0078] Step S202, running the batch file. When the batch file is running, for each of the multiple target power values, by adjusting the power adjustment coefficient lower line, the power adjustment coefficient upper line and the intermediate value, the unit output meets the allowable range of the target power value determined by the allowable error.

[0079] In one embodiment of the present invention, the batch file adjusts the power adjustment coefficient lower line, the power adjustment coefficient upper line and the intermediate value during operation so that the unit output meets the allowable range of the target power value determined by the allowable error, specifically including:

[0080] If the unit output is less than the target power value, the power adjustment coefficient lower line is set equal to the middle value, and then the middle value is calculated again, and the generator output parameter is set equal to the middle value calculated again, until the unit output meets the allowable range of the target power value, where the middle value is the average of the power adjustment coefficient lower line and the power adjustment coefficient upper line;

[0081] If the sum of the unit output is greater than the target power value, set the upper line of the power adjustment coefficient equal to the middle value, and then obtain the middle value again, and set the generator output parameter equal to the middle value obtained again, until the sum of the unit output meets the allowable range of the target power value, where the middle value is the average of the lower line of the power adjustment coefficient and the upper line of the power adjustment coefficient.

[0082] In one embodiment of the present invention, the above step S104, for each target power value, sequentially executes each fault to be simulated when the unit output meets the allowable range of the target power value, specifically including:

[0083] After each execution of the fault that needs to be simulated is completed, the preset fault recovery time is waited for, and then the next fault that needs to be simulated is executed.

[0084] Figure 5 : is a flow chart of RTDS platform system simulation according to an embodiment of the present invention, such as Figure 5 As shown, the RTDS platform system simulation process of the present invention includes the following steps:

[0085] (1) In the batch file of the RTDS platform system, use the power flow adjustment submodule to set the target power P of the detection section, the unit output and SUMM, the intermediate value MID, the allowable error ERROR, the power adjustment coefficient lower limit PsetL, and the power adjustment coefficient upper limit PsetH; write the values ​​of the above parameters in the batch file;

[0086] (2) Obtaining an intermediate value MID, which is half the sum of the power adjustment coefficient lower line PsetL and the power adjustment coefficient upper line PsetH;

[0087] (3) Use the while loop statement to obtain the target power value P through binary search. First, when the unit output is less than the target power value P, the while statement loop is entered; second, when the unit output is greater than the target power value P, the while statement loop is entered, which can be within the allowable error ERROR range;

[0088] (4) Use the if conditional judgment statement. When the unit output and SUMM are less than the target power value P, set the power adjustment coefficient lower line PsetL equal to the middle value MID (equivalent to raising the power adjustment coefficient lower line PsetL), obtain the middle value MID again (equivalent to raising MID), and set the generator output parameter equal to the middle value MID until the unit output and SUMM meet the allowable range of the target power value P;

[0089] Use the if conditional statement to determine that when the unit output and SUMM are greater than the target power value P, set the upper limit of the power adjustment coefficient PsetH to be equal to the middle value MID (equivalent to lowering the upper limit of the power adjustment coefficient PsetH), obtain the middle value MID again (equivalent to lowering MID), and set the generator output parameter to be equal to the middle value MID until the unit output and SUMM meet the allowable range of the target power value P;

[0090] (5) Set up faults. Use Draft to write all the faults that need to be simulated. In the batch file, after executing processes (1)-(4), trigger the faults that need to be verified.

[0091] (6) Use the fprintf function to print the output results;

[0092] (7) After the fault duration, the fault is restored;

[0093] (8) Use the For loop statement to execute the next target power value P and perform (1)-(7) until all target power values ​​in the stabilization control system strategy table are scanned.

[0094] It can be seen from the above embodiments that the scheme of the present invention can automatically adjust the target power and perform automatic fault simulation, thereby improving the efficiency of the safety and stability control system strategy verification, and solving the problem of time-consuming, labor-intensive and inefficient manual adjustment to the corresponding power gear and manual fault simulation in the current safety and stability control system strategy verification.

[0095] Some terms in the present invention are explained below:

[0096] Safety and stability control system: A system consisting of safety and stability control systems of two or more power plants connected through communication equipment to achieve stable control of regional or larger power systems;

[0097] Section flow: the power of important transmission lines, transformers or combinations of transmission lines and transformers in the power system corresponding to the stabilization strategy, where the section composition is the equipment set of transmission lines and (or) transformers and their combinations that constitute the transmission section; the power direction is the active power direction of the primary equipment related to the section; the power level is the power level setting value of the section;

[0098] Real Time Digital Simulation: RTDS. Using high-performance processors and dedicated model libraries, a system is built that can output the operating status of simulation models in real time.

