2019•2019 IEEE Sustainable Power and Energy Conference (iSPEC)Requires access
Vulnerability Assessment Based on Operational Reliability Weighted and Preventive Planning
Ning Qi, Lin Cheng, Yi Jiang, Jinshan Luo, Ke Sun, Dan Wang, Weiyuan Wang, Wentao Sun
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Abstract
Vulnerability assessment is the key to the security and stability analysis of power system. During the operation of power grid, the fault risk of electrical equipment is not fixed because of the influence of system operating conditions, operating environment and equipment itself, so the vulnerability of power system will also be changeable. Based on the existing research results of complex network theory, a vulnerability assessment method considering operational reliability is proposed in this paper. Firstly, the basic idea of reliability weighted vulnerability assessment is introduced. Then HITS algorithm and PageRank algorithm will be used to analyze the basic vulnerability of power grid topology. Moreover, the vulnerability index of power grid considering reliability weighted is calculated. Finally, numerical analysis focusing on the difference between basic and improved assessment method is tested in IEEE RTS-79 system, and the preventive planning suggestions will be given based on the vulnerability assessment results.