气体绝缘开关设备中特快速瞬态过电压研究的新进展  

Recent Progress in Investigations on Very Fast Transient Overvoltage in Gas Insulated Switchgear

作　　者：陈维江[1] 颜湘莲[2] 王绍武[1] 王承玉[2] 李志兵[2] 戴敏[3] 李成榕[4] 刘卫东[5] 陈海波[1] 张乔根[6] 魏光林 张猛 

机构地区：[1]国家电网公司,北京市西城区100031 [2]中国电力科学研究院,北京市海淀区100192 [3]国网电力科学研究院,湖北省武汉市430074 [4]华北电力大学,北京市昌平区102206 [5]清华大学,北京市海淀区100084 [6]西安交通大学,陕西省西安市710049 [7]河南平高电气股份有限公司,河南省平顶山市467001 [8]西安西电电气股份有限公司,陕西省西安市710077

出　　处：《中国电机工程学报》2011年第31期1-11,共11页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2011CB209405);国家电网公司科技项目(SGKJJSKF[2009]776)~~

摘　　要：气体绝缘开关设备(gas insulated switchgear,GIS)中的隔离开关操作空载短母线会产生陡波前、高幅值的特快速瞬态过电压(very fast transient overvoltage,VFTO)、瞬态壳体电位和电磁干扰,对GIS及其连接的具有绕组的设备、与壳体连接的二次设备绝缘产生危害,干扰二次设备工作,严重影响设备的安全运行。对2009年前国内外在VFTO测量方法、特性试验、数字仿真和对绝缘影响以及外部VFTO方面的研究状况进行了综述。概要总结了国家电网公司在特高压GIS中VFTO实测及仿真研究方面取得的新进展,提出了特高压GIS中VFTO需要深化研究的内容,即重点关注VFTO的传播特性与仿真建模,VFTO下的绝缘特性和机制研究,以期全面掌握特高压GIS中VFTO特性,对特高压输变电设备的研制、工程设计和运行提供依据和有益的参考。Very fast transient overvoltage（VFTO）,transient enclosure voltage（TEV） and electromagnetic interference（EMI） with steep wave-front and high amplitude are generated during switching of disconnector in gas insulated switchgear（GIS） with no-load short busbar.The transient voltages cause high stress on the insulation of GIS,equipment connected to GIS and electronic devices connected to GIS enclosure.And the operation of electronic devices is interfered by EMI.VFTO and associated effects have seriously affected the safety operation of equipment in GIS substations.To guide the equipment development and engineering design for ultra high voltage（UHV） transmission systems in China,the achieved results before 2009 on VFTO measurement,characteristics test,digital calculation and its impact on insulation were summarized in the paper.And the achievements on measurement and simulation of VFTO within UHV GIS by State Grid Corporation of China were described.Finally some subjects of VFTO in UHV GIS to be deeply studied were proposed.The transmitting characters and simulation model of VFTO should be emphasized,including the insulation properties and its mechanism under VFTO.All the achievements provide important reference to master thoroughly the characteristics of VFTO in UHV GIS and to guide the switching of GIS.

关 键 词：特高压 气体绝缘开关设备 特快速瞬态过电压 暂态壳体电位 隔离开关 电磁干扰 

分 类 号：TM85[电气工程—高电压与绝缘技术]