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186 / 2023-10-20 17:01:45
Lightning Breakdown Macroscopic Behavior Analysis of Three-element Mixed Insulation Oil-Paper System
discharge development time, lightning impulse breakdown voltage, mineral oil-paper system, three-element mixed insulating oil-paper system
4.High voltage and insulation technology > (3)、High Voltage insulation technologies
Final Paper
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
     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.
Important Date

  • Conference Date

    Dec 08

    2023

    to

    Dec 10

    2023

  • Nov 01 2023

    Draft paper submission deadline

  • Dec 10 2023

    Registration deadline

Sponsored By
IEEE IAS
Organized By
Southwest Jiaotong University (SWJTU)
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