A power failure plan implementability checking method and device

Abstract

This invention discloses a method and apparatus for verifying the feasibility of power outage plans. The method includes: acquiring a formatted power outage plan; the power outage plan includes: maintenance equipment and power outage adjustment schemes; based on the power outage adjustment schemes, performing equipment action sequence analysis on the maintenance equipment, and simulating the state based on the equipment action sequence analysis; for the maintenance equipment in the simulated state, constructing a topology tree using breadth-first search and voltage level control search methods; based on the topology tree, combined with historical load forecasts and predicted load data, calculating the power flow value of the maintenance equipment; and determining the feasibility of the power outage adjustment scheme based on the power flow value. By constructing a power grid topology model and performing simulations, and combining historical power flow data and load forecast data to achieve power flow calculations, the verification task is automatically completed. This achieves automatic verification of power outage plans, reducing power outage risks while saving labor costs and greatly improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of power system technology, and in particular to a method and apparatus for verifying the feasibility of a power outage plan. Background Technology

[0002] With the increasing number of power grid devices and the growing complexity of power topology, even the smallest oversight in the preparation of power outage plans and their arrangements can lead to power grid accidents, equipment damage, and even grid collapse. Therefore, the ability to verify the feasibility of power outage plans is of paramount importance.

[0003] Currently, when preparing power outage plans, relevant personnel mainly refer to historical power outage data of the equipment to be affected, and make corresponding adjustments to the outage arrangements and methods. This process requires manual analysis of the power grid topology and the calculation of power flow based on historical power flow data and load forecast data. Due to the complexity of the power grid topology, power flow calculations are often very complex and time-consuming. Errors in topology analysis or incorrect power flow calculations can reduce the safety and reliability of the power outage plan. Summary of the Invention

[0004] This invention provides a method and apparatus for verifying the feasibility of power outage plans, which can automatically verify power outage plans, reduce the risk of power outages, save labor costs, and greatly improve work efficiency.

[0005] In a first aspect, the present invention provides a method for verifying the feasibility of a power outage plan, comprising:

[0006] Obtain the formatted power outage plan; the power outage plan includes: equipment maintenance and power outage adjustment scheme;

[0007] Based on the power outage adjustment plan, the equipment under maintenance is subjected to equipment action sequence analysis, and state simulation is performed based on the equipment action sequence analysis.

[0008] For the maintenance equipment in the simulation state, a topology tree is constructed using breadth-first search and voltage level-controlled search methods;

[0009] Based on the topology tree, and combined with historical load forecasts and predicted load data, the power flow value of the equipment under maintenance is calculated.

[0010] The feasibility of the power outage adjustment plan is determined based on the power flow value.

[0011] Optionally, the feasibility of the power outage adjustment plan is determined based on the power flow value, including:

[0012] Based on the power flow value and the rated power of the equipment under maintenance, it is determined whether the load rate of the equipment under maintenance exceeds the load rate threshold.

[0013] If so, it is determined that the equipment under maintenance has exceeded its limits, and the power outage plan cannot be implemented;

[0014] If not, then the power outage plan is defined as feasible.

[0015] Optionally, based on the power outage adjustment scheme, the maintenance equipment undergoes equipment action sequence analysis, and state simulation is performed based on the equipment action sequence analysis, including:

[0016] Perform topology analysis on the maintenance equipment to obtain the power outage action sequence corresponding to the maintenance equipment;

[0017] Semantic analysis and model analysis of the maintenance equipment are performed on the power outage adjustment scheme to obtain the state transition information of the relevant equipment under the power outage action sequence, as well as the switch action sequence;

[0018] Based on the state transition information and the switch action sequence, the maintenance equipment is simulated.

[0019] Optionally, for the maintenance equipment in the simulated state, a topology tree is constructed using a breadth-first search and voltage level-controlled search method, including:

[0020] The 220kV main transformer power supply point of the equipment under maintenance in the simulation state was determined by using a breadth-first search and voltage level-controlled search method.

[0021] Based on the 220kV main transformer power supply point, a topology tree is constructed using the breadth-first search method.

[0022] Secondly, the present invention also provides a power outage plan feasibility verification device, comprising:

[0023] The acquisition module is used to acquire a formatted power outage plan; the power outage plan includes: equipment maintenance and power outage adjustment schemes.

