摘要
通过对35 k V开关柜进行带电测试,发现柜内存在局部放电。利用特高频及高频传感器进行准确定位,停电检查后发现开关柜中穿柜套管的等电位接触不良造成悬浮放电。针对开关柜的结构设计缺陷,采取改变等电位连接的方式,并提出了针对此类缺陷的防范措施。
The partial discharge was found in a 35 kV switchgear when the online detect was conducted. By using UHF and HF methods, the defect was loeated accurately that a suspended discharge occurred caused by potential poor contact on the wall bussing, which was confirmed by off-line examination. Aiming at structural design defects of switchgear, the equal potential connecting structure was changed, and preventive measures were proposed to against such defects.
作者
隋恒
董万光
陈芳
孙圣凯
郭晓飞
SUI Heng DONG Wangang CHEN Fang SUN Shengkai GUO Xiaofei(State Grid Liaocheng Power Supply Company, Liaocheng 252000, Chin)
出处
《山东电力技术》
2016年第10期78-80,共3页
Shandong Electric Power
关键词
开关柜
局部放电
接触不良
switchgear
partial discharge
poor contact