Calculation of Discharge Micro-parameters and Simulation of Insulation Characteristics for CF<sub>4</sub> and its N<sub>2</sub> Mixture

HOU Mengxi; YU Haoyang; JIN Zhao; YANG Yixin; LIU Zhao

doi:10.13296/j.1001-1609.hva.2020.01.018

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Calculation of Discharge Micro-parameters and Simulation of Insulation Characteristics for CF₄ and its N₂ Mixture

更新时间：2025-04-26

- Calculation of Discharge Micro-parameters and Simulation of Insulation Characteristics for CF₄ and its N₂ Mixture
- High VoltageApparatus Vol. 56, Issue 1, Pages: 121-127(2020)
- 作者机构：
  
  1. 国网经济技术研究院有限公司
  2. 华锐风电科技(集团)股份有限公司
  3. 国网辽宁省电力有限公司经济技术研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.01.018
  CLC： TM213
- Published：2020
- 稿件说明：
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[1]侯孟希,于昊洋,金钊,阳以歆,刘钊.CF_4及其N_2混合物微观放电参数计算与绝缘特性仿真研究[J].高压电器,2020,56(01):121-127.

HOU Mengxi, YU Haoyang, JIN Zhao, et al. Calculation of Discharge Micro-parameters and Simulation of Insulation Characteristics for CF₄ and its N₂ Mixture[J]. High voltageapparatus, 2020, 56(1): 121-127.
[1]侯孟希,于昊洋,金钊,阳以歆,刘钊.CF_4及其N_2混合物微观放电参数计算与绝缘特性仿真研究[J].高压电器,2020,56(01):121-127. DOI： 10.13296/j.1001-1609.hva.2020.01.018.

HOU Mengxi, YU Haoyang, JIN Zhao, et al. Calculation of Discharge Micro-parameters and Simulation of Insulation Characteristics for CF₄ and its N₂ Mixture[J]. High voltageapparatus, 2020, 56(1): 121-127. DOI： 10.13296/j.1001-1609.hva.2020.01.018.

摘要

为研究SF

替代气体CF

及其N

混合物微观放电参数

通过两项近似Boltzmann方程对室温环境下CF

及CF

混合物在混合比为20%～80%区间内的有效电离系数（α-η）/N进行了求解分析。利用COMSOL Multiphysics多物理场仿真软件首次对CF

及CF

混合物在均匀场下

不同混合比

不同压力条件下放电通道进行了一维模拟。仿真结果表明

混合物放电过程存在明显协同效应;CF

放电延时随气压增大而增大

仿真结果与数值计算结果吻合。

Abstract

Aiming to study the discharge micro-parameter of CF

and its N

mixture

two-term approximation ofBoltzmann equation was used. And the reduced effective ionization coefficient（α-η）/N of CF

and its N

mixture inthe range of 20% ～ 80% of the mixture ratio was calculated and analyzed. COMSOL Multiphysics simulation softwarewas used to imitate one-dimensional discharge channel of CF

and CF

in different mixing ration and pressure

un-der uniform electric field at ambient temper

ature for the first time. The result shows that the breakdown voltage ofCF

mixture shows remarkable synergistic effect with CF

mixing ratio increasing. And discharge delay time ofpure CF

increases with pressure increasing.The simulation result is accordant with the numerical result.

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⁰

Calculation of Discharge Micro-parameters and Simulation of Insulation Characteristics for CF4 and its N2 Mixture

DOI：10.13296/j.1001-1609.hva.2020.01.018

摘要

Abstract

关键词

Keywords

references

Calculation of Discharge Micro-parameters and Simulation of Insulation Characteristics for CF₄ and its N₂ Mixture