[0024] The state simulation module is used to perform equipment action sequence analysis on the maintenance equipment based on the power outage adjustment plan, and to perform state simulation based on the equipment action sequence analysis.

[0025] The topology tree construction module is used to construct a topology tree for the maintenance equipment in the simulation state using breadth-first search and voltage level controlled search methods.

[0026] The power flow calculation module is used to calculate the power flow value of the maintenance equipment based on the topology tree and combined with historical load forecasts and predicted load data.

[0027] The feasibility determination module is used to determine the feasibility of the power outage adjustment plan based on the power flow value.

[0028] Optionally, the feasibility determination module includes:

[0029] The judgment submodule is used to determine whether the load rate of the maintenance equipment exceeds the load rate threshold based on the power flow value and the rated power of the equipment corresponding to the maintenance equipment.

[0030] If so, it is determined that the equipment under maintenance has exceeded its limits, and the power outage plan cannot be implemented;

[0031] If not, then the power outage plan is defined as feasible.

[0032] Optionally, the state simulation module includes:

[0033] The topology analysis submodule is used to perform topology analysis on the maintenance equipment to obtain the power outage action sequence corresponding to the maintenance equipment.

[0034] The semantic analysis submodule is used to perform semantic analysis on the power outage adjustment scheme and model analysis on the maintenance equipment to obtain the state transition information of related equipment under the power outage action sequence, as well as the switch action sequence;

[0035] The state simulation submodule is used to simulate the state of the maintenance equipment based on the state transition information and the action sequence of the switch and disconnector.

[0036] Optionally, the topology tree construction module includes:

[0037] The main transformer power supply point determination submodule is used to determine the 220kV main transformer power supply point of the maintenance equipment in the simulation state through a breadth-first search and voltage level control search method.

[0038] A submodule is constructed to build a topology tree based on the 220kV main transformer power supply point and in conjunction with the breadth-first search method.

[0039] A third aspect of this application provides an electronic device, the device including a processor and a memory;

[0040] The memory is used to store program code and transmit the program code to the processor;

[0041] The processor is used to execute the power plan feasibility verification method described in the first aspect according to the instructions in the program code.

[0042] A fourth aspect of this application provides a computer-readable storage medium for storing program code for executing the power plan feasibility verification method described in the first aspect.

[0043] As can be seen from the above technical solutions, the present invention has the following advantages:

[0044] This invention obtains a formatted power outage plan, which includes: maintenance equipment and power outage adjustment schemes. Based on the power outage adjustment schemes, it performs equipment action sequence analysis on the maintenance equipment and simulates its state. For the maintenance equipment in the simulated state, it constructs a topology tree using breadth-first search and voltage level control search methods. Based on the topology tree, combined with historical load forecasts and predicted load data, it calculates the power flow value of the maintenance equipment. Based on the power flow value, it determines the feasibility of the power outage adjustment scheme. By constructing a power grid topology model and performing simulations, combined with historical power flow data and load forecast data, it achieves power flow calculation and automatically completes the verification task. This enables automatic verification of power outage plans, reducing power outage risks, saving labor costs, and greatly improving work efficiency. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a flowchart illustrating the steps of an embodiment of the power outage plan feasibility verification method of the present invention;

[0047] Figure 2 This is a structural block diagram of an embodiment of a power outage plan feasibility verification device according to the present invention. Detailed Implementation

[0048] This invention provides a method and apparatus for verifying the feasibility of power outage plans, enabling automatic verification of power outage plans, reducing power outage risks, saving labor costs, and significantly improving work efficiency.

[0049] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0050] The existing power outage planning has the following drawbacks:

[0051] (1) Data needs to be viewed on different systems. Currently, power outage plans are mainly prepared and reviewed in the OMS system. When reviewing the plans, relevant personnel need to view information such as power flow diagrams and substation equipment diagrams in the SCADA system, and manually simulate the changed topology of the power grid based on the power outage plan. They also need to view the historical power flow data and future predicted load data of relevant equipment, manually calculate the power flow values ​​of the equipment, and analyze their reliability. Due to the large amount of data involved, it is necessary to view the data on different systems, making the operation extremely cumbersome and increasing the probability of errors.

