Electric power system vulnerability assessment method

Abstract

The invention discloses an electric power system vulnerability assessment method, and relates to the field of a power network safety analysis technology. The electric power system frangibility assessment method comprises the following steps: (1), establishing a complex network structure of an electric power system; (2), establishing a structure vulnerability factor indicator through electrical betweenness in the complex networks structure; (3), obtaining network real-time trend data through a static energy function method; (4), calculating a state vulnerability factor, and calculating to obtain an integrated vulnerability assessment indicator through combination with a structural vulnerability factor in step (2); and (5), outputting a vulnerable area of the electric power system. According to the invention, since the electric power system vulnerability assessment method analyzes vulnerable links which may exist in the electric power system from a global perspective, the vulnerable area in the operation of the electric power system can be comprehensively, accurately and effectively determined, the defects of a conventional single one-sided electric power system vulnerability assessment method and the like can be made up for, emphases are provided for prevention and control of safe operation of the electric power system, and collapse of the electric power system, caused by disturbance or accidents, is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of power grid security analysis, in particular to a power system vulnerability assessment method. Background technique [0002] The concept of vulnerability originates from the fields of environment, ecology, computer network, etc. It describes that the system and its components are easily affected and destroyed, and lack the ability to resist interference and restore the initial state. Power system vulnerability is a new concept proposed for power system security and reliability in recent years, and there is no generally accepted definition and unified analysis standard yet. However, from the existing references, power system vulnerability is used to describe the system's ability to withstand disturbance or failure under normal operation or various random factors, as well as the possible trend and impact of the system's failure to maintain normal operation. [0003] In the initial stage of a large-scale bl...

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Problems solved by technology

[0005] At present, the biggest problem encountered when establishing the vulnerability assessment index of the power system is: when establishing the index for the real-time operation parameters of the power system or its own inherent network topology, often only one of the real-time operation or the topological structure can be considered. 1. Unable to comprehensively identify vulnerable areas in the power system

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