A main and distribution network integrated power cut management method and platform based on optimal maintenance plan

Abstract

The application discloses a kind of based on overhaul plan optimal main distribution network integrated power cut management and control method and platform, comprising the following steps: obtaining power grid internal main network OMS system, distribution network OMS system and PMS system data, complete information system integration;Analysis main network and distribution network power cut plan, build function model with the optimization target of minimizing user plan power cut quantity;Using improved epsilon constraint method, the pareto frontier set considering the optimal main network and distribution network power cut plan is obtained, and the optimal power cut plan is obtained using fuzzy multi-weight technology;According to optimal power cut plan, realize main network power cut plan process management and distribution network power cut plan intensive management.The application is integrated to multiple information systems in power grid, and the optimal power cut plan is determined by using improved epsilon constraint method and fuzzy multi-weight technology to realize main network power cut plan process management and distribution network power cut plan intensive management by modeling main network and distribution network power cut plan with the target of minimizing user plan power cut quantity.

Description

Technical Field

[0001] This invention relates to the field of power grid outage management, and in particular to an integrated power outage control method and platform for main and distribution networks based on optimal maintenance plans. Background Technology

[0002] Power outage management is a core business of power grid dispatch management. With the continuous enhancement of the modern power system network structure, the number of maintenance tasks brought about by power outage plans has also increased explosively. However, the existing power outage plan management systems at different levels cannot communicate with each other, and the same plan needs to be repeatedly submitted in different systems, which greatly reduces work efficiency.

[0003] Therefore, this invention proposes an integrated power outage management platform for the main and distribution networks that considers the optimal maintenance plan, so as to achieve lean management and control of the entire process of power outage plans for the main and distribution networks. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes an integrated power outage management method and platform for main and distribution networks based on optimal maintenance plans.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] This invention provides an integrated power outage management method for main and distribution networks based on optimal maintenance plans, comprising the following steps:

[0007] Acquire data from the main grid OMS system, distribution network OMS system, and PMS system within the power grid to complete information system integration;

[0008] Analyze the power outage plans of the main grid and distribution network, and build a function model with the optimization objective of minimizing the planned power outage amount for users;

[0009] Based on the function of minimizing the planned outage amount of users as the optimization objective, the improved epsilon constraint method is used to obtain the Pareto front set that considers the optimal outage plan of the main grid and distribution network, and the optimal outage plan is obtained by using fuzzy multi-weighting technology.

[0010] Based on the optimal power outage plan, the system achieves process-oriented management of main grid power outage plans and intensive management of distribution network power outage plans.

[0011] Preferably, the data from the main grid OMS system, distribution network OMS system, and PMS system within the power grid include power grid topology, equipment telemetry and remote sensing data, and outage range information.

[0012] Preferably, the function model for minimizing the planned user power outage as the optimization objective is:

[0013]

[0014] In the formula, Spow To minimize planned power outages for users, Let the total power outage amount be the amount of electricity lost after the planned power outage for the i-th user is executed. Let T be the total outage power after the planned outage for the i-th user is executed, T be the total planned outage time, and n be the total number of users within the planned outage area.

[0015] Preferably, the step of using the function of minimizing the planned outage amount for users as the optimization objective, employing the improved epsilon constraint method, derives the Pareto front set that considers the optimal outage plan for both the main grid and distribution network, and then uses fuzzy multi-weighting technology to obtain the optimal outage plan; the specific steps include:

[0016] The function normalization method is used to normalize the distribution network optimization function and the main network optimization function to the same order of magnitude;

[0017] Find the Pareto fronts of the minimum planned outage amount for users considering the main grid maintenance plan and the minimum planned outage amount for users considering the distribution network maintenance plan;

[0018] The weights of the distribution network maintenance plan and the main network maintenance plan are evaluated separately by using the fuzzy multi-weight method, so that the maintenance plans of both the main and distribution networks can be optimized at the same time.

