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896 / 2022-07-14 20:47:01
Effect of O2 on insulation and partial discharge characteristics of C4F7N/CO2 mixture gas
C4F7N/CO2/O2,insulation,partial discharge decomposition
4. High Voltage Insulation System: Air, Gas, Vacuum Dielectrics
终稿
Luoyi Li / State grid Zhejiang Lishui power supply company
Aoying Ji / State grid Zhejiang Lishui power supply company
Cheng Li / State grid Zhejiang Lishui power supply company
Yijiang Chen / Wuhan university
Yi Li / Wuhan University
Song Xiao / Wuhan University
In recent years, the gas mixture of perfluoroisobutyronitrile (C4F7N) has attracted extensive attention as a potential substitute for the strong greenhouse gas SF6 in gas insulation equipment. On this basis, the possibility of C4F7N/CO2/O2 mixture gas replacing SF6 at medium pressure was studied. The insulation properties such as AC breakdown and partial discharge are systematically studied. It is found that the mixture of 15% C4F7N/81% CO2 /4% O2 has the best dielectric strength and self-recovery performance. Metal protrusion and insulator pollution caused by PD lead to decomposition of C4F7N, resulting in by-products CF4, CO, C2F6, C3F8 and COF2.
重要日期

  • 会议日期

    09月25日

    2022

    至

    09月29日

    2022

  • 08月15日 2022

    提前注册日期

  • 09月10日 2022

    报告提交截止日期

  • 11月10日 2022

    注册截止日期

  • 11月30日 2022

    初稿截稿日期

  • 11月30日 2022

    终稿截稿日期

主办单位
IEEE DEIS
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Chongqing University
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