Earthquake Simulation and Risk Assessment of Distribution Network
Zheng Guoxin1, Lei Xia1, Wang Xiang1, Luo Xiaochun2
1. College of Electrical and Electronic Information Xihua University Chengdu 610039 China; 2. Aba Power Supply Company State Grid Sichuan Electric Power Company Aba 602300 China
Abstract：The power system has been severely damaged in earthquake. The distribution network is more vulnerable to extreme natural disasters than the transmission network. Therefore, it is necessary to analyze the risk of distribution network in earthquake disaster. The ground motion intensity in a distribution network area is calculated by parameter attenuation equation of ground motion. The proportion of damaged equipment is obtained on vulnerability model of distribution network components. Based on Monte Carlo method, stochastic earthquake scenarios are simulated to get the contingency levels of distribution network equipment. Considering the topology and operation of the distribution network, the network centrality of the complex network theory is used to evaluate the damage of the distribution network, and the risk assessment of the distribution network after the random earthquake is carried out to identify the key equipment of the distribution network. Accordingly, the resistance of distribution network to earthquake disasters is improved. Taking the 10kV distribution network in Longmenshan fault zone as an example, the risk is evaluated in a stochastic earthquake simulation, which verifies the feasibility of the proposed method.
郑国鑫, 雷霞, 王湘, 罗小春. 地震灾害模拟及配电网的风险评估[J]. 电工技术学报, 2020, 35(24): 5218-5226.
Zheng Guoxin, Lei Xia, Wang Xiang, Luo Xiaochun. Earthquake Simulation and Risk Assessment of Distribution Network. Transactions of China Electrotechnical Society, 2020, 35(24): 5218-5226.
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