Solving the boltzmann equation to obtain insulation properties of CF3I/N2 gas mixtures based on two-term approximation
Liu Yuqi1, Li Shuo1, Liu Shiyu2, Cai Xinjing1
1. School of Electrical Engineering Northeast Electric Power University, Jilin, Jilin 132012; 2. State Grid Siping Electric Power Supply Company, Siping, Jilin 136000
Abstract：This paper describes the current research status of SF6 alternative gas at home and abroad, introduces the basic characteristics and insulation characteristics of the environmental CF3I/N2 mixed gas, and analyzes the characteristics of the insulating gas and the data processing by using the calculation principle of the electron transport coefficients and rate coefficients. Through the analysis of the characteristics of the insulating gas and the data processing, the electronic energy of the different mixture ratio CF3I/N2 insulating gases is analyzed. The influence of mean energy, longitudinal diffusion coefficients, Townsend coefficient and effective ionization coefficients prove the possibility of CF3I/N2 as an alternative to SF6 insulating gas. The research shows that the mixture of 60%CF3I and 40%N2 can reach the insulation level of SF6 and N2. It can be used as a substitute for SF6 gas as insulating medium in gas insulated switchgear. It has a good application prospect.
刘宇琦, 李硕, 刘世宇, 蔡新景. 基于二项近似解玻尔兹曼方程计算CF3I/N2混合气体的绝缘特性[J]. 电气技术, 2019, 20(4): 32-36.
Liu Yuqi, Li Shuo, Liu Shiyu, Cai Xinjing. Solving the boltzmann equation to obtain insulation properties of CF3I/N2 gas mixtures based on two-term approximation. Electrical Engineering, 2019, 20(4): 32-36.
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2019, Vol. 20 
