特高压主变压器随机地震响应敏感性分析

Through the sensitivity analysis, the parameters which have great influence on the random seismic response of the main transformer are found, which can provide reference for seismic design and subsequent seismic vulnerability analysis. In this paper, based on SAP2000, the finite element model of the main transformer is constructed and the seismic response is calculated. The sensitivity of the parameters is analyzed by mutual information method and partial rank correlation method respectively. The results show that the order of sensitivity of the parameters obtained by the two methods is the same, PGA is the most influential parameter on the random seismic response of the main transformer, and the length of high voltage bushing H_l, density of high voltage bushing D_c, equivalent stiffness coefficient of flange section F_r, intrinsic weight B_w and input direction also have a certain influence, while other parameters have little influence on the random seismic response of the main transformer.