[0052] (2) Manual analysis of power grid topology and calculation of power flow are highly complex and difficult. Manual analysis requires simulating topological relationships for the power outage plan and manually calculating power flow based on historical power flow data and load forecast data, demanding a high level of individual expertise. For inexperienced personnel, manual analysis and verification are extremely difficult, and even a small error can lead to drastically different results. Reviewing the implementation plan's attachments relies heavily on personnel experience; due to differences in individual expertise, equipment names, and a lack of holistic understanding, misjudgments and omissions are unavoidable, causing instability. To address these issues, this invention discloses a method for verifying the feasibility of power outage plans. Please refer to [link to relevant documentation]. Figure 1 , Figure 1 This is a flowchart illustrating the steps of a power outage plan feasibility verification method according to an embodiment of the present invention, which specifically includes the following steps:

[0053] S101, Obtain the formatted power outage plan; the power outage plan includes: equipment maintenance and power outage adjustment scheme;

[0054] In this embodiment of the invention, manually filled-in maintenance equipment and their power outage adjustment plans are first extracted. Then, the maintenance equipment and their adjustment plans are sorted and adjusted according to a pre-set format. Specifically, the adjustment of maintenance equipment involves: first, determining the equipment type (line, main transformer, busbar, etc.) based on the equipment name. For non-line equipment, the substation to which the equipment belongs is first obtained based on the context. The equipment name, equipment number, and other information are then matched with similar equipment in the substation to obtain equipment ID, number, and other information. For line equipment, line data is matched to obtain standard equipment information. Specifically, the adjustment of power outage adjustment plans involves: first, obtaining equipment information in the mode adjustment based on terminology templates and entity recognition technologies, and obtaining relevant equipment information according to the aforementioned equipment formatting method. Based on mode adjustment semantic recognition and relevant mode adjustment terminology templates, the mode adjustment is formatted according to the standard terminology template.

[0055] S102, Based on the power outage adjustment scheme, perform equipment action sequence analysis on the maintenance equipment, and perform state simulation based on the equipment action sequence analysis;

[0056] In an optional embodiment, based on the power outage adjustment scheme, equipment action sequence analysis is performed on the maintenance equipment, and state simulation is performed based on the equipment action sequence analysis, including:

[0057] Perform topology analysis on the maintenance equipment to obtain the power outage action sequence corresponding to the maintenance equipment;

[0058] Semantic analysis and model analysis of the maintenance equipment are performed on the power outage adjustment scheme to obtain the state transition information of the relevant equipment under the power outage action sequence, as well as the switch action sequence;

[0059] Based on the state transition information and the switch action sequence, the maintenance equipment is simulated.

[0060] In this embodiment of the invention, for the formatted power outage plan, a topology analysis is first performed to obtain the power outage action sequence of the maintenance equipment: First, the switch and disconnector equipment at each station end is obtained on the line. Based on the topology analysis, it is determined whether the station is a line-transformer group connection mode. If it is a line-transformer group connection mode, the associated main transformer should also be switched to cold standby state. Then, on the main transformer equipment, the information of the switch and disconnector associated with the main transformer winding on each side is obtained based on depth search. Subsequently, the associated switch and disconnector equipment is obtained using the bus.

[0061] Then, in order to ensure the stable operation of the power grid when the maintenance equipment is shut down, some adjustments need to be made to the power grid operation: based on semantic analysis and related equipment model analysis, the state transitions of related equipment and the action sequence of switch disconnectors are obtained during the adjustment of the formatted power outage plan.

[0062] Finally, the switch status of the equipment under power outage maintenance as analyzed above is set, and the equipment status is set according to the adjustment methods analyzed above, simulating the power grid topology during the entire power outage.

[0063] S103, For the maintenance equipment in the simulation state, a topology tree is constructed using a breadth-first search and voltage level-controlled search method;

[0064] In an optional embodiment, for the maintenance equipment in a simulated state, a topology tree is constructed using a breadth-first search and voltage level-controlled search method, including:

[0065] The 220kV main transformer power supply point of the equipment under maintenance in the simulation state was determined by using a breadth-first search and voltage level-controlled search method.

[0066] Based on the 220kV main transformer power supply point, a topology tree is constructed using the breadth-first search method.

[0067] In this embodiment of the invention, a breadth-first search is first used, along with voltage level control, to locate the 220kV main transformer power supply point for key equipment. Then, based on the 220kV main transformer power supply point, a breadth-first search is used to construct a topology tree for the main transformer, lines, and other equipment. The topology tree is then pruned so that all leaf nodes contain 10kV load data.

