1100kV瓷套式避雷器减震体系抗震安全性能评估  

Seismic Safety Performance Evaluation of 1100 kV Porcelain Arresters with Dampers

作　　者：张雪松[1] 艾晓秋[2] 代泽兵[1] 

机构地区：[1]中国电力科学研究院,北京100055 [2]同济大学上海防灾救灾研究所,上海200092

出　　处：《高压电器》2014年第6期1-6,12,共7页High Voltage Apparatus

基　　金：中国电力科学研究院院士基金(GC82-09-001);国家电网基金项目(SGKJJSKF(2008)466)~~

摘　　要：给出了基于随机地震动模型的1100 kV瓷套式避雷器减震体系的抗震安全性能评估的方法。通过建立安装新型铅金属减震器前后1100 kV瓷套式避雷器的有限元分析计算模型,分析了该设备减震体系的动力特性。利用随机地震动模型合成的人工随机地震波对该设备及其减震结构进行了时程分析,得到其随机地震响应的均值和标准差;再根据一次二阶矩理论计算得到该减震体系的抗震安全系数和Ⅱ类场地土条件下的震害率曲线。计算结果表明:安装新型铅金属减震器后1100 kV瓷套式避雷器抗震等级可提高一级。A seismic safety performance evaluation method for 1100kV porcelain arresters with dampers is put forward based on the stochastic earthquake model. The dynamic performances of 1100kV porcelain arresters with and without the new type lead dampers are analyzed by establishing corresponding finite element models. And the mean and standard deviations of the random seismic responses of the arresters with and without the new type lead dampers under artificial seismic waves synthesised by the stochastic earthquake model are gained. Then the seismic assurance coefficient of the arresters is calculated by FOSM, and the fragility curves of the arresters on second-class site are achieved. Evaluation results show that the anti-seismic fortification grade of 1100kV porcelain arresters with the new type lead dampers can be increased by one rank.

关 键 词：1100kV瓷套式避雷器 动力特性 新型铅金属减震器 随机地震动模型 抗震安全性能评估 

分 类 号：TM862[电气工程—高电压与绝缘技术]