基于二项近似解玻尔兹曼方程计算CF<sub>3</sub>I/N<sub>2</sub>混合气体的绝缘特性

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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.

Key words： CF₃I/N₂ transport coefficients rate coefficients mixture ratio insulation characteristics

Received: 11 September 2018 Published: 17 April 2019

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	Liu Yuqi
	Li Shuo
	Liu Shiyu
	Cai Xinjing

Cite this article:

Liu Yuqi,Li Shuo,Liu Shiyu等. Solving the boltzmann equation to obtain insulation properties of CF₃I/N₂ gas mixtures based on two-term approximation[J]. Electrical Engineering, 2019, 20(4): 32-36.

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http://dqjs.cesmedia.cn/EN/Y2019/V20/I4/32

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