[0099] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0100] Based on the same inventive concept, an embodiment of the present invention also provides a safety and stability control system strategy verification device, which can be used to implement the safety and stability control system strategy verification method described in the above embodiment, as described in the following embodiment. Since the principle of solving the problem by the safety and stability control system strategy verification device is similar to that of the safety and stability control system strategy verification method, the embodiment of the safety and stability control system strategy verification device can refer to the embodiment of the safety and stability control system strategy verification method, and the repeated parts will not be repeated. As used below, the term "unit" or "module" can be a combination of software and / or hardware that implements predetermined functions. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0101] Figure 6 is a first structural block diagram of a strategy verification device for a safety and stability control system according to an embodiment of the present invention, such as Figure 6 As shown, in one embodiment of the present invention, the safety and stability control system strategy verification device of the present invention includes:

[0102] The power grid model building submodule 1 is used to build the power grid structure that needs to verify the safe and stable control system strategy in the RTDS platform system;

[0103] The fault writing submodule 2 is used to write the faults to be simulated in the RTDS platform system;

[0104] The power flow adjustment submodule 3, for each of the preset multiple target power values, the RTDS platform system automatically adjusts the parameters to make the unit output meet the allowable range of the target power value;

[0105] The fault simulation submodule 4 is used to automatically execute each fault that needs to be simulated for each target power value when the unit output meets the allowable range of the target power value.

[0106] In one embodiment of the present invention, the power flow adjustment submodule specifically includes:

[0107] The first regulating unit is used to make the power adjustment coefficient lower line equal to the middle value if the unit output is less than the target power value, and then obtain the middle value again, and make the generator output parameter equal to the middle value obtained again until the unit output meets the allowable range of the target power value, wherein the middle value is the average of the power adjustment coefficient lower line and the power adjustment coefficient upper line.

[0108] In one embodiment of the present invention, the power flow adjustment submodule specifically includes:

[0109] The second regulating unit is used to make the upper line of the power adjustment coefficient equal to the middle value if the unit output is greater than the target power value, and then obtain the middle value again, and make the generator output parameter equal to the middle value obtained again, until the unit output meets the allowable range of the target power value, wherein the middle value is the average of the lower line of the power adjustment coefficient and the upper line of the power adjustment coefficient.

[0110] Figure 7 is a second structural block diagram of a strategy verification device for a safety and stability control system according to an embodiment of the present invention, such as Figure 7 As shown, in one embodiment of the present invention, the power flow adjustment submodule 3 specifically includes:

[0111] A batch file setting unit 301 is used to set a batch file in the RTDS platform system, wherein the batch file is provided with the plurality of target power values, allowable errors, power adjustment coefficient lower limits, power adjustment coefficient upper limits and intermediate values;

[0112] The batch file running unit 302 is used to run the batch file. When the batch file is running, for each target power value among the multiple target power values, the power adjustment coefficient lower line, the power adjustment coefficient upper line and the intermediate value are adjusted to make the unit output meet the allowable range of the target power value determined by the allowable error.

[0113] In one embodiment of the present invention, the fault simulation submodule is specifically configured to execute the next fault that needs to be simulated after waiting for a preset fault recovery time after executing each fault that needs to be simulated.

[0114] In order to achieve the above object, according to another aspect of the present application, a computer device is also provided. Figure 8 As shown, the computer device includes a memory, a processor, a communication interface and a communication bus. A computer program that can be executed on the processor is stored in the memory. When the processor executes the computer program, the steps in the above-mentioned embodiment method are implemented.

[0115] The processor may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0116] The memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer executable programs and units, such as the corresponding program units in the above method embodiments of the present invention. The processor executes various functional applications of the processor and works data processing by running the non-transitory software programs, instructions and modules stored in the memory, that is, implementing the method in the above method embodiments.

[0117] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created by the processor, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0118] The one or more units are stored in the memory, and when executed by the processor, the method in the above embodiment is performed.

[0119] The specific details of the above-mentioned computer device can be understood by referring to the corresponding related descriptions and effects in the above-mentioned embodiments, and will not be repeated here.

[0120] In order to achieve the above purpose, according to another aspect of the present application, a computer-readable storage medium is also provided, wherein the computer-readable storage medium stores a computer program, and the computer program implements the steps in the above-mentioned safety and stability control system strategy verification method when executed in a computer processor. Those skilled in the art can understand that the implementation of all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and the program can include the processes of the embodiments of the above-mentioned methods when executed. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (Flash Memory), a hard disk (Hard Disk Drive, abbreviated as: HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0121] In order to achieve the above-mentioned purpose, according to another aspect of the present application, a computer program product is also provided, including a computer program / instruction, which implements the steps of the above-mentioned safety and stability control system strategy verification method when executed by a processor.

