DEMATEL-ANP-VIKOR mixed selection method of power system security risk reduction schemes

Abstract

The invention provides a DEMATEL-ANP-VIKOR mixed selection method of power system security risk reduction schemes. The method comprises the steps of 1) establishing an evaluation index system, 2) establishing the influence relation structure matrix of target layer elements by use of a DEMATEL method, 3) determining each index weight of a criterion layer by use of an ANP method, 4) ranking the security risks of a decision layer by use of a VIKOR method to obtain compromise power system security risk reduction schemes, and 5) selecting the schemes. The DEMATEL-ANP-VIKOR mixed selection method of the power system security risk reduction schemes has the advantages that an interactional restrictive relation between influence factors is taken into full account, and a compromise planning method is taken as the core to provide the optimal rank of the maximum community benefit and minimum individual regret compromise alternative schemes, and consequently, the compromise feasible risk settling schemes closest to the ideal solution are obtained.

Description

technical field [0001] The invention relates to a mixed decision-making method, in particular to a DEMATEL-ANP-VIKOR mixed selection method for reducing power system safety risks. Background technique [0002] The power industry is the center of gravity of the country's energy sector. In recent years, major safety accidents in the power system have occurred continuously, making its safety problems increasingly severe. Security risk assessment is an important part of security-critical technology. Through effective assessment, we can more comprehensively understand the risk points and risk levels of the power system, and strengthen the security measures and prevention of the power system in a targeted manner, so as to improve the overall security of the power system. . [0003] Power system security risk assessment is currently mainly divided into three categories: qualitative assessment methods, quantitative assessment methods, and qualitative and quantitative assessment met...

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Problems solved by technology

[0008](1) It is considered that the influencing factors are independent of each other, and the mutual influence and restriction relationship between risk indicators is rarely considered;

[0009](2) The solution to risk assessment either only considers the overall satisfaction of each indicator (ie, the maximum group benefit), or only considers the degree of regret caused by choosing the wrong solution (Minimize individual regret), can not get an ideal and feasible evaluation plan

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