Analysis of the Insulation Properties of CF3I and CF3I-N2Gas Mixtures from Electron Transport Parameters
Deng Yunkun1,2, Ma Yi3, Zhao Su2, Xiao Dengming2
1.Postdoctoral Workstation of Yunnan Power Grid CorporationKunming650217 China; 2. Department of Electrical Engineering Shanghai Jiao Tong University Shanghai 200030 China; 3. Yunnan Electric Power Grid Research Institute Kunming 650217 China
Abstract：Trifluoroiodomethane (CF3I) has been broadly proposed as a potential replacementfor sulfur hexafluoride (SF6) owing to its outstanding dielectric strength and physico-chemical properties. This paper aimed to adopt the Boltzmann equationmethod to calculate the electron transport coefficients of CF3I and its gas mixture with N2, and comprehensively investigate the insulation propertiesof CF3I gas mixtures from the point view of micro-parameters. The calculation results indicate that the insulation strength of pureCF3I is 1.19 times greater than that of SF6. It is also foundthat CF3I-N2 gas mixture with 70% CF3I presents a very similar dielectric strength to that ofSF6. In addition, CF3I gas mixtures have advantages on the electric field sensitivity comparedwith SF6, however, disadvantages on the synergistic effect.
邓云坤, 马仪, 赵谡, 肖登明. 基于电子输运参数的CF3I及CF3I-N2混合气体绝缘性能分析[J]. 电工技术学报, 2018, 33(7): 1641-1651.
Deng Yunkun, Ma Yi, Zhao Su, Xiao Dengming. Analysis of the Insulation Properties of CF3I and CF3I-N2Gas Mixtures from Electron Transport Parameters. Transactions of China Electrotechnical Society, 2018, 33(7): 1641-1651.
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2018, Vol. 33 