[0122] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0123] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety and stability control system strategy verification method, characterized in that: include: Build a power grid structure in the RTDS platform system that needs to verify the safe and stable control system strategy; Write the faults that need to be simulated in the RTDS platform system; For each of the preset multiple target power values, the RTDS platform system automatically adjusts the parameters to make the unit output meet the allowable range of the target power value, specifically by adjusting the generator output parameters to make the unit output meet the allowable range of the target power value; For each target power value, each fault to be simulated is automatically executed when the unit output meets the allowable range of the target power value; For each of the preset multiple target power values, the RTDS platform system automatically adjusts the parameters to make the unit output meet the allowable range of the target power value, specifically including: A batch file is set in the RTDS platform system, wherein the batch file is provided with the plurality of target power values, allowable errors, power adjustment coefficient lower limits, power adjustment coefficient upper limits and intermediate values; Running the batch processing file, wherein when the batch processing file is running, for each of the multiple target power values, by adjusting the power adjustment coefficient lower line, the power adjustment coefficient upper line and the intermediate value, the unit output meets the allowable range of the target power value determined by the allowable error; The batch file adjusts the power adjustment coefficient lower line, the power adjustment coefficient upper line and the intermediate value during operation so that the unit output meets the allowable range of the target power value determined by the allowable error, specifically including: If the unit output is less than the target power value, the power adjustment coefficient lower line is set equal to the middle value, and then the middle value is calculated again, and the generator output parameter is set equal to the middle value calculated again, until the unit output meets the allowable range of the target power value, where the middle value is the average of the power adjustment coefficient lower line and the power adjustment coefficient upper line; If the unit output is greater than the target power value, the upper limit of the power adjustment coefficient is set equal to the middle value, and then the middle value is obtained again, and the generator output parameter is set equal to the middle value obtained again, until the unit output meets the allowable range of the target power value.

2. The safety and stability control system strategy verification method according to claim 1 is characterized in that: For each target power value, each fault to be simulated is executed in sequence when the unit output meets the allowable range of the target power value, specifically including: After each execution of the fault that needs to be simulated is completed, the preset fault recovery time is waited for, and then the next fault that needs to be simulated is executed.

3. A safety and stability control system strategy verification device, characterized in that: include: The power grid model building submodule is used to build the power grid structure that needs to verify the safe and stable control system strategy in the RTDS platform system; A fault writing submodule is used to write the faults to be simulated in the RTDS platform system; The power flow adjustment submodule, for each of the preset multiple target power values, the RTDS platform system automatically adjusts the parameters to make the unit output meet the allowable range of the target power value, specifically by adjusting the generator output parameters to make the unit output meet the allowable range of the target power value; A fault simulation submodule, for automatically executing each fault to be simulated for each target power value when the unit output meets the allowable range of the target power value; The power flow adjustment submodule specifically includes: A batch file setting unit, used for setting a batch file in the RTDS platform system, wherein the batch file is provided with the plurality of target power values, allowable errors, power adjustment coefficient lower limits, power adjustment coefficient upper limits and intermediate values; a batch file running unit, used for running the batch file, wherein when the batch file is run, for each of the multiple target power values, the power adjustment coefficient lower line, the power adjustment coefficient upper line and the intermediate value are adjusted so that the unit output meets the allowable range of the target power value determined by the allowable error; The first regulating unit is used for, if the unit output is less than the target power value, setting the power adjustment coefficient lower line equal to the middle value, and then obtaining the middle value again, and setting the generator output parameter equal to the middle value obtained again, until the unit output meets the allowable range of the target power value, wherein the middle value is the average value of the power adjustment coefficient lower line and the power adjustment coefficient upper line; The second regulating unit is used to make the upper limit of the power adjustment coefficient equal to the intermediate value if the unit output is greater than the target power value, and then obtain the intermediate value again, and make the generator output parameter equal to the intermediate value obtained again until the unit output meets the allowable range of the target power value.

4. The safety and stability control system strategy verification device according to claim 3, characterized in that: The fault simulation submodule is specifically used to execute the next fault that needs to be simulated after waiting for a preset fault recovery time after executing each fault that needs to be simulated.

5. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 2 are implemented.

6. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 2 are implemented.

7. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the method according to any one of claims 1 to 2 are implemented.

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