Online checking method and system for power grid stability control system and electronic equipment

Abstract

The invention discloses an on-line checking method for a power grid stability control system. The method comprises the following steps: dividing a stability control device program bearing a power grid stability control strategy into a function program and a test program which are mutually independent; the function program and the test program sense the same running state information of the power grid and the device in real time; the stability control information management master station sets and triggers a test state command, and presets a fault simulation instruction to the test program; the test program performs stable control strategy logic deduction based on the current real-time operation state and a preset fault of the received stable control information management master station; and the stability control information management main station verifies the correctness of the action result of the stability control system, and the stability control analysis main station verifies the effectiveness of the preset stability control strategy. In combination with the real-time operation state of the power grid, control strategy logic deduction and adaptability checking are carried out for the preset fault, and the correctness and effectiveness of the action result of the stable control system under the condition that the power grid has the actual fault are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power grids, and in particular to an online verification method, system and electronic equipment for a power grid stability control system. Background Art

[0002] With the continuous construction of new power systems, the operation mode of the power grid has become more complex and changeable, and the coupling of system instability characteristics has brought great challenges to the reliability of the safe and stable operation of the power grid. The stability control system generally cooperates with the stability control equipment in two or more substations to complete specific strategic functions. The rationality and correctness of the stability control system defense are prerequisites for ensuring the safe and stable operation of the power grid. The existing stability control system adopts the control mode of "offline decision-making, online matching". When a power grid fails, the stability control system quickly matches the control measures according to the current operation mode of the power grid and the offline strategy. Since the operation mode and expected faults considered in the calculation cannot be exhaustive, and the existing static test and RTDS test methods cannot realize the online verification of the stability control system based on the device function and the real-time operation status of the power grid, there is a risk of mismatch between the fault control strategy and the real-time operation mode. Therefore, it is urgent to explore new online verification methods for stability control systems to improve the correctness and effectiveness of the action results of the stability control system in the event of a power grid failure. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an online calibration method, system and electronic equipment for a power grid stability control system, which, in combination with the real-time operating status of the power grid, performs control strategy logic deduction and adaptability calibration for preset faults, thereby improving the correctness and effectiveness of the power grid stability control system in the event of an actual fault.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] According to one aspect of the present invention, there is provided a method for online verification of a power grid stability control system, which is characterized by comprising the following steps:

[0006] Step S1: dividing the stability control device program carrying the power grid stability control strategy into independent functional programs and test programs;

[0007] Step S2: the functional program and the test program sense the same power grid and the device's own operating status information in real time;

[0008] Step S3: The main station for stabilizing the control information management sets and can trigger the test state command and preset the fault simulation instruction to the test program;

[0009] Step S4: the stability control device test program performs a stability control strategy logic deduction based on the current real-time operating state and the preset fault received from the stability control information management master station;

[0010] Step S5: The stability control information management master station verifies the correctness of the stability control system action result, and the stability control analysis master station verifies the effectiveness of the preset stability control strategy.

[0011] Furthermore, the functional program in step S1 refers to a program for implementing an actual power grid stability control strategy, and the test program refers to a program for online simulation of the execution of the stability control strategy; the functional program and the test program are independent of each other and do not affect each other, and the programs of the stability control strategy parts of the two are completely consistent.

[0012] Furthermore, the functional program and the test program in step S2 perceive the same power grid and the device's own operating status information in real time. Specifically, the functional program and the test program simultaneously collect voltage and current analog information, circuit breaker position, device function pressure plate and other switch quantity information of the same line, main transformer or unit, and simultaneously obtain the inter-station channel status information of the stabilization control devices at different sites and all constant value information including strategy logic constants, that is, the power grid and the device's own operating status information perceived by the two during operation are exactly the same.

[0013] Furthermore, the step S3 is specifically as follows:

[0014] The test status command and preset fault simulation instruction triggered by the stability control information management master station are only sent to the stability control device test program, not to the functional program;

[0015] The functional program is not configured with an interface for receiving the test status command of the stability control information management master station and the preset fault simulation command, and is not affected by the above commands;

[0016] The test program is configured with an interface for receiving a test status command and a preset fault simulation instruction from a stable control information management master station, and the preset fault simulation instruction is considered valid only when a test status command is received.

