500kV GIS设备漏气原因分析及改进工艺  

Cause Analysis and Process Improving of 500kV GIS Equipment Leakage Phenomenon

作　　者：张守勋[1] 邓科[1] 张舜[1] 胡卡[1] 李佳[1] 

机构地区：[1]国网湖北省电力公司检修公司,湖北武汉430050

出　　处：《湖北电力》2014年第2期58-60,共3页Hubei Electric Power

摘　　要：随着SF6封闭式组合电器(GIS)设备在500kV变电站的广泛投入运行,已发现部分GIS因漏气导致SF6压力降低的现象。本文对湖北省500kV变电站的GIS设备漏气现象进行了调查统计,并以朝阳变电站为例进行试验分析,得出主要原因为外"V"槽密封不完全,失去可靠的防水措施,容易形成贯穿型槽孔而导致漏气。对漏气设备进行注脂工艺改进后,均未发现对接面存在漏气现象。As more and more SF6enclosed switchgears(GIS)equipments put into operation in 500 kV substation,pressure reducing caused by SF6leakage has been detected up to now.This paper investigates the 500kV GIS equipment leakage phenomenon in Hubei province.Taking Chaoyang substation as example,the experimental analysis demonstrates that the main cause of leakage is the outer ' V' groove sealed not completely,which loses the reliable waterproof measures and is easy to form throughout shaped slot caused leakage.After greasing process improvement for the leakage equipment,the docking surface leakage phenomenon is not found.

关 键 词：GIS 漏气现象 法兰密封 注脂工艺 

分 类 号：TM64[电气工程—电力系统及自动化]