A method, system, program, device, and storage medium for multi-zone fault handling based on shared control resources

Abstract

The application discloses a kind of multi-area fault processing method, system, program, equipment and storage medium based on shared control resource, method includes: control main station handles single area fault, calculates the control amount of each type of control resource according to single area fault strategy;Control substation calculates the remaining controllable amount of each type of control resource according to the total amount of each type of control resource locked before failure minus the control amount of each type of control resource allocated by single area fault;After the information of multi-area combination fault is obtained by coordination control master station, wait for delay, so that the remaining amount of each type of control resource is refreshed to current state based on the remaining controllable amount of each type of control resource;The control amount of each type of control resource is calculated according to multi-area combination fault strategy, and the remaining amount of each type of control resource is used as current controllable amount, which is allocated from it, to complete multi-area fault processing;The application comprehensively considers the scene of multi-area fault decentralized decision from the perspective of control resource remaining power and feedback time, with the characteristics of overall, accurate and easy to implement.

Description

Technical Field

[0001] This invention belongs to the field of power grid safety and stability control technology, and in particular relates to a multi-region fault handling method, system, program, device and storage medium based on shared control resources. Background Technology

[0002] With the rapid development of ultra-high voltage AC and DC transmission, in order to cope with the problem of high power impact caused by DC / AC faults in multiple regions, each regional power grid has built a system protection and control system.

[0003] The system protection coordination control system mainly adopts a centralized decision-making mode, where multi-region DC / AC fault information and various control resources are collected by the coordination control center of the system. Based on single-region and multi-region fault strategies, a unified decision is made to allocate the controllable quantities of various resources. This mode has the following problems: First, the strategies are overly centralized in a single "brain," and if the coordination control center leaves for various reasons, neither the single-region nor multi-region fault strategies can be executed. Second, the implementation process has a significant impact on existing single-region fault control systems, requiring a transformation of the original control architecture into a centralized decision-making control architecture. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide a multi-region fault handling method, system, program, device, and storage medium based on shared control resources that can improve the stability of power grid operation.

[0005] Technical Solution: The present invention provides a multi-region fault handling method based on shared control resources. This method is applied to a system protection collaborative control system, which includes: a central collaborative control station, a master collaborative control station, a master control station, control substations, and execution stations. The central collaborative control station is interconnected with the master collaborative control station, the master collaborative control station with the master control station, the master control station with the control substations, and the control substations with the execution stations. Furthermore, control substations can connect to different master control stations and cascade control substations. The master collaborative control station is responsible for aggregating and distributing various resources among the master control stations. The execution stations are responsible for implementing and providing feedback on various resource control measures.

[0006] The method includes:

[0007] The control master station handles single-area faults and calculates the required control quantities of various control resources according to the single-area fault strategy.

[0008] The control substation calculates the remaining controllable amount of various control resources based on the total amount of various control resources locked before the fault and the amount of various control resources that need to be controlled in a single area fault.

[0009] After the central control station obtains information on combined faults in multiple areas and waits for a delay, the remaining quantities of various control resources are refreshed to the current state based on the remaining controllable quantities of various control resources.

[0010] The required control quantities of various control resources are calculated according to the multi-region combined fault strategy. The remaining quantities of various control resources are used as the current controllable quantities, and the allocation is carried out from them to complete the multi-region fault handling.

[0011] Furthermore, it also includes setting the same group start time for the coordinated control station, coordinated control master station, control master station, control substation and execution station. The amount of various control resources used for a single area fault and the total amount of various control resources used for multiple area faults are locked at the same start time, and the control commands of various control resources are in the same group cycle.

[0012] Furthermore, the calculation of the remaining controllable quantity of various control resources also includes: obtaining information on different control resources according to different aggregation principles. Specifically, for aggregation based on a specified object dimension, the information on the removed specified object needs to be obtained; for aggregation based on a capacity dimension, the information on the removed capacity needs to be obtained.

[0013] Furthermore, after the central control station obtains multi-region combined fault information and waits for a delay, the delay... Configure it as follows:

[0014] Acquisition of single-area fault information and command processing delay ; Acquiring multi-region fault information and command processing delay The update delay for the remaining amount of various control resources is... ; Calculate delay .

[0015] Furthermore, after the central control station obtains the combined fault information of multiple regions and waits for a delay, the remaining amount of various control resources is refreshed to the current state based on the remaining controllable amount of various control resources. It also includes taking the controllable amount of that type of resource locked before startup as the current controllable amount to participate in the allocation when the remaining controllable amount of a certain type of control resource has not been refreshed.

