Mobile Maintenance Room of GIS Equipment at the Voltage Class of 220kV

Abstract

According to data about GIS breakdown maintenance in Maintenance Branch of State Grid Chongqing Electric Power Company during recent years, GIS accident of Chongqing Electric Power Company that happens every year is internal fault of local air chambers (such as breaker, PT and bus) in most cases. Once accident happens, a high requirement will be proposed for water prevention and damp prevention at the site during either on-site inspection for the accident cause or replacement for the damaged equipment. In order to effectively cover the first hole of the opened GIS air chamber and make the operation environment meet rain-proof and damp-proof requirements during internal examination for GIS air chamber, a design scheme of mobile GIS maintenance room is proposed in this paper. SF6 detection equipment as well as temperature and humidity examination equipment is installed in the maintenance room, so as to measure multiple parameters and to guarantee light transmission, ventilation and fire resistance. It is convenient for installation and disassembly, and the space can be adjusted. It is suitable for GIS equipment maintenance at the voltage class of 220kV.