特高压直流隔离开关复合隔震技术研究

Research on composite isolation technology of UHVDC disconnector

特高压直流隔离开关是一种结构尺寸较大、重心较高、水平向柔度很大的电气设备,自振频率在1 Hz^10 Hz,与场地的特征周期很接近,在地震作用下很容易产生类共振,主要针对三柱型特高压隔离开关,考虑将摩擦滑板、普通叠层橡胶支座、粘滞流体阻尼器并联复合,对特高压直流隔离开关进行复合隔震设计,通过9度罕遇地震(0.62g)、9度多遇地震(0.14g)作用下的时程计算,分析其在地震作用下的响应。

UHVDC disconnector is a kind of electrical equipment with large structure size,high center of gravity and large horizontal flexibility,it is very close to the characteristic period of the site,and it is easy to produce quasi resonance under the earthquake action.In this paper,the friction slide plate,common laminated rubber bearing and viscous fluid damper are combined in parallel for the UHVDC disconnector.The composite isolation design is carried out under the action of 9 degree rare earthquake(0.62g)and 9 degree frequent earthquake(0.14g).The time history of the seismic response is analyzed.