摘要
笔者通过局部放电超高频检测、缺陷定位、模式识别以及解体等,分析了一起组合电器GIS盆式绝缘子内部气隙缺陷,阐述了基于信号能量衰减法和到达时延法的缺陷精确定位过程,又根据超高频信号PRPD谱图特征对缺陷类型进行了识别,最后通过解体查找到了该内部气隙缺陷。
A defect of gas cavity in insulator of a gas insulated switchgear is analyzed by ultra-high frequency detection of partial discharge （PD）, location of defect, pattern recognition, disassembly and experiments. The accurate defect location based on the energy attenuation of frequency signal and the time delay of signal arrival is discussed. The defect type is recognized means of equipment ultra-high according to the characteristics of PRPD spectrum of the ultra-high frequency signal. Moreover, the defect of gas cavity in insulator is found out though disassembly.
出处
《高压电器》
CAS
CSCD
北大核心
2012年第9期112-116,共5页
High Voltage Apparatus
关键词
局部放电
绝缘子内部气隙
缺陷
partial discharge（PD）
gas cavity in insulator
defect
