GIS局部放电检测与定位技术的现场应用  

Field application of partial discharge testing and positioning technology for GIS

作　　者：徐敏骅[1] 吴晓春[2] 陆振华[1] 

机构地区：[1]上海交通大学,上海200062 [2]上海市电力公司超高压输变电公司,上海200063

出　　处：《华东电力》2009年第7期1086-1089,共4页East China Electric Power

摘　　要：介绍了目前常用的GIS正常运行条件下局放在线检测的超声波法和超高频法的检测原理,并在此基础上提出声电联合检测技术,现场应用情况表明,声电联合法通过同时检测局部放电信号的UHF信号和超声信号,能更加有效地排除现场电量干扰,发现运行中GIS的绝缘缺陷,并结合上海超高压输变电公司的实际生产应用实例,介绍了声电联合检测技术的应用,GIS设备的局部放电检测可为GIS的状态检修提供可靠的数据。The theory of the ultrasonic method and the ultra-high-frequency （UHF） method applied to on-line partial discharge （PD） testing for GIS under normal operation was presented, and based on that an electrical and ultrasonic combined method for testing was proposed. Field application showed that the combined method can be used to simultaneously test the UHF signal and ultrasonic signal from the PD signal, which can more effectively exclude field disturbance to detect the insulation faults of GIS. During the test, the UHF method was first used for primary PD positioning, and then the combined method was applied for accurate positioning. Application of the method by Extra High Voltage Power Transmission Company of SMEPC was presented.

关 键 词：GIS 局部放电 超高频法 超声波法 声电联合法 

分 类 号：TM835[电气工程—高电压与绝缘技术]