[0019] Preferably, the method of using function normalization to normalize the distribution network optimization function and the main network optimization function to the same order of magnitude specifically involves:

[0020]

[0021]

[0022] In the formula, F1' is the optimal value of the distribution network optimization function, and F2' is the optimal value of the main network optimization function. These represent the operating parameters that allow the distribution network to achieve its optimal values. These represent the operating parameters when the mainnet achieves its optimal value.

[0023] Preferably, the Pareto frontier set of the minimum planned user outage power specifically includes:

[0024]

[0025]

[0026]

[0027]

[0028] In the formula, β i γ iThese are the upper, middle, and lower constraint values ​​of the objective function value at the k-th iteration, F. i,pumin F i,pumean F i,pumax These are the minimum, average, and maximum values ​​of the objective function on the Pareto front set, respectively.

[0029] Preferably, the main and distribution network maintenance plan is simultaneously optimally represented as follows:

[0030]

[0031]

[0032] In the formula, OBJ * For the optimal power outage plan, FUZZY is the optimal value for the i-th maintenance method. i,k The objective function value after k iterations of the fuzzy weighting method for the i-th maintenance method.

[0033] Preferably, the main grid power outage plan process includes scheme management and basic information maintenance, plan application management, and

[0034] Archiving and statistical analysis; the centralized management of power outage plans in the power distribution network includes functions such as unified application for cross-regional power outage maintenance, unified work permits, and unified equipment maintenance management.

[0035] This invention also provides an integrated power outage management and control platform for main and distribution networks based on optimal maintenance plans, the platform comprising:

[0036] The system integration module is used to acquire data from the main grid OMS system, distribution network OMS system and PMS system within the power grid, and to complete the information system integration;

[0037] The function module is used to analyze the power outage plans of the main grid and distribution network, and to build a function model with the optimization objective of minimizing the planned power outage amount for users;

[0038] The power outage planning module is used to derive the optimal Pareto front set considering both the main grid and distribution network power outage plans based on the function of minimizing the planned power outage amount of users. It uses the improved epsilon constraint method and the fuzzy multi-weight technique to obtain the optimal power outage plan.

[0039] The power outage management module is used to achieve process-oriented management of main grid power outage plans and intensive management of distribution network power outage plans based on the optimal power outage plan.

[0040] The beneficial effects of this invention are:

[0041] 1. This invention integrates the internal frameworks of the main grid OMS system, marketing data management system, and PMS system to achieve the fusion of underlying data and business. It can analyze the main grid power outage plan and the distribution grid power outage plan, select the optimal power outage plan, and realize the process-oriented management of the main grid power outage plan and the intensive management of the distribution grid power outage plan.

[0042] 2. Based on the existing main network OMS system, distribution network OMS system, and PMS system, data bus technology is used to realize the integration of underlying data and services, and promote the homogenization of power outage plans at different network levels. Attached Figure Description

[0043] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0044] Figure 1 A flowchart of an integrated power outage control method for main and distribution networks based on optimal maintenance plans, provided in an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the integrated power outage management and control platform for main and distribution networks based on optimal maintenance plans, provided in an embodiment of the present invention.

[0046] Figure 3 This is a flowchart of the main grid power outage plan process management provided in one embodiment of the present invention.

[0047] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] An integrated power outage management platform for main and distribution networks that optimizes maintenance plans, such as Figure 1 As shown, it includes the following steps:

[0050] S100: Acquire data from the main grid OMS system, distribution network OMS system and PMS system within the power grid, and complete information system integration;

[0051] Furthermore, the data from the main grid OMS system, distribution network OMS system, and PMS system within the power grid include power grid topology, equipment telemetry and remote sensing data, and outage range information.

[0052] Specifically, multiple information sources within the power grid are integrated based on the existing system. Through the data exchange bus, data from the main grid OMS system, distribution network OMS system, and PMS system within the power grid are accessed to obtain power grid topology, equipment telemetry and remote sensing data, and outage range information, thus completing the information system integration.

