中国电机工程学报2016，Vol.36Issue(22)：6276-6285,10.DOI:10.13334/j.0258-8013.pcsee.160146
CF3I/N2混合气体在不同电场下的工频击穿特性试验研究
Experimental Research of CF3I/N2 Gas Mixtures on Power Frequency Breakdown Performances Under Different Electric Field
肖淞 1张晓星 1戴琦伟 2韩晔飞2
作者信息
- 1. 武汉大学电气工程学院，湖北省武汉市 430072
- 2. 输配电装备及系统安全与新技术国家重点实验室 重庆大学，重庆市沙坪坝区 400044
- 折叠
摘要
Abstract
As a potential substitute of SF6 applied in electric equipment, CF3I and its gas mixtures have been widely noted. The paper was about the possibility of CF3I/N2 substituting SF6 gas from breakdown performances under different electric fields. The effects of pressure, mixture ratio and electric field utilization coefficient on CF3I/N2 breakdown voltage were investigated through power frequency breakdown tests. The results were compared with SF6 and SF6/N2 in the same condition. Synergy indexC was used to define synergistic effect type of gas mixtures and analyze strength of synergistic effect quantitatively. The results show that power frequency breakdown voltage of CF3I/N2 increases linearly with pressure under different electric fields and mixture ratios. With the growth of electric field utilization coefficient, its power frequency breakdown voltage increases gradually with pressure’s linear growth rate. Pure CF3I is extremely sensitive to electric field. Adding N2 contributes to improving sensibility of CF3I towards electric field; under extremely nonuniform electric field, CF3I/N2 gas mixtures have positive synergistic effect which is better than SF6/N2 gas mixtures when the pressure is equal or higher than 0.15MPa. Under slightly nonuniform and quasi-uniform electric fields, CF3I/N2 has synergistic effect. The higher the pressure is, the more obvious the synergistic effect is; When the mixture ratio is 30%, CF3I/N2 of 0.3MPa can be used in gas insulation line (GIL), cubicle gas insulation switchgear (C-GIS) and other electric equipment to substitute SF6.关键词
CF3I/N2/击穿特性/电场利用系数/协同效应Key words
CF3I/N2/breakdown performances/electric field utilization coefficient/synergistic effect分类
信息技术与安全科学引用本文复制引用
肖淞,张晓星,戴琦伟,韩晔飞..CF3I/N2混合气体在不同电场下的工频击穿特性试验研究[J].中国电机工程学报,2016,36(22):6276-6285,10.
