超高压电容器结构抗震性能分析

Seismic Analysis and Assessment of EHV Capacitor Device Structure

超高压电容器装置结构是电力系统重要组成部分,其上重下轻、阻尼比小的结构特点不利抗震.本文采用大型通用有限元程序ANSYS,对该结构进行了模态分析和谱分析,结构基频较低约1.02Hz.对结构在自重作用、X与Y向地震作用、X与Y向风荷载作用下进行计算分析,得出以下主要结论:各部件的最大应力均小于规范要求;台架梁的最大相对变形为1/2671,小于规范值1/400;结构满足8度抗震设防要求.

EHV Capacitor device structure is an important component in the electric power system.The structure has high gravity center and low damping ratio,thus its seismic behavior is impacted sensitively by the special structural form of the device.In this paper,the modal analysis and spectrum analysis of the EHV Capacitor device structure were conducted by the software ANSYS.Its first modal frequency is about 1.02Hz.The seismic responses of the structure were analyzed under the gravity action,earthquake action in X/Y direction and wind load in X/Y direction.The main conclusions can be obtained： the values of the maximum stresses of all components are lower than the standard＇s requirement;the maximum relative deflection of the beam,1/2671,is lower the standard＇s requirement（1/400）;the structural behavior satisfies the requirement of the eight intensity seismic design.