Analysis on the seismic energy dissipation response of the 500kV metallic oxide lightning arrester

Abstract

The 500kV metallic oxide lightning arrester is a piece of porcelain electrical equipment and easy to be damaged under severe earthquake, because the equipment is made of brittle materials and can only subject to limited earthquake action. Damping devices can be mounted onto the porcelain electrical equipment to protect the equipment by absorbing large amaunt of earthquake energy. On that type of lightning arrester added with damping devices, the analyses of the seismic energy dissipation response of the equipment are carried out at diff erent levels of seismic fortification intensity using the finite element analysis program ANSYS. At the same time, a contrast analysis on the seismic responses of anti-seismic and seismic energy dissipation of the lightning arrester was conducted. The results of the analysis showed that the arrester with damping device had good damping effect and it could be referred by the practical application of engineering projects.

Progress in Seismic Research on Electrical Equipments in Substations

“…Both response spectrum method and time history analysis method can be adopted for the seismic analysis of electrical equipments [12,13]. For equipments which are cylinder in shape, stress and displacement response is key to the seismic performance.…”