Aseismic Design Idea Based on Probabilistic Seismic Risk Analysis Method of the Power Transformation Equipment

Studying seismic ability and influencing factors of the power transformation equipment basing on total probabilities theory that is to suitably assess aseismic safety and damage by the future earthquake. The paper detailed analyses seismic design ideas of the power transformation equipment in China and used reliability method to discuss three backbone contents about earthquake motion, equipment seismic demand and equipment seismic ability. Thereby, a seismic risk analytic technique suiting for the power transformation equipment was built. Finally, a 500-kV porcelain post insulator was choosing to study the seismic fragility curve and seismic risk curve. The seismic risk analytic technique can estimate transformer substation earthquake damage and prevent and supply scientific basis for fight natural adversities.