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Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics

Author

Listed:
  • Chuang Wang

    (State Key Laboratory of Mechatronics Engineering and Control, Beijing Institute of Technology, Beijing 100081, China)

  • Xi Chen

    (State Key Laboratory of Mechatronics Engineering and Control, Beijing Institute of Technology, Beijing 100081, China)

  • Jiting Ouyang

    (State Key Laboratory of Mechatronics Engineering and Control, Beijing Institute of Technology, Beijing 100081, China)

  • Tie Li

    (Xi’an Institute of Electromechanical Information Technology, Xi’an 710065, China)

  • Jialu Fu

    (State Key Laboratory of Mechatronics Engineering and Control, Beijing Institute of Technology, Beijing 100081, China)

Abstract

Negative corona discharge occurs widely in high voltage transmission lines and other “high voltage” uses, which can cause strong electromagnetic interference (EMI). In this research, the pulse current of multi-needle negative corona discharge and its electromagnetic (EM) radiation characteristics were studied and compared with that of single-needle negative corona discharge. A dipole radiation model was established to analyze the EM radiation characteristics of the negative corona discharge. The results show that the Trichel pulse discharge process of one discharge needle in multi-needle discharge structure will inhibit the discharge of the other discharge needles. It is only when the voltage reaches a certain threshold will the current and EM radiation fields of multi-needle discharge structure with a significant increasing of amolitude. The frequency of EM radiation of negative corona discharge is not affected by the number of needles, but is only related to ambient air pressure. This research provides a basis for detecting corona discharge sources in different conditions.

Suggested Citation

  • Chuang Wang & Xi Chen & Jiting Ouyang & Tie Li & Jialu Fu, 2018. "Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics," Energies, MDPI, vol. 11(11), pages 1-16, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:3120-:d:182095
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