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Power network key node identification method based on multi-attribute decision

A multi-attribute decision-making and key node technology, applied in the direction of instruments, complex mathematical operations, data processing applications, etc., can solve problems such as large-scale cascading failures, successive failures of other nodes, etc., to improve reliability, avoid shortages, and reduce occurrences The effect of probability

Pending Publication Date: 2022-04-01
SHENZHEN POWER SUPPLY BUREAU
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AI Technical Summary

Problems solved by technology

Research in recent years has found that when some key links (power stations, substations, and transmission lines) fail in the operation of the power grid, a series of chain reactions will be caused, causing other nodes to fail one after another, and eventually leading to large-scale cascading failures.

Method used

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  • Power network key node identification method based on multi-attribute decision
  • Power network key node identification method based on multi-attribute decision
  • Power network key node identification method based on multi-attribute decision

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Embodiment Construction

[0075] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0076] like figure 1 As shown in FIG. 1 , it shows a schematic diagram of the main flow of an embodiment of a method for identifying key nodes of a power network based on multi-attribute decision-making provided by the present invention. combined Figure 2 to Figure 5 As shown, in this embodiment, the method at least includes the following steps:

[0077] Step S10, based on complex network theory, establish an abstract topological network of the power grid, and obtain parameter information of the topological network; specifically, as image 3 Shown, shows a kind of IEEE-39 node system diagram; And Figure 5 That is, using the complex network theory, the image 3 The topological network diagram obtained by abstracting the IEEE-39 node system in .

[0078] Step...

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Abstract

The invention discloses a power network key node identification method based on multi-attribute decision. Comprising the following steps: step S10, establishing an abstract topology network of a power grid; step S11, performing evaluation according to the power grid key node comprehensive evaluation index system; step S12, determining each index weight value based on each node index value; and step S13, performing comprehensive sorting on each index based on comprehensive approximation ideal sorting of a multi-attribute decision, and identifying the key nodes of the power grid. According to the method, the nodes are comprehensively evaluated from multiple angles, the weighting method combining subjective weighting and objective weighting is adopted, the defects of a single attribute and subjectivity of weighting are avoided, the sorting result is more reliable, and the method is of great significance in improving the reliability of a power system and reducing the probability of occurrence of large-scale power outage accidents.

Description

technical field [0001] The invention relates to the technical field of power system protection and operation analysis, in particular to a method for identifying key nodes of a power network based on multi-attribute decision-making. Background technique [0002] With the development of the economy and the progress of the society, the scale and power generation of power networks in countries around the world are increasing, and large-scale power grid cascading failures occur frequently, which has a bad impact on the national economy and residents' lives. As the key infrastructure of the country, the power system requires a high degree of stability and continuity in power supply. Studies in recent years have found that when some key links (power stations, substations, and transmission lines) fail in the operation of the power grid, a series of chain reactions will be caused, causing other nodes to fail one after another, and eventually leading to large-scale cascading failures....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F17/12G06F17/16G06F17/18
Inventor 翁毅选程韧俐马伟哲程维杰何晓峰郑晓辉吴新卢艺陈洪云谷若雨
Owner SHENZHEN POWER SUPPLY BUREAU
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