Reliability Evaluation Model of Power Grid Considering the Structural Reliability of Tower under Earthquake Conditions

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Zhang, Yagang^1 ; X., Kang ; X., Zhang ; M., Guo ; Y., Xu

Shanxi Key Laboratory of Smart Grid, Xi'An Jiaotong University, Xi'an, China^1

关键词: Approximate analysis;    Finite element simulations;    Reliability Evaluation;    Seismic disaster;    Seismic intensity;    Seismic Performance;    Structural problems;    Structural reliability;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012015/pdf
DOI  :  10.1088/1757-899X/486/1/012015

来源: IOP

【 摘 要 】

The seismic disaster will cause serious damage to the power system. At present, the reliability evaluation of the power grid under earthquake conditions is mainly subjected to the approximate analysis of seismic performance, and the approximate analysis results can not meet the actual needs. In this paper, a reliability evaluation model of Power Grid considering the structural reliability of tower under earthquake conditions is proposed. The structural problems of tower and cable are analyzed directly by finite element simulation. The failure rate of transmission line is calculated by the structural reliability of tower and cable. After obtaining the reliability data of transmission line, the reliability of the power system under various seismic intensities is evaluated. Finally, the influence of the location of seismic source on the reliability of power system is analyzed. The results of the example analysis verify the accuracy and practicability of the proposed model and provide a reference for improving the seismic performance of the power system.