1000kV高压并联电抗器故障原因分析  

Fault Analysis of 1000kV High Voltage Shunt Reactor

作　　者：秘立鹏 段子靖 赵影 赵建华 MI Lipeng;DUAN Zijing;ZHAO Ying;ZHAO Jianhua(State Grid Eastern Inner Mongolia Electric Power Research Institute, Hohhot 010070, China;UIanqab Electric Power Bureau, UIanqab 012000, China;Beijing Energy Logistics and Services Company Limited, Hohhot 010020, China)

机构地区：[1]国网内蒙古东部电力有限公司电力科学研究院,呼和浩特010070 [2]乌兰察布电业局,内蒙古乌兰察布012000 [3]京能电力后勤服务有限公司,呼和浩特010020

出　　处：《内蒙古电力技术》2018年第2期79-81,共3页Inner Mongolia Electric Power

摘　　要：在某特高压变电站2017年年度检修中,发现该站某1000 kV并联电抗器X柱夹件对地绝缘电阻低于1000 kΩ。通过不吊罩和吊罩内检,确定原因为X柱器身下部减振胶垫受压变形与两柱器身连接处的三角铁加强板接触,导致并联电抗器X柱夹件对地绝缘电阻偏低。将短路点处理后,对并联电抗器抽真空、注油,后续试验显示并联电抗器绝缘性能良好,可以正常投入使用。In the annual overhaul of a1000kV shunt reactor in a UHV substation,it was found that the insulation resistance of X-pillars to ground was lower than1000kΩ.Through the internal inspection of the hood and the internal inspection without hanging hood,it was determined that the reason was that the lower cushion of the X-pillar body was in contact with the triangular iron reinforcement plate connected to the two-column body,resulting in the insulation of the X-pillar clamp of the shunt reactor.The resistance was low.After the short-circuit point was processed,the shunt reactor was evacuated and filled with oil.Subsequent tests showed that the shunt reactor had good insulation properties and could be put into use normally.

关 键 词：高压并联电抗器 夹件 对地绝缘电阻 短路 

分 类 号：TM472[电气工程—电器]