[0053] S200: Analyze the power outage plans of the main grid and distribution network, and build a function model that takes minimizing the planned power outage amount for users as the optimization objective;

[0054] In this embodiment, the objective function for minimizing planned user power outages is:

[0055]

[0056] In the formula, S pow To minimize planned power outages for users, Let the total power outage amount be the amount of electricity lost after the planned power outage for the i-th user is executed. Let T be the total outage power after the planned outage for the i-th user is executed, T be the total planned outage time, and n be the total number of users within the planned outage area.

[0057] S300: Based on the function of minimizing the planned outage amount of users as the optimization objective, the improved epsilon constraint method is used to obtain the Pareto front set that considers the optimal outage plan of the main grid and distribution network, and the optimal outage plan is obtained by using fuzzy multi-weighting technology;

[0058] In this embodiment, based on the function of minimizing the planned power outage amount for users as the optimization objective, an improved epsilon constraint method is used to derive the Pareto front set that considers the optimal power outage plan for both the main grid and the distribution network, and fuzzy multi-weighting technology is used to obtain the optimal power outage plan; the specific steps include:

[0059] S310: Use the function normalization method to normalize the distribution network optimization function and the main network optimization function to the same order of magnitude;

[0060] S320: Find the Pareto front set of the minimum planned outage amount for users considering the main grid maintenance plan and the minimum planned outage amount for users considering the distribution network maintenance plan;

[0061] S330: The weights of the distribution network maintenance plan and the main network maintenance plan are evaluated separately using the fuzzy multi-weight method, so that the maintenance plans of the main and distribution networks can be optimized at the same time.

[0062] Specifically, an improved epsilon constraint method is used to obtain the Pareto front set considering the optimal power outage plans for both the main grid and distribution network. Then, fuzzy multi-weighting techniques are used to determine the optimal power outage plan. Using the optimization objective function of minimizing planned user outages mentioned above, different optimization objective functions for distribution and main grids are considered separately. The improved epsilon constraint method is used to solve the multi-objective model. First, a function normalization method is used to normalize the distribution network optimization function and the main grid optimization function to the same order of magnitude. Specifically:

[0063]

[0064]

[0065] In the formula, F1' is the optimal value of the distribution network optimization function, and F2' is the optimal value of the main network optimization function. These represent the operating parameters that allow the distribution network to achieve its optimal values. These represent the operating parameters when the mainnet achieves its optimal value.

[0066] The Pareto front set of the objective function can be obtained from the above formula, specifically including:

[0067]

[0068]

[0069]

[0070]

[0071] In the formula, β i γ i These are the upper, middle, and lower constraint values ​​of the objective function value at the k-th iteration, F. i,pumin F i,pumean F i,pumax These are the minimum, average, and maximum values ​​of the objective function on the Pareto front set, respectively.

[0072] The optimal maintenance plan for the main and distribution networks is ultimately determined using fuzzy multi-weighting techniques, and can be expressed as:

[0073]

[0074]

[0075] In the formula, OBJ * For the optimal power outage plan, FUZZY is the optimal value for the i-th maintenance method. i,kThe objective function value after k iterations of the fuzzy weighting method for the i-th maintenance method.

[0076] In this invention, the optimal maintenance plan is refined into the minimum planned outage amount for each user. The optimal maintenance plan is determined when both the planned outage amount for the main grid and the planned outage amount for the distribution network reach their minimum. Considering that the planned outage amounts for both the main grid and the distribution network cannot simultaneously reach their minimum to achieve optimal maintenance, this invention uses the Pareto front set to find the optimal plan for both the main grid and the distribution network, and employs fuzzy multi-weighting techniques to solve the problem.

[0077] S400: Based on the optimal power outage plan, it realizes the process-oriented management of the main grid power outage plan and the intensive management of the distribution network power outage plan.