[0017] Furthermore, the step S4 is specifically as follows:

[0018] The stability control device test program can only perform the stability control strategy logic deduction when the device is in normal operation and not started; if a power grid disturbance occurs during the test program deduction and causes the device to start, the deduction process will be stopped immediately;

[0019] The results of the strategy logic action of the stability control device test program include the local action result and the inter-station test command sending result. The inter-station test command sending still uses the inter-station communication channel of the original stability control device, but the test command message header is special to distinguish it from the normal message header of the stability control system. In the test state, the local action and the adjacent site only display the action message after receiving the inter-station test command, and do not actually trip the circuit breaker at the outlet, which does not affect the normal operation of the actual system;

[0020] The stability control device returns the action results of the test program to the stability control information management master station.

[0021] Furthermore, in step S5, the stability control information management master station verifies the correctness of the action result of the stability control system, specifically:

[0022] The stability control information management master station receives the action results of the stability control device test program, integrates the current operation status of the power grid and the preset faults, and verifies the correctness of the action results of the stability control system.

[0023] Furthermore, in step S5, the stability control analysis master station verifies the validity of the preset stability control strategy, specifically:

[0024] The stability control analysis master station receives the stability control information management. The stability control strategy sent by the master station involves the operating status of power grid components, preset faults, and the action results of the stability control device test program of each site. It receives the real-time operating status of other power grid components or sections associated with the stability control strategy in the dispatching information management system, and comprehensively verifies the stability of the power grid after the stability control system cuts off the relevant components under the current operating status and preset fault conditions, thereby verifying the effectiveness of the preset stability control strategy.

[0025] According to another aspect of the present invention, there is provided an online verification system for a power grid stability control system, characterized in that it comprises a stability control analysis master station, a stability control information management master station and a stability control device;

[0026] The stability control analysis master station is used to obtain operation information from the dispatch information management system and the stability control information management master station to verify the effectiveness of the preset strategy of the stability control system;

[0027] The stability control information management master station is used to set and trigger the test state command and the preset fault simulation instruction to the stability control device, and verify the correctness of the action result of the stability control system;

[0028] The program of the stability control device used to carry the power grid stability control strategy is divided into independent functional programs and test programs, which sense the operating status information of the power grid and the device itself in real time; the test program receives the test status command and preset fault simulation instructions sent by the stability control information management master station, and performs stability control strategy logic deduction based on the current real-time operating status and the preset faults received from the stability control information management master station.

[0029] Furthermore, the stability control analysis master station is used to obtain operation information from the dispatching information management system and the stability control information management master station, specifically: obtaining the power grid operation status from the dispatching information management system and obtaining the power grid operation status, preset faults and stability control system action result information from the stability control information management master station.

[0030] According to another aspect of the present invention, there is provided an electronic device, comprising:

[0031] A processor; a memory and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, any one of the above methods is implemented.

[0032] Beneficial effects of the invention: The invention discloses an online verification method and device for a power grid stability control system, which, combined with the real-time operation status of the power grid, performs control strategy logic deduction and adaptability verification for preset faults, thereby improving the correctness and effectiveness of the action results of the power grid stability control system in the event of an actual fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic flow chart of an online verification method for a power grid stability control system provided by an exemplary embodiment of the present invention;

[0034] Figure 2 A functional schematic diagram of a stability control device provided for an exemplary embodiment of the present invention;

[0035] Figure 3 An architecture diagram of an online verification system for a power grid stability control system provided by an exemplary embodiment of the present invention;

[0036] Figure 4 A structural diagram of an electronic device provided for an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below based on the accompanying drawings and embodiments. It should be understood that the specific implementation described here is only used to explain the present invention and does not limit the present invention.