[0068] S104, Based on the topology tree, and combining historical load forecasts and predicted load data, the power flow value of the equipment under maintenance is calculated;

[0069] S105, Based on the power flow value, determine the feasibility of the power outage adjustment plan.

[0070] In an optional embodiment, determining the feasibility of the power outage adjustment plan based on the power flow value includes:

[0071] Based on the power flow value and the rated power of the equipment under maintenance, it is determined whether the load rate of the equipment under maintenance exceeds the load rate threshold.

[0072] If so, it is determined that the equipment under maintenance has exceeded its limits, and the power outage plan cannot be implemented;

[0073] If not, then the power outage plan is defined as feasible.

[0074] In this embodiment of the invention, a recursive function is constructed based on historical load forecast and predicted load data, and the power flow value of the equipment is calculated according to the load data. The over-limit situation of the maintenance equipment during the power outage plan is judged by comparing the rated power of the equipment. If the load rate of the maintenance equipment exceeds 90%, the maintenance equipment is defined as having an over-limit situation, and the power outage plan cannot be implemented.

[0075] This invention provides an embodiment of a power outage plan. The outage plan includes: maintenance equipment and an outage adjustment scheme. Based on the adjustment scheme, the maintenance equipment undergoes action sequence analysis, and a state simulation is performed. For the simulated maintenance equipment, a topology tree is constructed using breadth-first search and voltage level control search. Based on the topology tree, combined with historical load forecasts and predicted load data, the power flow value of the maintenance equipment is calculated. The feasibility of the outage adjustment scheme is determined based on the power flow value. By constructing a power grid topology model and performing simulations, combined with historical power flow data and load forecast data, power flow calculations are achieved, automatically completing the verification task. This enables automatic verification of outage plans, reducing outage risks, saving labor costs, and significantly improving work efficiency.

[0076] Please see Figure 2 The diagram shows a structural block diagram of an embodiment of a power outage plan feasibility verification device, which includes the following modules:

[0077] The acquisition module 201 is used to acquire a formatted power outage plan; the power outage plan includes: equipment maintenance and power outage adjustment scheme.

[0078] The state simulation module 202 is used to perform equipment action sequence analysis on the maintenance equipment based on the power outage adjustment plan, and to perform state simulation based on the equipment action sequence analysis.

[0079] The topology tree construction module 203 is used to construct a topology tree for the maintenance equipment in the simulation state using a breadth-first search and voltage level controlled search method.

[0080] The power flow calculation module 204 is used to calculate the power flow value of the maintenance equipment based on the topology tree and combined with historical load forecasts and predicted load data.

[0081] The feasibility determination module 205 is used to determine the feasibility of the power outage adjustment plan based on the power flow value.

[0082] In an optional embodiment, the executability determination module includes:

[0083] The judgment submodule is used to determine whether the load rate of the maintenance equipment exceeds the load rate threshold based on the power flow value and the rated power of the equipment corresponding to the maintenance equipment.

[0084] If so, it is determined that the equipment under maintenance has exceeded its limits, and the power outage plan cannot be implemented;

[0085] If not, then the power outage plan is defined as feasible.

[0086] In an optional embodiment, the state simulation module includes:

[0087] The topology analysis submodule is used to perform topology analysis on the maintenance equipment to obtain the power outage action sequence corresponding to the maintenance equipment.

[0088] The semantic analysis submodule is used to perform semantic analysis on the power outage adjustment scheme and model analysis on the maintenance equipment to obtain the state transition information of related equipment under the power outage action sequence, as well as the switch action sequence;

[0089] The state simulation submodule is used to simulate the state of the maintenance equipment based on the state transition information and the action sequence of the switch and disconnector.

[0090] In an optional embodiment, the topology tree building module includes:

[0091] The main transformer power supply point determination submodule is used to determine the 220kV main transformer power supply point of the maintenance equipment in the simulation state through a breadth-first search and voltage level control search method.

[0092] A submodule is constructed to build a topology tree based on the 220kV main transformer power supply point and in conjunction with the breadth-first search method.

[0093] This application also provides an electronic device, which includes a processor and a memory;

[0094] The memory is used to store program code and transfer the program code to the processor;

[0095] The processor is used to execute the power plan feasibility verification method in the above method embodiment according to the instructions in the program code.

[0096] This application also provides a computer-readable storage medium for storing program code for executing the power plan feasibility verification method in the above method embodiments.

