六氟化硫替代气体研究进展综述

Survey of The Research Progress on SF_6 Alternatives

采用气体绝缘的电气设备,通常都使用六氟化硫(SF_6)气体作为绝缘介质。然而,SF_6是一种很强的温室气体,其对全球气候变暖的影响程度是二氧化碳(CO_2)的23900倍。随着全球范围对温室气体排放的管控日益严苛,SF_6存在的环境问题逐渐成为制约我国乃至全球电网绿色发展的重要因素。因此,寻找到电气性能与之相当且环境友好的SF_6替代气体成为近年来国内外研究的热点。本文从绝缘性能角度介绍了国内外SF_6替代气体的研究现状及最新的研究进展,为我国SF_6替代气体的研究工作提供有益的参考。

Sulfur hexafluoride （SF6） has been widely used as a gaseous insulating medium in the field of high voltage engineering and related electric power apparatus. However, SF6 is a strong greenhouse gas. Its global warming potential （GWP） is 23900 times greater than that of CO2. This may be a potential restricting factor for the green development of China and even the global electric power grid. There are many investigations focusing on searching for environmentally friendly insulation gases which can achieve equivalent insulation strength with SF6, meanwhile, reduce GWP apparently. The present paper introduces the research status and latest progress of SF6 alternatives, which offer some useful references for the research work in China.