中国电力2012，Vol.45Issue(12)：71-75,5.
SF6/N2混合气体绝缘特性的实验研究
Experimental Studies on Electrical Insulation Performances of SF6/N2 Gas Mixtures
摘要
Abstract
SF6 gas is widely used for gas-insulated switchgear (GIS), which has led to public concerns about environmental pollutions. It is urgently required to reduce or eliminate the use of SF6 gas in GISs so as to reduce the environmental pollutions. Various experiments were conducted to study the electrical breakdown characteristics of SF6 gas and N2/SF6 gas mixtures under different mixing ratios and working pressures and in different electric-field structures. The testing results indicate that the N2/SF6 gas mixture, when 20%-30% of SF6-gas is inputted in N2, can attain 80% of pure SF6 gas in electrical strength, but will have no significant increase in the strength with further increase of SF6-gas ratio. Moreover, it was found that the extremely uneven structure of electric field will significantly reduce the electrical strength of the gas. The testing results has verified the feasibility of SF6/N2 gas mixture in substituting pure SF6 gas.关键词
气体绝缘开关设备/SF6/N2混合气体/SF6气体/电气绝缘特性/耐电强度/击穿电压/环境保护Key words
gas-insulated switchgear (GIS)/ SF6/N2-mixed gas/ SF6 gas/ electrical insulation property/ electric strength/ breakdown voltage/ environmental protection分类
信息技术与安全科学引用本文复制引用
孙鹏程,王帮田,洪文芳,王其中..SF6/N2混合气体绝缘特性的实验研究[J].中国电力,2012,45(12):71-75,5.
