一起特高压GIS设备绝缘支撑筒局部放电异常分析与处理  

Analysis and Treatment of Abnormal Partial Discharge in a UHV GIS Insulated Support Tube

作　　者：刘咏飞 赵科 杨景刚 贾勇勇 马勇 施景垒 LIU Yongfei;ZHAO Ke;YANG Jinggang;JIA Yongyong;MA Yong;SHI Jinglei(State Grid Jiangsu Electric Power Co.,Ltd.,Research Institute,Nanjing 211103,China)

机构地区：[1]国网江苏省电力有限公司电力科学研究院,南京211103

出　　处：《高压电器》2020年第7期246-252,共7页High Voltage Apparatus

摘　　要：文中针对一起特高压气体绝缘金属封闭开关(GIS)设备的局放异常缺陷进行了由大到小、由外及内的逐步排查与分析,指出绝缘支撑筒内部气隙是本次GIS设备局放异常的根本原因。为了避免同类缺陷的再次发生,结合本次局放异常案例分析,对GIS设备绝缘件生产、质检和现场运维环节的注意事项、预防及处理措施提出建议。An abnormal partial discharge in a UHV GIS was presented in this paper.It was found by outside-in inspection and analysis that an air gap defect of the insulated support tube results in the abnormal phenomenon.The prevention and treatment measures during different processes of GIS were discussed with case analysis,such as the production,quality inspection and operating maintenance processes.Some suggestions were then proposed in order to avoid the recurrences of similar defects.

关 键 词：特高压(UHV) 气体绝缘金属封闭开关(GIS) 绝缘支撑筒 气隙缺陷 

分 类 号：TM855[电气工程—高电压与绝缘技术]