高电压技术2017，Vol.43Issue(3)：754-764,11.DOI:10.13336/j.1003-6520.hve.20170303009
CF3I-N2混合气体在稍不均匀和极不均匀电场中的工频击穿特性
AC Breakdown Characteristics of CF3I-N2 Gas Mixtures in Condition of Quasi-homogeneous and Extremely Non-uniform Electric Field
摘要
Abstract
Trifluoroiodomethane (CF3I) has been broadly proposed as a potential replacement for SF6.AC breakdown tests on CF3I-N2 gas mixtures have been completed in the condition of quasi-homogeneous and extremely non-uniform electric field,focusing on the CF3I-N2 gas mixtures with volume fraction of 20％ and 30％ CF3I,gas pressure from 0.1 MPa to 0.3 MPa,and gap distance from 5 mm to 30 mm.On the basis of the foregoing analyses of breakdown characteristics,we reveal the effect laws of CF3I volume fraction,gap distance,gas pressure,and electric field non-uniform coefficient on the power frequency breakdown voltage of CF3I gas mixtures.The AC breakdown voltages of CF3I-N2 gas mixtures linearly increase with the gas pressure and gap distance under quasi-homogeneous field.In the condition of non-uniform field,the AC breakdown voltages of CF3I-N2 gas mixtures approach to saturation with the increasing of gas pressure.The experimental results indicate that CF3I-N2 gas mixtures with CF3I volume fraction of 20％ and 30％ can achieve nearly 50％ and 55％ power frequency withstand voltage of pure SF6,respectively.关键词
CF3I-N2混合气体/SF6替代气体/稍不均匀电场/极不均匀电场/工频击穿特性Key words
CF3I-N2 gas mixture/replacement gas for SF6/quasi-homogeneous electric field/extremely non-uniform electric field/AC breakdown characteristics引用本文复制引用
邓云坤,马仪,陈先富,张少泉,陈晓云,肖登明..CF3I-N2混合气体在稍不均匀和极不均匀电场中的工频击穿特性[J].高电压技术,2017,43(3):754-764,11.基金项目
国家自然科学基金重点项目(51337006) （51337006）
中国博士后科学基金(2016M602728) （2016M602728）
南方电网公司科技项目(YNKJXM20160081).Project funded by National Natural Science Foundation of China (51337006),China Postdoctoral Science Foundation (2016M602728),Science and Technology Project of China Southern Power Grid (YNKJXM20160081). （YNKJXM20160081）
