Preprint Article Version 1 This version is not peer-reviewed

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

Version 1 : Received: 21 October 2018 / Approved: 22 October 2018 / Online: 22 October 2018 (05:38:30 CEST)

How to cite: Wang, C.; Chen, X.; Ouyang, J.; Fu, J. Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics. Preprints 2018, 2018100471 (doi: 10.20944/preprints201810.0471.v1). Wang, C.; Chen, X.; Ouyang, J.; Fu, J. Pulse Current of Multi-Needle Negative Corona Discharge and Its Electromagnetic Radiation Characteristics. Preprints 2018, 2018100471 (doi: 10.20944/preprints201810.0471.v1).

Abstract

Negative corona discharges occur widely in high voltage transmission lines and charged aircraft, which can cause strong electromagnetic interference. Negative corona discharge is typically performed simultaneously at multiple discharge points. In this study, the current and its EM radiation characteristics of single-needle and multi-needle negative corona discharge in different conditions were tested. The current and electromagnetic radiation characteristics of the two discharge structures were compared. The dipole radiation model was established to analyze the EM radiation characteristics of the negative corona discharge.The results show that, It is only when the voltage reaches a certain threshold that the current and electromagnetic radiation fields of the multi-needle discharge structure will be superimposed and their amplitudes will increase significantly. The frequency of electromagnetic radiation signal does not change with the number of needles, cathode geometry and applied voltage, but only depends on ambient pressure. It provides a basis for detecting corona discharge sources under different conditions.

Subject Areas

corona discharge; Trichel pulse; multi-needle; EM radiation

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.