[0078] Furthermore, the main grid power outage plan process management includes scheme management and basic information maintenance, plan application management,

[0079] Archiving and statistical analysis; the centralized management of power outage plans includes unified cross-regional power outage maintenance applications, unified work permits, and unified equipment maintenance management. This solidifies the power outage planning process system, significantly reducing temporary and recurring power outages.

[0080] This invention first integrates multiple information systems within the power grid, then models the power outage plans of the main grid and distribution network with the goal of minimizing the planned outage amount for users, then uses an improved epsilon constraint method and fuzzy multi-weight technology to determine the optimal outage plan, and finally realizes the process-oriented management of the main grid outage plan and the intensive management of the distribution network outage plan in terms of functionality.

[0081] One embodiment of the present invention provides an integrated power outage management and control platform for main and distribution networks based on optimal maintenance plans, such as... Figure 2 As shown. The management and control platform includes:

[0082] The system integration module is used to acquire data from the main grid OMS system, distribution network OMS system and PMS system within the power grid, and to complete the information system integration;

[0083] The function module is used to analyze the power outage plans of the main grid and distribution network, and to build a function model with the optimization objective of minimizing the planned power outage amount for users;

[0084] The power outage planning module is used to derive the optimal Pareto front set considering both the main grid and distribution network power outage plans based on the function of minimizing the planned power outage amount of users. It uses the improved epsilon constraint method and the fuzzy multi-weight technique to obtain the optimal power outage plan.

[0085] The power outage management module is used to achieve process-oriented management of main grid power outage plans and intensive management of distribution network power outage plans based on the optimal power outage plan.

[0086] Figure 3 This document presents a flowchart of the streamlined management process for main grid power outage plans during implementation. The user interface includes scheme management and basic information maintenance: after inputting basic information such as main grid and distribution network structure information, equipment information, and power outage plan evaluation criteria into the platform, initial settings are performed. Report management includes plan submission management and plan execution management: after production units submit their plans, management personnel review and issue them online. Information management includes system settings and statistical analysis. Statistical analysis includes archiving analysis, which ensures that maintenance plan operation tickets, maintenance plans, and maintenance personnel are archived and searchable within the system, while the analysis module description remains unchanged. The analysis module can analyze and display power outage plans at different time levels in various forms, including images or lists, based on content or power outage indicators. Content can include equipment type, number of outages, outage category, maintenance category, maintenance personnel or teams, etc.; power outage indicators can include annual outage time, average number of outages, recurring outage rate, unplanned outage rate, etc.

[0087] The centralized management of power outage plans in the distribution network includes functions such as unified application for cross-regional power outage maintenance, unified work permits, and unified equipment maintenance management, which solidifies the power outage planning process system and significantly reduces temporary and repeated power outages.

[0088] This invention enables lean management and control of the entire process of power outage planning for both the main grid and distribution network. It demonstrates that the method provides an integrated power outage management platform for the main grid and distribution network that considers the optimal maintenance plan. Based on the existing main grid OMS system, distribution network OMS system, and PMS system, it uses data bus technology to achieve the integration of underlying data and services. It can analyze the power outage plans of the main grid and distribution network, select the optimal power outage plan, promote the homogenization of power outage plans at different network levels, and improve the efficiency and management level of power outage management.

[0089] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A method for integrated power outage control of main and distribution networks based on optimal maintenance plans, characterized in that, Includes the following steps: Acquire data from the main grid OMS system, distribution network OMS system, and PMS system within the power grid to complete information system integration; Analyze the power outage plans of the main grid and distribution network, and build a function model with the optimization objective of minimizing the planned power outage amount for users; Based on the function with the optimization objective of minimizing the planned outage amount for users, an improved epsilon constraint method is used to derive the Pareto front set considering the optimal outage plans for both the main grid and distribution network. Then, fuzzy multi-weighting techniques are used to obtain the optimal outage plan. Specific steps include: using function normalization to normalize the distribution network optimization function and the main grid optimization function to the same order of magnitude; calculating the Pareto front sets of the minimum planned outage amount for users considering both the main grid maintenance plan and the distribution network maintenance plan; and using fuzzy multi-weighting methods to evaluate the relative importance of the weights before and after the distribution network maintenance plan and the main grid maintenance plan, ensuring that both the main grid and distribution network maintenance plans are simultaneously optimized. Based on the optimal power outage plan, the system achieves process-oriented management of main grid power outage plans and intensive management of distribution network power outage plans.

