220 kV GIS隔离开关局部放电故障分析  

Analysis on a Partial Discharge Fault of 220 kV GIS Isolation Switch

作　　者：王政 杨洋 刘立群 王晓瑞 WANG Zheng;YANG Yang;LIU Liqun;WANG Xiaorui(Binzhou Power Supply Company,Binzhou 256600)

机构地区：[1]国网山东省电力公司滨州供电公司,山东滨州256600

出　　处：《电力安全技术》2024年第10期56-59,共4页Electric Safety Technology

摘　　要：介绍了一起220kV GIS隔离开关局部放电故障情况,经特高频、超声波局部放电检测初步判断隔离开关内部存在悬浮放电,为进一步确定放电原因,对该隔离开关进行返厂解体检查,确定该次故障原因为拐臂盒传动轴插头、绝缘扭杆上端插槽尺寸不符合标准,部件接触不良,导致悬浮放电,并针对此次缺陷提出了防范处理措施。A partial discharge fault of 220 kV GIS isolation switch is introduced.Suspended discharge is found in the isolation switch via ultra-high frequency and ultrasonic partial discharge detection.In order to further determine the cause of discharge,the isolation switch is disassembled for factory inspection.It shows the fault is brought about due to unqualified dimensions of arm box drive shaft plug and upper end slot of insulation torsion bar and poor contact of parts,which leads to the suspended discharge,and the corresponding prevention and treatment countermeasures are put forward.

关 键 词：GIS设备 隔离开关 局部放电 故障分析 

分 类 号：TM564.1[电气工程—电器]