[0016] Furthermore, it also includes the following: when the remaining controllable quantity of various controllable resources refreshes abnormally, the difference between the previous remaining controllable quantity and the previously allocated quantity is calculated as the current controllable quantity to participate in the allocation.

[0017] Based on the same inventive concept, the present invention also provides a multi-region fault handling system based on shared control resources that uses the multi-region fault handling method based on shared control resources as described in any of the above claims, characterized in that it includes:

[0018] The single fault handling module is used to control the master station to handle single-area faults and calculate the required control quantities of various control resources according to the single-area fault strategy.

[0019] The remaining control resource refresh module is used by the control substation to calculate the remaining controllable amount of various control resources based on the total amount of various control resources locked before the fault and the amount of various control resources that need to be controlled in a single area fault.

[0020] The remaining control resource receiving module is used by the central control station to obtain multi-area combined fault information and wait for a delay, so that the remaining amount of various control resources is refreshed to the current state based on the remaining controllable amount of various control resources.

[0021] The multi-region fault handling module is used to calculate the controllable quantities of various control resources according to the multi-region combined fault strategy, and to allocate the remaining quantities of various control resources as the current controllable quantities to complete the multi-region fault handling.

[0022] Based on the same inventive concept, the present invention also provides a computer program product, including a computer program / instruction, characterized in that, when the computer program / instruction is executed by a processor, it implements the steps of the multi-region fault handling method based on shared control resources as described in any of the preceding claims.

[0023] Based on the same inventive concept, the present invention also provides a computing device, characterized in that it includes: one or more processors, one or more memories, and one or more programs, said programs being stored in the memory and configured to be executed by the processor, said programs being loaded onto the processor to implement the steps of the multi-region fault handling method based on shared control resources according to any one of the preceding claims.

[0024] Based on the same inventive concept, the present invention also provides a storage medium storing a computer program, the computer program including program instructions, which, when executed by a processor, cause the processor to perform the steps of the multi-region fault handling method based on shared control resources as described in any of the preceding claims.

[0025] Beneficial Effects: Compared with the prior art, the present invention has the following significant advantages: 1. The method and system proposed in this invention are a beneficial supplement to centralized decision-making for multi-regional faults: When dealing with multi-regional fault decision-making, the present invention comprehensively considers the scenario of decentralized decision-making for multi-regional faults from the perspective of the remaining power of control resources and feedback time, which is more comprehensive and the calculation of control resources under decentralized decision-making scenarios is more accurate, thus better supporting the stable operation of the power grid; 2. The present invention decouples the single-regional fault decision-making function from the multi-regional fault decision-making function. For systems that already have the single-regional fault decision-making function, only the multi-regional fault decision-making function needs to be added. It is convenient to implement, has little impact, and the multi-regional fault decision-making function can be flexibly enabled or disabled without affecting the single-regional fault decision-making function. Attached Figure Description

[0026] Figure 1This is a flowchart of a method according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram illustrating the waiting delay for multi-region fault handling in an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the system structure according to an embodiment of the present invention. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1, such as Figure 1 As shown in this embodiment, a multi-area fault handling method based on shared control resources is applied to a system protection collaborative control system. The system protection collaborative control system includes: a collaborative control central station, a collaborative control master station, a control master station, control substations, and execution stations. The collaborative control central station is interconnected with the collaborative control master station, the collaborative control master station is interconnected with the control master station, the control master station is interconnected with the control substations, and the control substations are interconnected with the execution stations. Furthermore, control substations can connect to different control master stations and cascade control substations. The collaborative control master station is responsible for aggregating various resources and allocating them among the control master stations. The execution stations are responsible for executing and providing feedback on various resource control measures.

[0031] The method includes:

[0032] The control master station handles single-area faults and calculates the required control quantities of various control resources according to the single-area fault strategy.

[0033] The control substation calculates the remaining controllable amount of various control resources based on the total amount of various control resources locked before the fault and the amount of various control resources that need to be controlled in a single area fault.

[0034] After the central control station obtains information on combined faults in multiple areas and waits for a delay, the remaining quantities of various control resources are refreshed to the current state based on the remaining controllable quantities of various control resources.

[0035] The required control quantities of various control resources are calculated according to the multi-region combined fault strategy. The remaining quantities of various control resources are used as the current controllable quantities, and the allocation is carried out from them to complete the multi-region fault handling.

