GIS设备内部缺陷的新型超声诊断技术  

A New Ultrasonic Diagnosis Technology for Internal Default of GIS Equipment

作　　者：方庆[1] 刘卫东[1] 邓维[1] 唐信[1] 

机构地区：[1]湖南省电力公司超高压管理局,湖南长沙410015

出　　处：《高压电器》2008年第6期589-591,595,共4页High Voltage Apparatus

摘　　要：笔者归纳总结了GIS设备的内部故障,简要说明了超声诊断原理及新型GIS超声绝缘测试仪在超声诊断中的应用,重点介绍了基于缺陷测量特征的新型超声诊断技术以及国内外的诊断经验。现场实际测量表明,基于测量特征的超声诊断技术对自由颗粒、振动、悬浮电位等GIS设备内部缺陷产生的局放信号进行分析,具有较高灵敏度而且能对壳体上和导体上的缺陷进行定位的特点。This paper summarizes the internal faults of GIS equipment, describes the principle of ultrasonic diagnosis, and introduces the application of a new GIS ultrasonic insulation measuring device in ultrasonic diagnosis. It lays emphasis on a new fault measuring characteristics based ultrasonic diagnosis technology for internal default of GIS equipment as well as the application experience both at home and abroad. Field diagnostic results demonstrate that this new technology is highly sensitive to the partial discharge signals caused by free particles, vibration, floating potential, etc. in GIS equipment, and it can locate the faults on shell and conductor.

关 键 词：全封闭组合电器 局部放电 内部缺陷 超声诊断 

分 类 号：TM595[电气工程—电器]