高压隔离开关地震灾害评估

Seismic vulnerability assessment of high voltage disconnector switch

震害表明,电力系统在地震时破坏严重。如何预测地震中电气设备的损伤风险,是生命线工程领域的重要课题。进行了高压隔离开关的地震灾害评估。采用具有柔性节点的有限元法建立设备的模型,用弹性时程分析法进行了设备的地震反应分析,在此基础上,采用强度破坏指标,计算了设备的地震破坏概率。以GW 4-220高压隔离开关为例,进行了其地震灾害评估,绘制了震害率曲线,可用以预测该型号隔离开关的震害情况。

The damage of electrical system in earthquake is tremendous, so it is important to predict the vulnerability of electrical equipments subjected to earthquake loading. Seismic damage assessment of the high voltage disconnect switcb is conducted in this paper. The model is built applying the finite element method with flexible joints and the seismic response of the equipment is analyzed using time history method. On such basis, according to the intensity breakage index, the seismic damage rates are counted and the seismic fragility curves are presented. Then the seismic damage assessment of GW4 -220 disconnector switch is analyzed.