Analysis of the Insulation Characteristic of CF<sub>3</sub>I Ternary Gas Mixture Using Boltzmannês Equation

XU Lingling; CHENG Lin; DU Weijie; ZHANG Chaohai; ZHAO Kun

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Analysis of the Insulation Characteristic of CF₃I Ternary Gas Mixture Using Boltzmannês Equation

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- Analysis of the Insulation Characteristic of CF₃I Ternary Gas Mixture Using Boltzmannês Equation
- Vol. 43, Issue 3, Pages: 721-726(2017)
- 作者机构：
  
  1. 国家电网公司运维检修部
  2. 国网电力科学研究院武汉南瑞有限责任公司
  3. 华中科技大学强电磁工程与新技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：10 March 2017，
  
  Published：2017
- 稿件说明：
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XU Lingling, CHENG Lin, DU Weijie, et al. Analysis of the Insulation Characteristic of CF₃I Ternary Gas Mixture Using Boltzmannês Equation[J]. 2017, 43(3): 721-726.
DOI：

XU Lingling, CHENG Lin, DU Weijie, et al. Analysis of the Insulation Characteristic of CF₃I Ternary Gas Mixture Using Boltzmannês Equation[J]. 2017, 43(3): 721-726. DOI：

摘要

CF3I气体作为潜在的SF

替代气体

为了解CF3I三元混合气体的临界击穿强度和协同效应

通过求解两项近似Boltzmann方程

计算得出CF3I三元混合气体在折合场强范围为100

00Td的电子能量分布函数（electron energy distribution function

EEDF）、有效电离系数?、临界折合场强（E/N）cr

采用系数ξ分析三元混合气体间的协同效应。计算结果表明

三元混合气体中如果存在N

或CO

等缓冲气体

EEDF中的低能电子分布增加

导致协同效应的出现。CF3I与N

和CO

的协同效应较明显

与CF4不存在协同效应。两种强电负性气体CF3I/SF

混合后会出现微弱的负协同效应

而添加N

或CO

能减轻负协同效应的影响。

Abstract

As a potential alternative gas of SF

I is focused on.We calculated the electron energy distribution function（EEDF）

normalized effective ionization coefficient

and critical reduced electric field of CF

I ternary gas mixtures by using two-term approximate Boltzmann equation.Meanwhile

we analyzed the synergetic effect of gas mixtures.The results show that the addition of buffer gas such as N

or CO

in CF

I ternary gas mixtures helps to increase the number of electron in low energy and leads to the synergetic effect.Moreover

the synergetic effect exists in CF

I/N

or CF

I/CO

mix

tures

while it has not been seen in CF

I/CF4.However

I/SF

mixture shows slight negative synergetic effect.

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Analysis of the Insulation Characteristic of CF3I Ternary Gas Mixture Using Boltzmannês Equation

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摘要

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Analysis of the Insulation Characteristic of CF₃I Ternary Gas Mixture Using Boltzmannês Equation