UHF法在GIS局放现场检测中的故障识别  

UHF Method Application in Fault Recognition on GIS PD Detection

作　　者：纪巍 王琪[2] 左秀江 胡全义 党乐 

机构地区：[1]国网内蒙古东部电力有限公司电力科学研究院,呼和浩特010020 [2]内蒙古电力科学研究院,呼和浩特010020

出　　处：《内蒙古电力技术》2016年第2期74-76,共3页Inner Mongolia Electric Power

摘　　要：采用特高频(UHF)法分析了某变电站封闭式组合电器(GIS)典型局放异常信号图谱,初步判断某TV间隔接地刀闸气室下侧盆式绝缘子内部气隙放电,结合超声波、SF_6气体分析等检测方法确定了故障类型,最后采用其他局放检测仪器再次进行检测,验证了结论的正确性。通过检测结果对比,相较于超声波局放检测方法,UHF法具有较高灵敏度,尤其适用于绝缘类缺陷检测,在GIS现场带电检测中具有较高实用价值。This paper analyzed a substation GIS typical PD abnomal signal spectrum by ultra high frequency（UHF）,preliminary judgment internal air gap discharge in a switching interval grounding switch chamber side insulator.Combined with ultrasonic and SF_6 gas analysis etc.to identify the fault type,finally used other PD detection instrument for detecting,verified the reliability of the conclusion.By comparing with the ultrasonic partial discharge detection,the UHF method had high sensitivity,and was sensitive to insulation defects,it had high practical value in the GIS live detection.

关 键 词：特高频 超声波 局部放电 GIS 带电检测 故障识别 

分 类 号：TM835[电气工程—高电压与绝缘技术]