[0097] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0098] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0099] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0100] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for executing all or part of the steps of the methods described in the various embodiments of this application through a computer device (which may be a personal computer, server, or network device, etc.). The aforementioned storage medium includes: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0101] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for verifying the feasibility of a power outage plan, characterized in that, include: Retrieve the formatted power outage schedule; The power outage plan includes: equipment maintenance and power outage adjustment scheme; Based on the power outage adjustment plan, the equipment under maintenance is subjected to equipment action sequence analysis, and state simulation is performed based on the equipment action sequence analysis; For the maintenance equipment in the simulation state, a topology tree is constructed using breadth-first search and voltage level-controlled search methods; Based on the topology tree, and combined with historical load forecasts and predicted load data, the power flow value of the equipment under maintenance is calculated. Based on the power flow value, determine the feasibility of the power outage adjustment plan; Based on the power flow value, the feasibility of the power outage adjustment plan is determined, including: Based on the power flow value and the rated power of the equipment under maintenance, it is determined whether the load rate of the equipment under maintenance exceeds the load rate threshold. If so, it is determined that the equipment under maintenance has exceeded its limits, and the power outage plan cannot be implemented; If not, then the power outage plan is defined as feasible; Based on the power outage adjustment plan, the maintenance equipment undergoes equipment action sequence analysis, and state simulation is performed based on the equipment action sequence analysis, including: Perform topology analysis on the maintenance equipment to obtain the power outage action sequence corresponding to the maintenance equipment; Semantic analysis and model analysis of the maintenance equipment are performed on the power outage adjustment scheme to obtain the state transition information of the relevant equipment under the power outage action sequence, as well as the switch action sequence; Based on the state transition information and the switch action sequence, the maintenance equipment is simulated.

2. The method for verifying the feasibility of a power outage plan according to claim 1, characterized in that, For the maintenance equipment in a simulated state, a topology tree is constructed using a breadth-first search and voltage level-controlled search method, including: The 220kV main transformer power supply point of the equipment under maintenance in the simulation state was determined by using a breadth-first search and voltage level-controlled search method. Based on the 220kV main transformer power supply point, a topology tree is constructed using the breadth-first search method.

3. A device for verifying the feasibility of a power outage plan, characterized in that, include: The acquisition module is used to obtain the formatted power outage plan; The power outage plan includes: equipment maintenance and power outage adjustment scheme; The state simulation module is used to perform equipment action sequence analysis on the maintenance equipment based on the power outage adjustment plan, and to perform state simulation based on the equipment action sequence analysis. The topology tree construction module is used to construct a topology tree for the maintenance equipment in the simulation state using breadth-first search and voltage level controlled search methods. The power flow calculation module is used to calculate the power flow value of the maintenance equipment based on the topology tree and combined with historical load forecasts and predicted load data. The feasibility determination module is used to determine the feasibility of the power outage adjustment plan based on the power flow value; The feasibility determination module includes: The judgment submodule is used to determine whether the load rate of the maintenance equipment exceeds the load rate threshold based on the power flow value and the rated power of the equipment corresponding to the maintenance equipment. If so, it is determined that the equipment under maintenance has exceeded its limits, and the power outage plan cannot be implemented; If not, then the power outage plan is defined as feasible; The state simulation module includes: The topology analysis submodule is used to perform topology analysis on the maintenance equipment to obtain the power outage action sequence corresponding to the maintenance equipment. The semantic analysis submodule is used to perform semantic analysis on the power outage adjustment scheme and model analysis on the maintenance equipment to obtain the state transition information of related equipment under the power outage action sequence, as well as the switch action sequence; The state simulation submodule is used to simulate the state of the maintenance equipment based on the state transition information and the action sequence of the switch and disconnector.

4. The power outage plan feasibility verification device according to claim 3, characterized in that, The topology tree construction module includes: The main transformer power supply point determination submodule is used to determine the 220kV main transformer power supply point of the maintenance equipment in the simulation state through a breadth-first search and voltage level control search method. A submodule is constructed to build a topology tree based on the 220kV main transformer power supply point and in conjunction with the breadth-first search method.

5. An electronic device, characterized in that, It includes a processor and a memory, the memory storing computer-readable instructions that, when executed by the processor, perform the method as described in any one of claims 1-2.

6. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed, it performs the method as described in any one of claims 1-2.

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