[0038] Figure 1A schematic flow chart of an online verification method for a power grid stability control system provided by an exemplary embodiment of the present invention is shown, and the method comprises the following steps:

[0039] Step S1: dividing the stability control device program carrying the power grid stability control strategy into independent functional programs and test programs;

[0040] Step S2: the functional program and the test program sense the same power grid and the device's own operating status information in real time;

[0041] Step S3: The main station for stabilizing the control information management sets and can trigger the test state command and preset the fault simulation instruction to the test program;

[0042] Step S4: the stability control device test program performs a stability control strategy logic deduction based on the current real-time operating state and the preset fault received from the stability control information management master station;

[0043] Step S5: The stability control information management master station verifies the correctness of the stability control system action result, and the stability control analysis master station verifies the effectiveness of the preset stability control strategy.

[0044] According to some preferred embodiments of the present invention, the functional program in step S1 refers to a program for implementing an actual power grid stability control strategy, and in the actual process of executing the stability control strategy, remote plant control commands are issued and local exits are jumped; the test program refers to a program for online simulation of the execution of the stability control strategy, and in the process of simulating the execution of the stability control strategy, remote plant test commands and local test action messages are issued; the functional program and the test program are independent of each other and do not affect each other, and the programs of the stability control strategy parts of the two are completely consistent.

[0045] According to some preferred embodiments of the present invention, the functional program and the test program in step S2 perceive the same power grid and the device's own operating status information in real time, specifically: the functional program and the test program simultaneously collect the voltage and current analog information, circuit breaker position, device function pressure plate and other switch quantity information of the same line, main transformer or unit, and simultaneously obtain the inter-station channel status information of the stabilization control devices at different sites and all constant value information including the strategy logic constants, that is, the power grid and the device's own operating status information perceived by the functional program and the test program during operation are exactly the same.

[0046] Figure 2 A functional diagram of a stability control device provided for an exemplary embodiment of the present invention.

[0047] According to some preferred embodiments of the present invention, step S3 is specifically:

[0048] The test status command and preset fault simulation instruction triggered by the stability control information management master station are only sent to the stability control device test program, not to the functional program;

[0049] The functional program is not configured with an interface for receiving the test status command of the stability control information management master station and the preset fault simulation command, and is not affected by the above commands;

[0050] The test program is configured with an interface for receiving a test status command and a preset fault simulation instruction from a stable control information management master station, and the preset fault simulation instruction is considered valid only when a test status command is received.

[0051] According to some preferred embodiments of the present invention, step S4 is specifically:

[0052] The stability control device test program can only perform the stability control strategy logic deduction when the device is in normal operation and not started; if a power grid disturbance occurs during the test program deduction and causes the device to start, the deduction process will be stopped immediately;

[0053] The results of the strategy logic action of the stability control device test program include the local action result and the inter-station test command sending result. The inter-station test command sending still uses the inter-station communication channel of the original stability control device, but the test command message header is special to distinguish it from the normal message header of the stability control system. In the test state, the local action and the adjacent site only display the action message after receiving the inter-station test command, and do not actually trip the circuit breaker at the outlet, which does not affect the normal operation of the actual system;

[0054] The stability control device returns the action results of the test program to the stability control information management master station.

[0055] According to some preferred embodiments of the present invention, in step S5, the stability control information management master station verifies the correctness of the action result of the stability control system, specifically:

[0056] The stability control information management master station receives the action results of the stability control device test program, integrates the current operation status of the power grid and the preset faults, and verifies the correctness of the action results of the stability control system;

[0057] According to some preferred embodiments of the present invention, the stability control analysis master station verifies the validity of the preset stability control strategy in step S5, specifically:

[0058] The stability control analysis master station receives the stability control information management. The stability control strategy sent by the master station involves the operating status of power grid components, preset faults, and the action results of the stability control device test program of each site. It receives the real-time operating status of other power grid components or sections associated with the stability control strategy in the dispatching information management system, and comprehensively verifies the stability of the power grid after the stability control system cuts off the relevant components under the current operating status and preset fault conditions, thereby verifying the effectiveness of the preset stability control strategy.

[0059] Figure 3 The present invention provides an exemplary embodiment of an online verification system for a power grid stability control system, including a stability control analysis master station, a stability control information management master station and a stability control device.

