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A Combined Electro-Thermal Breakdown Model for Oil-Impregnated Paper

Author

Listed:
  • Meng Huang

    (School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China)

  • Yuanxiang Zhou

    (State Key Lab of Control and Simulation of Power Systems and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Zhongliu Zhou

    (State Key Lab of Control and Simulation of Power Systems and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China)

  • Bo Qi

    (School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China)

Abstract

The breakdown property of oil-impregnated paper is a key factor for converter transformer design and operation, but it is not well understood. In this paper, breakdown voltages of oil-impregnated paper were measured at different temperatures. The results showed that with the increase of temperature, electrical, electro-thermal and thermal breakdown occurred successively. An electro-thermal breakdown model was proposed based on the heat equilibrium and space charge transport, and negative differential mobility was introduced to the model. It was shown that carrier mobility determined whether it was electrical or thermal breakdown, and the model can effectively explain the temperature-dependent breakdown.

Suggested Citation

  • Meng Huang & Yuanxiang Zhou & Zhongliu Zhou & Bo Qi, 2017. "A Combined Electro-Thermal Breakdown Model for Oil-Impregnated Paper," Energies, MDPI, vol. 10(12), pages 1-12, December.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:2160-:d:123294
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    References listed on IDEAS

    as
    1. Ruijin Liao & Ende Hu & Lijun Yang & Yuan Yuan, 2015. "Space Charge Behavior in Paper Insulation Induced by Copper Sulfide in High-Voltage Direct Current Power Transformers," Energies, MDPI, vol. 8(8), pages 1-11, August.
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