【摘要】 文章对局部放电脉冲激发的电磁波在气体绝缘金属封闭开关（ Ｇ Ｉ Ｓ）同轴线中的传播特性进行了理论分析，并在实验室 Ｇ Ｉ Ｓ母线上进行了实测。结果表明，高频电磁波在 Ｇ Ｉ Ｓ母线中的谐振现象为超高频法检测 Ｇ Ｉ Ｓ中局部放电提供了有利条件，同时，可利用电磁波的传播时间对局放源进行准确定位更多还原

【Abstract】 The propagation characteristics of the electromagnetic waves in GIS coaxial lines excited by partial discharge are analyzed in this paper and some experimental results obtained from the GIS setup in laboratory are presented. The results show that the high frequency resonant phenomena provide an effective means for detecting the partial discharge in GIS with the ultra high frequency method. Meanwhile the partial discharge source can be located according to the propagation time of the electromagnetic wave.更多还原