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Compatibility between C 6 F 12 O–N 2 Gas Mixture and Metal Used in Medium-Voltage Switchgears

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Listed:
  • Ran Zhuo

    (Electric Power Research Institute, China Southern Power Grid, Guangzhou 510623, China
    State Key Laboratory of HVDC, Electric Power Research Institute, CSG, Guangzhou 510663, China)

  • Qi Chen

    (School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China)

  • Dibo Wang

    (Electric Power Research Institute, China Southern Power Grid, Guangzhou 510623, China
    State Key Laboratory of HVDC, Electric Power Research Institute, CSG, Guangzhou 510663, China)

  • Mingli Fu

    (Electric Power Research Institute, China Southern Power Grid, Guangzhou 510623, China
    State Key Laboratory of HVDC, Electric Power Research Institute, CSG, Guangzhou 510663, China)

  • Ju Tang

    (School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China)

  • Juntai Hu

    (Pingdingshan Power Supply Company, State Grid Corporation of China, Pingdingshan 467001, China)

  • Yanlei Jiang

    (Pingdingshan Power Supply Company, State Grid Corporation of China, Pingdingshan 467001, China)

Abstract

C 6 F 12 O has been introduced as the potential alternative gas to SF 6 because of its excellent insulation properties and great eco-friendly performance. Considering that C 6 F 12 O may react with the internal materials of switchgears in practical applications, its compatibility with metal materials must be tested to evaluate its long-term application possibilities. In this work, the compatibility of C 6 F 12 O–N 2 gas mixtures with aluminum and copper was tested at different temperatures by setting up a heat-aging reaction platform between the gas and each metal. The metal surface morphology and gas composition before and after the reaction were compared and analyzed. The results show that the surface color of the copper sheet changed considerably, and the corrosion degree of the surface deepened with the increase of temperature. The decomposition of C 6 F 12 O was also promoted. In contrast, aluminum did not react severely with the gas mixture. The compatibility of the gas mixture with aluminum was generally better than that of copper.

Suggested Citation

  • Ran Zhuo & Qi Chen & Dibo Wang & Mingli Fu & Ju Tang & Juntai Hu & Yanlei Jiang, 2019. "Compatibility between C 6 F 12 O–N 2 Gas Mixture and Metal Used in Medium-Voltage Switchgears," Energies, MDPI, vol. 12(24), pages 1-11, December.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:24:p:4639-:d:294995
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    References listed on IDEAS

    as
    1. Abderrahmane Beroual & Abderrahmane (Manu) Haddad, 2017. "Recent Advances in the Quest for a New Insulation Gas with a Low Impact on the Environment to Replace Sulfur Hexafluoride (SF 6 ) Gas in High-Voltage Power Network Applications," Energies, MDPI, vol. 10(8), pages 1-20, August.
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