Phase-Controlled Arcing Range of Ring Main Unit Filled with C<inf>4</inf>F<inf>7</inf>N/CO<inf>2</inf> Mixed Gas Under Slightly Positive Pressure

Liyan Zhang; Yongxing Wang; Enyuan Dong; Yu Tian; Yu Zhu; Wei Li; Lifan Zhang; Jiyan Zou

doi:10.17775/CSEEJPES.2022.01460

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Phase-Controlled Arcing Range of Ring Main Unit Filled with C4F7N/CO2 Mixed Gas Under Slightly Positive Pressure

Regular Papers | 更新时间：2026-04-16

- Phase-Controlled Arcing Range of Ring Main Unit Filled with C4F7N/CO2 Mixed Gas Under Slightly Positive Pressure
- CSEE Journal of Power and Energy Systems Vol. 12, Issue 2, Pages: 1052-1062(2026)
- 作者机构：
  
  1. School of Electrical Engineering, Dalian University of Technology,Dalian,China
  2. China Electric Power Research Institute,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2022.01460
  CLC：
- Published：2026
- 稿件说明：
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Liyan Zhang, Yongxing Wang, Enyuan Dong, et al. Phase-Controlled Arcing Range of Ring Main Unit Filled with C4F7N/CO2 Mixed Gas Under Slightly Positive Pressure[J]. CSEE Journal of Power and Energy Systems, 2026, 12(2): 1052-1062.
DOI：

Liyan Zhang, Yongxing Wang, Enyuan Dong, et al. Phase-Controlled Arcing Range of Ring Main Unit Filled with C4F7N/CO2 Mixed Gas Under Slightly Positive Pressure[J]. CSEE Journal of Power and Energy Systems, 2026, 12(2): 1052-1062. DOI： 10.17775/CSEEJPES.2022.01460.

摘要

Abstract

Perfluoroisobutyronitrile (C<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4F<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">7N) and its mixed gas are being widely studied as one of the most potential gases to replace SF<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6. Focusing on the breaking process of ring main unit (RMU) filled with C<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4F<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">7N/CO<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2 mixed gas under slightly positive pressure

the phase-controlled technology is used to improve the breaking capacity of the interrupter in this paper. The decomposition and consumption of C<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4F<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">7N caused by arcing can be suppressed. Whole process arc model describing the arcing stage and current zero stage is established based on magnetohydrodynamics (MHD) and black box model (BBM). During the opening process

in which both the current and the opening distance are time-varying

influences of the arcing time on internal and external characteristics of the arc

current zero characteristics and post-arc re-ignition characteristics are theoretically analyzed. Reasonable phase-controlled arcing range (PCAR) is calculated and evaluated. According to IEC 62271-103: 2011 and GB/T 3804-2017 standard

synthesis tests are carried out under different arcing times. Results show evaluated PCAR can improve characteristics of the arcing stage and reduce average arcing time. Probability of successful breaking is increased. Effectiveness of phase-controlled technology and evaluation method of arcing range under slightly positive pressure is further verified.

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references

22. Gas Discharge Plasma Database (GPLAS) . [Online ] . Available: http://plasma-data.net.

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Phase-Controlled Arcing Range of Ring Main Unit Filled with C4F7N/CO2 Mixed Gas Under Slightly Positive Pressure

DOI：10.17775/CSEEJPES.2022.01460

摘要

Abstract

关键词

Keywords

references