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1729 / 2020-09-29 17:52:02
Study on Relationship between Cumulative Discharge Energy and Discharge Marks on Pressboard under High Field Strength
Extremely uneven electric field,Carbonized marks,Discharge repetition rate,Development stages,Cumulative discharge energy
High Voltage and Insulation Technology > Sensing, monitoring and diagnostics
终稿
Yiheng Wei / Chongqing university
Yiheng Wei / State Key Laboratory of Transmission & Distribution Equipment and Power System Safety and New Technology Chongqing University
Zhiren Xu / State Key Laboratory of Power Transmission Equipment & System Security and New Technology (Chongqing University)
Huanchao Cheng / China Electric Power Research Institute Beijing
Lijun Yang / State Key Laboratory of Transmission & Distribution Equipment and Power System Safety and New Technology Chongqing University
Xiangdi Meng / State Key Laboratory of Transmission & Distribution Equipment and Power System Safety and New Technology Chongqing University
    The insulation field strength of the UHV transformer is close to the design limit, which leads to the continuous increase of the working field strength of the oil-paper insulation structure. In order to explore the correlation between the development of PD and surface discharge marks on pressboard under high field strength, this paper used an extremely uneven electric field with a strong vertical component to study the development process of discharge marks and PD parameters under high field strength. The research found that PD under high field strength could cause serious damage to pressboard, resulted in white marks, spark discharge channels and carbonized marks. Based on the discharge repetition rate and discharge energy, the PD could be divided into three stages named the generation, fast extension and near breakdown stage respectively. The development of cumulative discharge energy and the growth of carbonized mark have the same law in three stages.



 
重要日期

  • 会议日期

    11月02日

    2020

    至

    11月04日

    2020

  • 10月27日 2020

    初稿截稿日期

  • 11月03日 2020

    报告提交截止日期

  • 11月04日 2020

    注册截止日期

  • 11月17日 2020

    终稿截稿日期

主办单位
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
承办单位
Huazhong University of Science and Technology
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