[0060] The stability control analysis master station is used to obtain operation information from the dispatch information management system and the stability control information management master station to verify the effectiveness of the preset strategy of the stability control system;

[0061] The stability control information management master station is used to set and trigger the test state command and the preset fault simulation instruction to the stability control device, and verify the correctness of the action result of the stability control system;

[0062] The program of the stability control device used to carry the grid stability control strategy is divided into independent functional programs and test programs, which sense the operation status information of the grid and the device itself in real time; the test program receives the test status command and preset fault simulation instruction sent by the stability control information management master station, and performs the logic deduction of the stability control strategy based on the current real-time operation status and the preset fault received from the stability control information management master station. One or more stability control devices can be configured according to the actual needs of the grid stability control system to complete specific stability control strategy functions.

[0063] According to some preferred embodiments of the present invention, the stability control analysis master station is used to obtain operation information from the dispatching information management system and the stability control information management master station, specifically: obtaining the power grid operation status from the dispatching information management system and obtaining the power grid operation status, preset faults and stability control system action result information from the stability control information management master station.

[0064] by Figure 3 The A station stabilization control device and the B station stabilization control device included in the example embodiments shown illustrate the technical solution of the present invention.

[0065] Taking the stability control device of station A as an example, the online verification process is as follows:

[0066] The stability control information management master station triggers the test status command of the stability control device of station A and the preset fault simulation command;

[0067] Only the test program of the stability control device of station A receives the test status command and the preset fault simulation instruction. The functional program will not receive the relevant instructions because the relevant interface is not configured. After receiving the relevant instructions, the test program of the stability control device of station A needs to determine that the device is in normal operation and has not been started, and only when the test status command is received, the preset fault simulation instruction is considered valid, and it is started and enters the control strategy logic deduction. When the test program determines that the operating status, fault components, etc. meet the relevant strategy logic conditions, it triggers the local action and the inter-station test command transmission. Among them, after the local action, only the action message is displayed, and the actual action outlet circuit breaker is not tripped; the inter-station test command sent to station B still borrows the original inter-station communication channel of the stability control device of station A and station B, but the test command message header is special, which is distinguished from the normal message header of the stability control system. After receiving the test command message of the stability control device of station A, the stability control device of station B executes the relevant command, but the result only displays the action message, and the actual action outlet circuit breaker is not tripped. If the stability control device test program of station A starts up due to a grid fault or disturbance during the control strategy deduction process, the strategy deduction process will be stopped immediately and the relevant control strategy will be implemented through the functional program. The entire control strategy deduction process of the test program does not affect the execution of the functional program and the normal operation of the actual power grid.

[0068] The stability control information management master station receives the action results of the test status of the stability control devices of stations A and B, comprehensively considers the current operation status of the power grid and the preset faults, and determines whether the action results of the stability control devices of stations A and B are consistent with the expected action results, thereby verifying the correctness of the action results of the stability control system.

[0069] The stability control analysis master station receives the stability control information management. The stability control strategy sent by the master station involves the operating status of power grid components, preset faults, and the action results of the test status of the stability control devices of stations A and B. At the same time, it receives the real-time operating status of other power grid components or sections associated with the stability control strategy in the dispatching information management system, and comprehensively verifies the stability of the power grid after the stability control system cuts off the relevant units, loads or interconnection lines and other components under the current operating status and preset fault conditions, thereby verifying the effectiveness of the preset stability control strategy.

[0070] Figure 4 A structural diagram of an electronic device provided by the present invention is shown, which includes a processor and a memory, wherein the memory stores computer instructions. When the computer instructions are executed by the processor, the processor executes the computer instructions to implement the method and detailed scheme described above.

[0071] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A method for online verification of a power grid stability control system, characterized in that The following steps are involved: Step S1: dividing the stability control device program carrying the power grid stability control strategy into independent functional programs and test programs; Step S2: the functional program and the test program sense the same power grid and the device's own operating status information in real time; Step S3: the stability control information management master station sets and triggers a test state command and presets a fault simulation instruction to the test program; Step S4: the test program performs a logic deduction of a stable control strategy based on the current real-time operating state and the preset fault of the receiving stable control information management master station; Step S5: The stability control information management master station verifies the correctness of the stability control system action result, and the stability control analysis master station verifies the effectiveness of the preset stability control strategy.

