Calculation and Analysis of the Insulation Performance of C4F7N-CO2 Gas Mixtures

DENG Yunkun; PENG Jing; JIAO Lin; ZHAO Haibo; TIAN Zengyao; ZHAO Hu

doi:10.13296/j.1001-1609.hva.2022.03.014

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Calculation and Analysis of the Insulation Performance of C₄F₇N-CO₂ Gas Mixtures

更新时间：2025-04-26

- Calculation and Analysis of the Insulation Performance of C₄F₇N-CO₂ Gas Mixtures
- High VoltageApparatus Vol. 58, Issue 3, Pages: 101-106(2022)
- 作者机构：
  
  1. 云南电网有限责任公司电力科学研究院
  2. 西北工业大学自动化学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2022.03.014
  CLC： TM213
- Published：2022
- 稿件说明：
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DENG Yunkun, PENG Jing, JIAO Lin, et al. Calculation and Analysis of the Insulation Performance of C₄F₇N-CO₂ Gas Mixtures[J]. High voltageapparatus, 2022, 58(3): 101-106.
DOI：

DENG Yunkun, PENG Jing, JIAO Lin, et al. Calculation and Analysis of the Insulation Performance of C₄F₇N-CO₂ Gas Mixtures[J]. High voltageapparatus, 2022, 58(3): 101-106. DOI： 10.13296/j.1001-1609.hva.2022.03.014.

摘要

作为一种新兴的环保绝缘气体，七氟异丁腈（C

N）因其优异的绝缘性能和远低于六氟化硫（SF

）的全球增温潜势引起了研究人员的广泛关注。在C

N电子碰撞截面等基础数据不完整的情况下，文中基于气体流注放电判据，提出了C

N-CO

混合气体有效电离反应系数的计算方法，分析了C

N-CO

混合气体的临界击穿场强及绝缘性能的变化规律。研究结果表明，当C

N气体的热化系数为1.2或1.4时，C

N-CO

混合气体的临界击穿场强计算值与实验数据吻合较好。此外，C

N-CO

混合气体临界击穿场强随气体比例的变化曲线均存在明显的非线性特点。当C

N含量较低时，混合气体的临界击穿场强随C

N含量增加迅速增大，之后则近似呈线性增长趋势。

Abstract

As an environment-friendly insulating gas

N has attracted extensive attention due to its excellent insulating performance and lower global warming potential than that of SF

.In the case of incomplete basic data such as electron collision cross section of C

this paper presents a method to calculate t

he effective ionization reaction coefficient and insulation performance of C

N-CO

mixtures based on stream discharge theory

and analyzes the critical breakdown field strength characteristics and insulation performance of C

N-CO

mixtures.The results show that when the thermalization coefficient of C

N gas is 1.2 or 1.4

the curve of the critical breakdown field strength of C

N-CO

gas is in good agreement with the experimental value.In addition

the curves of the critical breakdown field strength of the C

N-CO

mixed gas all have obvious nonlinear characteristics.When the content of C

N in the mixed gas is low

the value of the critical breakdown field strength of the mixed gas increases rapidly with the increase of the content of C

and then increases approximately linearly.

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