Insulation Performance of C3F7CN/CO2 Gas Mixtures in Quasi-uniform Electric Field

ZHANG Ying; CHEN Qi; ZHANG Xiaoxing; LI Yi; ZHANG Ji; XIAO Song

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Insulation Performance of C₃F₇CN/CO₂ Gas Mixtures in Quasi-uniform Electric Field

更新时间：2025-12-08

- Insulation Performance of C₃F₇CN/CO₂ Gas Mixtures in Quasi-uniform Electric Field
- Vol. 44, Issue 10, Pages: 3158-3164(2018)
- 作者机构：
  
  1. 贵州电网有限责任公司电力科学研究院
  2. 武汉大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 October 2018，
  
  Published：2018
- 稿件说明：
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ZHANG Ying, CHEN Qi, ZHANG Xiaoxing, et al. Insulation Performance of C₃F₇CN/CO₂ Gas Mixtures in Quasi-uniform Electric Field[J]. 2018, 44(10): 3158-3164.
DOI：

ZHANG Ying, CHEN Qi, ZHANG Xiaoxing, et al. Insulation Performance of C₃F₇CN/CO₂ Gas Mixtures in Quasi-uniform Electric Field[J]. 2018, 44(10): 3158-3164. DOI：

摘要

近年来C

CN作为一种环保绝缘介质受到SF

替代气体领域研究者的广泛关注

目前针对其混合气体的工频击穿特性鲜有系统性研究。利用球电极模拟准均匀电场测试了C

CN/CO

混合气体的工频击穿特性及自恢复特性

系统分析了混合比和气压等因素对工频击穿电压的影响情况及C

CN与CO

气体间的协同效应

并与相同条件下的SF

进行对比。研究发现

CN体积分数为2%～8%的混合气体的工频击穿电压随气压增加呈线性增长趋势

随混合比的增加呈饱和增长趋势。混合比为2%的C

CN/CO

混合气体工频击穿电压能达到相同条件下纯SF

的50%

混合比为8%的C

CN/CO

混合气体工频击穿电压能达到相同条件下纯SF

的75%。C

CN与CO

气体存在一定的协同效应。另外

CN混合气体的复原特性优良。相关研究成果证实了C

CN/CO

混合气体具有替代SF

的潜力。

Abstract

In recent years

CN has been widely concerned by researchers in the field of SF

alternative gas as an environmental-friendly insulation medium.However

there are few systematic studies on the power frequency breakdown performance of C

CN/CO

gas mixtures at present. In this paper

the power frequency breakdown and self-resto

ring characteristics of C

CN/CO

gas mixtures were tested under the ball electrodes which were used to simulate quasi-uniform electric field. The influences of mixing ratios and gas pressures on the breakdown voltage and the synergistic effect between C

CN and CO

were systematically analyzed and compared with that of SF

under the same conditions. The study shows that the power frequency breakdown voltage of the gas mixtures with C

CN content of 2% to 8% increases linearly with the increase of gas pressure

and presents a saturation growth trend with the increase of the mixing ratio.When the content of C

CN is 2% or 8%

the power frequency breakdown voltage of C

CN/CO

gas mixure can reach 50% and 75% of that of pure SF

under the same conditions

respectively. C

CN has a good restoring insulation performance and has a certain synergistic effect when mixed with CO

. The research results confirm that C

CN/CO

gas mixtures have a potential to replace SF

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