2. The online verification method of a power grid stability control system according to claim 1, characterized in that: The functional program in step S1 refers to a program for implementing the actual power grid stability control strategy, and the test program refers to a program for online simulation of the execution of the stability control strategy; the functional program and the test program are independent of each other and do not affect each other, and the programs of the stability control strategy parts of the two are completely consistent.

3. The online verification method of a power grid stability control system according to claim 1 is characterized in that: The functional program and the test program in step S2 perceive the same power grid and the device's own operating status information in real time. Specifically, the functional program and the test program simultaneously collect the voltage and current analog information, circuit breaker position, device function pressure plate and other switch quantity information of the same line, main transformer or unit, and simultaneously obtain the inter-station channel status information of the stabilization control devices at different sites and all constant value information including the strategy logic constants, that is, the power grid and the device's own operating status information perceived by the two during operation are exactly the same.

4. The online verification method of a power grid stability control system according to claim 1 is characterized in that: The step S3 is specifically as follows: The test status command and preset fault simulation instruction triggered by the stability control information management master station are only sent to the stability control device test program, not to the functional program; The functional program is not configured with an interface for receiving the test status command of the stability control information management master station and the preset fault simulation command, and is not affected by the above commands; The test program is configured with an interface for receiving a test status command and a preset fault simulation instruction from a stable control information management master station, and the preset fault simulation instruction is considered valid only when a test status command is received.

5. The online verification method of a power grid stability control system according to claim 1 is characterized in that: The step S4 is specifically as follows: The stability control device test program can only perform the stability control strategy logic deduction when the device is in normal operation and not started; if a power grid disturbance occurs during the test program logic deduction, causing the device to start, the deduction process will be stopped immediately; The results of the strategy logic action of the stability control device test program include the local action result and the inter-station test command sending result. The inter-station test command sending still uses the inter-station communication channel of the original stability control device, but the test command message header is special to distinguish it from the normal message header of the stability control system; in the test state, the local action and the adjacent site only display the action message after receiving the inter-station test command, and do not actually trip the circuit breaker at the outlet, which does not affect the normal operation of the actual system; The stability control device returns the action results of the test program to the stability control information management master station.

6. The online verification method of a power grid stability control system according to claim 1, characterized in that: In step S5, the stability control information management master station verifies the correctness of the action result of the stability control system, specifically: The stability control information management master station receives the action results of the stability control device test program, integrates the current operation status of the power grid and the preset faults, and verifies the correctness of the action results of the stability control system.

7. The online verification method of a power grid stability control system according to claim 1, characterized in that: In step S5, the stability control analysis master station verifies the validity of the preset stability control strategy, specifically: The stability control analysis master station receives the stability control information management. The stability control strategy sent by the master station involves the operating status of power grid components, preset faults, and the action results of the stability control device test program of each site. It receives the real-time operating status of other power grid components or sections associated with the stability control strategy in the dispatching information management system, and comprehensively verifies the stability of the power grid after the stability control system cuts off the relevant components under the current operating status and preset fault conditions, thereby verifying the effectiveness of the preset stability control strategy.

8. An online verification system for a power grid stability control system, characterized in that: Including stability control analysis main station, stability control information management main station and stability control device, The stability control analysis master station is used to obtain operation information from the dispatch information management system and the stability control information management master station to verify the effectiveness of the preset strategy of the stability control system; The stability control information management master station is used to set and trigger the test state command and the preset fault simulation instruction to the stability control device, and verify the correctness of the action result of the stability control system; The program of the stability control device used to carry the power grid stability control strategy is divided into independent functional programs and test programs, which sense the operating status information of the power grid and the device itself in real time; the test program receives the test status command and preset fault simulation instructions sent by the stability control information management master station, and performs stability control strategy logic deduction based on the current real-time operating status and the preset faults received from the stability control information management master station.

9. The online verification system for a power grid stability control system according to claim 8, characterized in that: The stability control analysis master station is used to obtain operation information from the dispatching information management system and the stability control information management master station, specifically: obtaining the power grid operation status from the dispatching information management system and obtaining the power grid operation status, preset faults and stability control system action result information from the stability control information management master station.

10. An electronic device, characterized in that: include A processor; a memory and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 7 when executing the computer program.

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