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836 / 2022-04-24 21:08:59
Electrical tree characteristics dependent on crystallization process of iPP/POE blend insulation
polypropylene blend insulation; cooling methods; breakdown strength; electrical tree; crystallization
7. High Voltage Cable Insulation
终稿
Xuyang Zhao / Zhejiang Huadian Equipment Testing and Research Institute
Famin Dai / Tianjin University
Zhonglei Li / Tianjin University
Qvlong Yuan / Zhejiang Huadian Equipment Testing and Research Institute
Dinfang Ke / Zhejiang Huadian Equipment Testing and Research Institute
Shunan Zhang / Zhejiang Huadian Equipment Testing and Research Institute
Compared with cross-linked polyethylene (XLPE), polypropylene (PP) has higher working temperature, better insulation performance and can be recycled, which is considered to be a substitution of XLPE insulation. This work focuses on the effect of cooling methods during crystallization on the AC electrical tree growth characteristics in iPP/POE blend insulation.

The breakdown strength of iPP/POE blend insulation and the electrical tree initial voltage elevates with the cooling rates increase from 2.5 to 10 ℃/min. The breakdown strength and electrical tree initial voltage of non-isothermal crystallization samples are higher than isothermal samples. The spherulite size declines and the interface density of spherulites increases which introduces more deep traps. It is concluded that cooling rate can reduce the spherulite size of PP and then improve the electrical performance of PP cable insulation.

 
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
承办单位
Chongqing University
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