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Breakdown characteristics of CF4 and CF4/N2 hybrid gas in refrigeration temperature range

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Abstract

Common insulation gas cannot normally work in refrigeration temperature range (153−243 K), especially in extremely cold regions. To solve this problem, this essay uses cubic equation combined with two-parameter model in theorem of corresponding states to estimate dew-point of hybrid gas. The influence of temperature on mixing ratio is studied by using van der Waals equation. The result shows that the mixing ratio is stable during temperature-fall period. Insulation property of CF4 and CF4/N2 in refrigeration temperature range is studied through self-designed low-temperature test system. The result shows when the density of hybrid gas is invariable, temperature changing has less influence on breakdown voltage, and when the mixing ratio is 20%, CF4/N2 is the greatest potential hybrid gas.

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Authors and Affiliations

  1. School of Electrical and Electronic Engineering, North China Electric Power University, Beijing, 102206, China

    Meng-xi Hou  (侯孟希), Wei-guo Li  (李卫国), Chuang-ye Yuan  (袁创业) & Yi-xin Yang  (阳以歆)

  2. Measuring Center of State Grid Hunan Electric Power Corp, Changsha, 410000, China

    Jie Ouyang  (欧阳洁)

Authors
  1. Meng-xi Hou  (侯孟希)
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  2. Wei-guo Li  (李卫国)
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  3. Chuang-ye Yuan  (袁创业)
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  4. Yi-xin Yang  (阳以歆)
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  5. Jie Ouyang  (欧阳洁)
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Corresponding author

Correspondence to Wei-guo Li  (李卫国).

Additional information

Foundation item: Project(51277063) supported by the National Natural Science Foundation of China

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Hou, Mx., Li, Wg., Yuan, Cy. et al. Breakdown characteristics of CF4 and CF4/N2 hybrid gas in refrigeration temperature range. J. Cent. South Univ. 24, 861–865 (2017). https://doi.org/10.1007/s11771-017-3488-7

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  • DOI: https://doi.org/10.1007/s11771-017-3488-7

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