高电压技术2017，Vol.43Issue(3)：788-794,7.DOI:10.13336/j.1003-6520.hve.20170303013
c-C4F8/N2与c-C4F8/CO2混合气体的绝缘性能
Insulating Properties of c-C4F8/N2 and c-C4F8/CO2 Mixtures
摘要
Abstract
To find a friendly alternative gas with low global warming potential (GWP) for SF6,we investigated insulating properties of c-C4Fs/N2 and c-C4F8/CO2 mixtures.Meanwhile,experiments in a sphere-plate electrode were done in different gap distance,pressures,and gas ratio of c-C4F8]N2 and c-C4F8]CO2 mixture gas under frequency AC voltage,compared with SF6,c-C4F8,N2 and CO2 in the same conditions.And the decomposition products were detected after breakdown.Experimental results show that the breakdown voltage of mixtures increases as the gas pressure/gap length/ratio of c-C4F8 increases;there is a synergistic effect between c-C4F8 and N2/CO2;In slightly nonuniform field,insulation performances of 30％ c-C4Fs/N2 and c-C4F8]CO2 mixed gas are equal to 75％ and 79％ of pure SF6 in 0.1 MPa;the synergistic effect coefficients of c-C4F8/N2 and c-C4F8/CO2 in 5％～30％ mixing ratio are between 0.20～0.79 and 0.15 ～0.65,respectively.From the insulating properties,liquefaction temperature standpoint and environment,c-C4Fs/N2 and c-C4F8/CO2 gas mixture may be used as an alternative for SF6 gas in electrical equipment.关键词
SF6的替代气体/绝缘性能/工频耐压实验/c-C4F8/N2与c-C4F8/CO2混合气体Key words
alternative gas of SF6/insulation properties/frequency AC voltage/c-C4Fs/N2 and c-C4F8/CO2引用本文复制引用
满林坤,邓云坤,肖登明..c-C4F8/N2与c-C4F8/CO2混合气体的绝缘性能[J].高电压技术,2017,43(3):788-794,7.基金项目
国家电网公司科技项目:环境友好型中压开关绝缘技术研究(SA0300732) （SA0300732）
中国博士后科学基金(2016M602728).Project supported by Science and Technology Project of SGCC:Insulated Technology Research of Environmentally Friendly Medium Voltage Switchgear(SA0300732),China Postdoctoral Science Foundation (2016M602728). （2016M602728）
