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A Mode of Dynamic Security Evaluation of Electric Power System Based on Vulnerability Index

GUO Qi,DENG Hui-qiong  
For realizing effective dynamic security evaluation aim of electric power system,a mode of dynamic security evaluation based on vulnerability is proposed in the paper,the mode is based on the electric power system's operational condition under which there are no faults happening.A series of vulnerability indices are defined for assessing the electric power system security.These vulnerability indices include the set of vulnerable circuits in the course of power flow varying caused by disturbances,the possibility of transient instability and the possibility of cascading outages by assuming the electric power system suddenly subject to a possible fault under its real operational condition,in the mode,the current condition of electric power system is obtained by taking advantage of wide area measurement system which can reflect the real scenario of the electric power system,and the mode can help to find the vulnerabilities of electric power system as early as possible because it is performed according to the operational condition,so the mode of dynamic assessment is applicable.
【CateGory Index】: TM711
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