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SF6 gas, widely used as an insulation and arc-extinguishing gas in power systems, causes serious greenhouse effects, so people have been searching for possible environmentally friendly alternative gases. SF6/N2 mixed gas is a feasible solution, reducing SF6 emissions while also lowering the gas liquefaction temperature. This paper takes a 220kV disconnector as the research object and establishes a Magneto-hydro-dynamic (MHD) model of the arc burning process under different Inflation Pressure, and the arc-extinguishing performance of SF6/N2 mixed gas is analyzed. The model established in this paper has certain reference value in arc simulation. The research results of this paper are of great significance for the application of SF6/N2 mixed gas in power switchgear.

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Simulation of Arc Breaking Under Different Inflation Pressure of SF6/N2 Gas

  • 会议论文

  • 发表日期：

    2025年

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  • Peilong Chen,
  • Yao Zhong,
  • Xin Li,
  • Shijian Ju,
  • Dibo Wang,
  • Zeyu Ouyang,
  • Ying Zhang,
  • Yuze Mu

摘要

SF6 gas, widely used as an insulation and arc-extinguishing gas in power systems, causes serious greenhouse effects, so people have been searching for possible environmentally friendly alternative gases. SF6/N2 mixed gas is a feasible solution, reducing SF6 emissions while also lowering the gas liquefaction temperature. This paper takes a 220kV disconnector as the research object and establishes a Magneto-hydro-dynamic (MHD) model of the arc burning process under different Inflation Pressure, and the arc-extinguishing performance of SF6/N2 mixed gas is analyzed. The model established in this paper has certain reference value in arc simulation. The research results of this paper are of great significance for the application of SF6/N2 mixed gas in power switchgear.