Characteristics of perfluoromethyl vinyl ether: A new eco‐friendly alternative gas for SF6
Song Xiao,
Yijiang Chen,
Mingjun Tang,
Shuangshuang Tian,
Haoran Xia,
Yifan Wang,
Ju Tang,
Yi Li,
Xiaoxing Zhang
Affiliations
Song Xiao
State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and Automation Wuhan University Hubei China
Yijiang Chen
State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and Automation Wuhan University Hubei China
Mingjun Tang
State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and Automation Wuhan University Hubei China
Shuangshuang Tian
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
Haoran Xia
State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and Automation Wuhan University Hubei China
Yifan Wang
State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and Automation Wuhan University Hubei China
Ju Tang
Yi Li
State Key Laboratory of Power Grid Environmental Protection School of Electrical Engineering and Automation Wuhan University Hubei China
Xiaoxing Zhang
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
Abstract The exploration of eco‐friendly insulating gas to substitute the most potent greenhouse gas sulphur hexafluoride (SF6) has consistently garnered significant attention. Herein, the authors evaluated the feasibility of utilising perfluoromethyl vinyl ether (PMVE, C3F6O) 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 SF6. 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 (CF4, C2F6, C3F6, C3F8, etc.) and CO. Overall, the exceptional insulation stability and no absence of solid precipitation features endow PMVE to be utilised as a new eco‐friendly gas for SF6‐free gas‐insulated equipment.