[0036] Furthermore, the startup time of the entire group is set, and the amount of various control resources used for a single area fault and the total amount of various control resources used for multiple area faults are locked at the same startup time. In addition, the control commands of various control resources that are interacted are in the same whole group cycle.

[0037] In this embodiment, the coordinated control station, coordinated control master station, control master station, control substation, and execution station are set to the same group start time. The control substation that monitors the fault ensures that the total amount of various control resources used by a single area fault and a multi-area fault is locked at the same start time by sending synchronous start flag information, and the control commands of various control resources are in the same group cycle.

[0038] Furthermore, the information required for calculating the remaining controllable quantity of various control resources differs depending on the aggregation principle. For aggregation based on a specified object dimension, the information on the removed portion of that object needs to be obtained; for aggregation based on a capacity dimension, the information on the removed capacity needs to be obtained.

[0039] In this embodiment, when calculating the remaining controllable quantity of pumped storage units aggregated by a specified object, it is necessary to obtain the disconnected information of the unit; when calculating the remaining controllable quantity of energy storage units aggregated by capacity, it is necessary to obtain the disconnected capacity information of energy storage units.

[0040] Furthermore, the waiting delay for multi-region fault handling The following settings are required:

[0041] like Figure 2 As shown, assuming the delay for obtaining fault information and processing commands in a single area is... The delay for obtaining multi-region fault information and command processing is... The update delay for the remaining amount of various control resources is... ;but .

[0042] Furthermore, if the remaining controllable quantity of a certain type of control resource has not been refreshed, the controllable quantity of that type of resource locked before startup is taken as the current controllable quantity and used for allocation.

[0043] Furthermore, when the remaining controllable quantity of various controllable resources refreshes abnormally, the difference between the previous remaining controllable quantity and the previous allocated quantity is calculated and used as the current controllable quantity for allocation.

[0044] The computer device described in this embodiment is characterized by including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method.

[0045] The computer-readable storage medium described in this embodiment is characterized in that it stores a computer program thereon, which, when executed by a processor, implements the steps of the method described.

[0046] The multi-area fault handling system based on shared control resources described in this embodiment includes:

[0047] The single fault handling module is used to control the master station to handle single-area faults and calculate the required control quantities of various control resources according to the single-area fault strategy.

[0048] The remaining control resource refresh module is used by the control substation to calculate the remaining controllable amount of various control resources based on the total amount of various control resources locked before the fault and the amount of various control resources that need to be controlled in a single area fault.

[0049] The remaining control resource receiving module is used by the central control station to obtain multi-area combined fault information and wait for a delay, so that the remaining amount of various control resources is refreshed to the current state based on the remaining controllable amount of various control resources.

[0050] The multi-region fault handling module is used to calculate the controllable quantities of various control resources according to the multi-region combined fault strategy, and to allocate the remaining quantities of various control resources as the current controllable quantities to complete the multi-region fault handling.

[0051] Example 2: Fault handling in this example, such as Figure 3 As shown, in the system protection using this control structure, the control system includes a single fault handling module, a remaining control resource refresh module, a remaining control resource receiving module, and a multi-area fault handling module. Both control master station 1 and control master station 2 are equipped with a single fault handling module; control master station 1 is responsible for handling faults in area 1, and control master station 2 is responsible for handling faults in area 2. Both control substation 1 and control substation 2 are equipped with a remaining control resource refresh module. Control substation 1 calculates the remaining controllable quantities of various resources based on the total controllable quantities before startup and the allocated quantities for faults in area 1, and sends this information to control master station 3. Control substation 2 calculates the remaining controllable quantities of various resources based on the total controllable quantities before startup and the allocated quantities for faults in area 2, and sends this information to control master station 4. The co-control master station 1 collects fault information from area 1 and area 2 and sends it to the co-control main station. The co-control master station 2 collects the remaining controllable quantities of various resources from control master stations 3 and 4 and sends it to the co-control main station. The co-control main station is equipped with a remaining control resource receiving module and a multi-area fault processing module. It receives the remaining quantities of various control resources sent by the co-control master station 2 and comprehensively calculates the remaining quantities of various resources that can be allocated. It receives the fault information from area 1 and area 2 sent by the co-control master station 1 and calculates the required control quantity according to the combined fault strategy after a delay of T.

[0052] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Therefore, any modifications made to the technical solution of the present invention based on the technical concept proposed in this invention shall fall within the scope of protection of the present invention.