2. The integrated power outage control method for main and distribution networks based on optimal maintenance plans according to claim 1, characterized in that, The data from the main grid OMS system, distribution network OMS system, and PMS system within the power grid include power grid topology, equipment telemetry and remote sensing data, and outage range information.

3. The integrated power outage control method for main and distribution networks based on optimal maintenance plans according to claim 1, characterized in that, The function model with minimizing the planned user power outage as the optimization objective is as follows: ； In the formula, To minimize planned power outages for users, Let the total power outage amount be the amount of electricity lost after the planned power outage for the i-th user is executed. Let be the total power outage power after the planned power outage for the i-th user is executed. Let n be the total planned power outage time, and n be the total number of users within the planned power outage area.

4. The integrated power outage control method for main and distribution networks based on optimal maintenance plans according to claim 1, characterized in that, The aforementioned function normalization method normalizes the distribution network optimization function and the main network optimization function to the same order of magnitude, specifically as follows: ； ； In the formula, It is the optimal value of the distribution network optimization function. It is the optimal value of the mainnet optimization function. These represent the operating parameters that allow the distribution network to achieve its optimal values. These represent the operating parameters when the mainnet achieves its optimal value.

5. The integrated power outage control method for main and distribution networks based on optimal maintenance plans according to claim 1, characterized in that, The Pareto frontier set for the minimum planned user outage power specifically includes: ； ； ； ； In the formula, These are the upper, middle, and lower constraint values ​​of the objective function value at the k-th iteration. These are the minimum, average, and maximum values ​​of the objective function on the Pareto front set, respectively.

6. The integrated power outage control method for main and distribution networks based on optimal maintenance plans according to claim 1, characterized in that... The optimal representation of the main and distribution network maintenance plan is as follows: ； In the formula, For the optimal power outage plan, Let be the optimal value for the i-th maintenance method. The objective function value after k iterations of the fuzzy weighting method for the i-th maintenance method.

7. The integrated power outage control method for main and distribution networks based on optimal maintenance plans as described in claim 1, characterized in that, The standardized management process for the main grid power outage plan includes scheme management and basic information maintenance, plan application management, Archiving and statistical analysis; the centralized management of power outage plans in the power distribution network includes functions such as unified application for cross-regional power outage maintenance, unified work permits, and unified equipment maintenance management.

8. A main and distribution network integrated power outage management and control platform based on optimal maintenance plans, characterized in that, The control platform includes: The system integration module is used to acquire data from the main grid OMS system, distribution network OMS system and PMS system within the power grid, and to complete the information system integration; The function module is used to analyze the power outage plans of the main grid and distribution network, and to build a function model with the optimization objective of minimizing the planned power outage amount for users; The power outage planning module is used to derive the optimal Pareto front set considering both the main grid and distribution network power outage plans based on a function with the optimization objective of minimizing the planned outage amount for each user. It employs an improved epsilon constraint method and then uses fuzzy multi-weighting techniques to obtain the optimal power outage plan. Specific steps include: normalizing the distribution network optimization function and the main grid optimization function to the same order of magnitude using a function normalization method; calculating the Pareto front sets of the minimum planned outage amount for each user considering both the main grid maintenance plan and the distribution network maintenance plan; and evaluating the relative importance of the weights of the distribution network maintenance plan and the main grid maintenance plan using a fuzzy multi-weighting method to ensure that both the main grid and distribution network maintenance plans are simultaneously optimized. The power outage management module is used to achieve process-oriented management of main grid power outage plans and intensive management of distribution network power outage plans based on the optimal power outage plan.

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