高海拔对SF_6密度继电器及电器设备中SF_6充气压力值影响的研究  

High Elevation Influence on SF_6 Gas Density Relay and SF_6 Gas Charging Pressure of Electrical Equipment

作　　者：路自强[1] 胡海舰[2] 

机构地区：[1]青海电力科学试验研究院,青海西宁810008 [2]青海省电力公司生产部,青海西宁810008

出　　处：《高压电器》2009年第4期37-40,46,共5页High Voltage Apparatus

摘　　要：为了解决高海拔对SF6密度继电器的影响问题,选取本公司系统使用较多的3个厂家的SF6密度继电器,并在不同海拔条件下进行了试验,对海拔影响SF6密度继电器的原因进行了分析,得出海拔的影响实质是大气压的影响。并提出了解决措施:在现场应将SF6密度继电器的充油螺丝打开,使其表壳内的气体与当地大气压平衡,然后再拧紧,再进行检验、投入使用;对高海拔地区SF6电气设备的充气压力及SF6密度继电器动作值应进行修正。This paper analyzes the cause of elevation influence on SF6 gas density relay through choosing three different brands that are commonly used in Qinghai electric power system, and conducts a test at different elevations. It is found that the elevation influence is actually the influence of air pressure. A solution to the elevation influence problem is proposed, which includes unbolting the oil charging screw of SF6 gas density relay in field, and retightening it as the gas pressure inside the shield equals to atmospheric pressure, then conducting test and putting the delays into operation.

关 键 词：高海拔 电气设备 充气压力 SF6密度继电器 

分 类 号：TM586[电气工程—电器]