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Lightning Breakdown Macroscopic Behavior Analysis of Three-element Mixed Insulation Oil-Paper System
编号：175 访问权限：仅限参会人 更新：2023-11-20 13:53:25 浏览：499次 张贴报告

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摘要
     The breakdown voltage of insulation oil-paper composite system is important for the safe operation of transformer. In this paper, the voltage and current waveform, lightning impulse breakdown voltage, discharge development time of mineral oil-paper system (MO-P) and three-element mixed insulation oil-paper system (TEMO-P) at gap lengths of 0, 5, 10 and 15 mm, as well as the morphologies of oil-impregnating paperboard are studied. The results show that under negative polarity, the increase of lightning impulse breakdown voltage with gap of TEMO-P is greater than that of MO-P. Under positive and negative polarity, the rapid rise zones of MO-P discharge development time are different, ranging from 10 mm to 15 mm and from 0 mm to 10 mm respectively. Both positive and negative polarity of TEMO-P increased at 5 mm to 15 mm. After the breakdown under negative polarity, the surface of TEMO-P is prone to large area dendritic.
关键词
discharge development time, lightning impulse breakdown voltage, mineral oil-paper system, three-element mixed insulating oil-paper system
报告人
Hongwei Li
Graduate student Chongqing University

稿件作者
Hongwei Li Chongqing University
Jian Hao Chongqing University
Hanting Zhang Chongqing University
Xiong Liu State Grid Chongqing Electric Power Co.
Wei Qin State Grid Chongqing Electric Power Co.
Wenyu Ye Chongqing University
Junyi Zhang Chongqing University
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重要日期

  • 会议日期

    12月08日

    2023

    至

    12月10日

    2023

  • 11月01日 2023

    初稿截稿日期

  • 12月10日 2023

    注册截止日期

主办单位
IEEE IAS
承办单位
Southwest Jiaotong University (SWJTU)
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