Characteristics of perfluoromethyl vinyl ether:A new eco-friendly alternative gas for SF_(6)  

作　　者：Song Xiao Yijiang Chen Mingjun Tang Shuangshuang Tian Haoran Xia Yifan Wang Ju Tang Yi Li Xiaoxing Zhang 

机构地区：[1]State Key Laboratory of Power Grid Environmental Protection,School of Electrical Engineering and Automation,Wuhan University,Hubei,China [2]Key Laboratory for High-Efficiency Utilization of Solar Energy and Operation Control of Energy Storage System,School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan,China

出　　处：《High Voltage》2024年第3期509-517,共9页高电压（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Number:52377156。

摘　　要：The exploration of eco-friendly insulating gas to substitute the most potent greenhouse gas sulphur hexafluoride(SF6)has consistently garnered significant attention.Herein,the au-thors evaluated the feasibility of utilising perfluoromethyl vinyl ether(PMVE,C_(3)F_(6)O)as a new branch of eco-friendly insulating gas for the first time.The primary dielectric and stability characteristics of PMVE regarding AC breakdown,partial discharge,dielectric recovery,and decomposition properties were revealed under various gas pressure and electrical field conditions.It was found that PMVE demonstrated superior dielectric strength,with the AC breakdown and PD inception voltage(PDIV)1.10 and 1.14 times that of pure SF_(6).Furthermore,the dielectric strength of PMVE exhibits stability even after undergoing 100 cycles of AC breakdowns,and there is no observable formation of solid precipitation on the electrode surface.The discharge decomposition of PMVE mainly generates fluorocarbon(CF_(4),C_(2)F_(6),C_(3)F_(6),C_(3)F_(8),etc.)and CO.Overall,the exceptional insulation stabilityandno absence of solidprecipitation featuresendow PMVE tobe utilised as a new eco-friendly gas for SF_(6)-free gas-insulated equipment.

关 键 词：SURFACE DIELECTRIC VINYL 

分 类 号：TM855[电气工程—高电压与绝缘技术]