Claims

1. A multi-region fault handling method based on shared control resources, characterized in that, The method is applied to a system protection collaborative control system, which includes: a collaborative control central station, a collaborative control master station, a control master station, control substations, and execution stations. The collaborative control central station is interconnected with the collaborative control master station, the collaborative control master station with the control master station, the control master station with the control substations, and the control substations with the execution stations. Furthermore, control substations can connect to different control master stations and be cascaded. The collaborative control master station is responsible for aggregating and distributing various resources among the control master stations. The execution stations are responsible for implementing and providing feedback on various resource control measures. The method includes: The control master station handles single-area faults and calculates the required control quantities of various control resources according to the single-area fault strategy. The control substation calculates the remaining controllable amount of various control resources based on the total amount of various control resources locked before the fault and the amount of various control resources that need to be controlled in a single area fault. After the central control station obtains information on combined faults in multiple areas and waits for a delay, the remaining quantities of various control resources are refreshed to the current state based on the remaining controllable quantities of various control resources. The required control quantities of various control resources are calculated according to the multi-region combined fault strategy. The remaining quantities of various control resources are used as the current controllable quantities, and the allocation is carried out from them to complete the multi-region fault handling.

2. The multi-region fault handling method based on shared control resources according to claim 1, characterized in that, It also includes setting the same group start time for the coordinated control station, coordinated control master station, control master station, control substation and execution station. The amount of various control resources used for a single area fault and the total amount of various control resources used for multiple area faults are locked at the same start time, and the control commands of various control resources are in the same group cycle.

3. The multi-region fault handling method based on shared control resources according to claim 1, characterized in that, The calculation of the remaining controllable quantity of various control resources also includes: obtaining information on different control resources according to different aggregation principles. Specifically, for aggregation based on a specified object dimension, the information on the removed specified object needs to be obtained; for aggregation based on a capacity dimension, the information on the removed capacity needs to be obtained.

4. The multi-region fault handling method based on shared control resources according to claim 1, characterized in that, After the central control station obtains information on combined faults in multiple areas, it waits for a delay. Configure it as follows: Acquisition of single-area fault information and command processing delay ; Acquiring multi-region fault information and command processing delay The update delay for the remaining amount of various control resources is... ; Calculate delay .

5. The multi-region fault handling method based on shared control resources according to claim 1, characterized in that, After the central control station obtains the combined fault information of multiple regions and waits for a delay, the remaining amount of various control resources is refreshed to the current state based on the remaining controllable amount of various control resources. It also includes taking the controllable amount of that type of resource locked before startup as the current controllable amount to participate in the allocation when the remaining controllable amount of a certain type of control resource has not been refreshed.

6. The multi-region fault handling method based on shared control resources according to claim 1, characterized in that, It also includes the following: when the remaining controllable quantity of various controllable resources refreshes abnormally, the difference between the previous remaining controllable quantity and the previous allocated quantity is calculated as the current controllable quantity to participate in the allocation.

7. A multi-region fault handling system based on shared control resources, using the multi-region fault handling method based on shared control resources as described in any one of claims 1-6, characterized in that, include: The single fault handling module is used to control the master station to handle single-area faults and calculate the required control quantities of various control resources according to the single-area fault strategy. The remaining control resource refresh module is used by the control substation to calculate the remaining controllable amount of various control resources based on the total amount of various control resources locked before the fault and the amount of various control resources that need to be controlled in a single area fault. The remaining control resource receiving module is used by the central control station to obtain multi-area combined fault information and wait for a delay, so that the remaining amount of various control resources is refreshed to the current state based on the remaining controllable amount of various control resources. The multi-region fault handling module is used to calculate the controllable quantities of various control resources according to the multi-region combined fault strategy, and to allocate the remaining quantities of various control resources as the current controllable quantities to complete the multi-region fault handling.

8. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the steps of the multi-region fault handling method based on shared control resources according to any one of claims 1 to 6.

9. A computing device, characterized in that, include: One or more processors, one or more memories, and one or more programs, said programs being stored in the memory and configured to be executed by the processor, said programs being loaded onto the processor to implement the steps of the multi-region fault handling method based on any one of claims 1 to 6.

10. A storage medium, characterized in that, The storage medium stores a computer program, which includes program instructions that, when executed by a processor, cause the processor to perform the steps of the multi-region fault handling method based on shared control resources according to any one of claims 1 to 6.

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