500kV特高频暂态过电压的应对措施  

Research on methods against very fast transient over-voltage in the 500 kV grid dispatching of East China

作　　者：吕闻[1] 唐陇军[1] 杨凌辉[2] 

机构地区：[1]华东电力调度交易中心,上海200002 [2]华东电力试验研究院,上海200437

出　　处：《华东电力》2006年第4期20-22,共3页East China Electric Power

摘　　要：由500 kV G IS隔离闸刀操作而引起的特高频暂态过电压(VFTO)是大电网安全运行的重要隐患之一。通过EMTP软件仿真和华东天荒坪抽水蓄能电厂现场实测,研究了VFTO产生的原因与机理,讨论了现有的VFTO应对措施,首次提出了不改造现有设备的条件下,减少VFTO及其影响的电气调度操作的反措方法,并通过运行实践验证了反措的有效性。VFTO is one of the most important hidden troubles in modem grid caused by operations of 500 kV GIS disconnecting switch. This paper analyses VFTO＇ s origin and mechanism by using EMTP program and actual measures of operational sites. The paper also describes the existing methods against VFTO focusing on facilities reconstruction and compares their effects with each other. Furthermore the paper introduces a new method to decrease VFTO where facilities reconstruction is not necessary. Practices proved that the new way is effective.

关 键 词：气体绝缘组合电器 快速暂态过电压 措施 

分 类 号：TM864[电气工程—高电压与绝缘技术]