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Simulation and Study of DC Corona Discharge Characteristics of Bar-Plate Gap

Author

Listed:
  • Na Feng

    (State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China
    School of Electrical and Control Engineering, North University of China, Taiyuan 030051, China)

  • Tiehua Ma

    (State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China
    School of Electrical and Control Engineering, North University of China, Taiyuan 030051, China)

  • Changxin Chen

    (State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China
    School of Electrical and Control Engineering, North University of China, Taiyuan 030051, China)

  • Boren Yao

    (State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China
    School of Electrical and Control Engineering, North University of China, Taiyuan 030051, China)

  • Weitao Gao

    (State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China
    School of Electrical and Control Engineering, North University of China, Taiyuan 030051, China)

Abstract

In this paper, the corona discharge process of the bar-plate gap at −1 kV DC voltage is simulated using a two-dimensional axisymmetric plasma module. We analyze the variation of air negative corona discharge current, and the distribution morphology of microparticles in different discharge stages in detail. The significance of plasma chemical reactions at some typical time and the distribution characteristics of heavy particles are investigated according to reaction rates. Results show that, in the current rising stage, the collision ionization reactions (e.g., R 1 and R 2 ) and electron adsorption reaction (e.g., R 3 ) play a major role, which lead to the increase in charged particles and the formation of an electron avalanche. In the current drop stage, all reaction rates decreased, except for collision ionization and electron attachment, partial charge transfer reactions (e.g., R 8 , R 10 , R 11 , and R 14 ), and composite reactions (e.g., R 16 , R 17 , and R 18 ), which come into play and gradually reduce the number of charged ions in the gap. In the current stabilizing stage, the main chemical reactions are composite reactions (e.g., R 16 and R 17 ), then the corona discharge ends. For the heavy particle distribution, O 2 + and O 4 + are the main positive ions, O 2 − is the most abundant negative ions, and the neutral particles are mainly O.

Suggested Citation

  • Na Feng & Tiehua Ma & Changxin Chen & Boren Yao & Weitao Gao, 2022. "Simulation and Study of DC Corona Discharge Characteristics of Bar-Plate Gap," Energies, MDPI, vol. 15(17), pages 1-13, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6431-:d:905488
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    Cited by:

    1. Qiwen He & Jufeng Wang & Yang Lu & Yongfeng Song & Zhenghao Jia & Hao Li & Yanlei Wang & Yiyi Zhang, 2022. "Research on Energy Conversion in the Arc-Extinguishing Process of a Long-Gap Gas Lightning-Protection Device," Energies, MDPI, vol. 15(20), pages 1-14, October.

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