摘要
笔者结合实际工作中发现的一起GIS电缆终端典型局放异常事例,介绍了采用高频、特高频等局放检测手段对局放源进行初步定位,利用高速采集示波器通过读取脉冲时延的方法对局放源进行精确定位,并在实验室对局放检测与定位结果进行了验证,最终应用CT扫描的方法准确地查找到GIS电缆终端存在的气隙缺陷。
Taking a typical partial discharge（PD）fault at a GIS cable terminal for example,the high frequency and ultra-high frequency PD detection methods as well as other approaches are adopted to preliminarily position the partial discharge source, then the source is accurately positioned by reading the pulse delay on a high-speed acquisition oscillograph. This positioning method is verified by experiment. Subsequently, the air-gap defect in the GIS cable terminal is detected accurately via CT scanning.
出处
《高压电器》
CAS
CSCD
北大核心
2014年第3期44-49,57,共7页
High Voltage Apparatus
