The correlation between audible noise and corona current in time domain caused by single positive corona source on the conductor

Xuebao Li, Xiang Cui, Tiebing Lu, Yang Liu, Di Zhang, Zhenguo Wang

Research output: Contribution to journalArticle

24 Citations (Scopus)


Audible noise and corona current are two main DC corona effects, and they may both highly depend on the characteristics of space charges generated during corona discharge. However, relatively little investigation has previously been done on the correlation between them especially in time-domain. In the present work, the timedomain waveforms of audible noise and corona current generated by single positive corona source were recorded simultaneously. Their characteristics were carefully analyzed and found to be closely related. It was found that both the audible noise and the corona current consisted of repetitive pulses, and one-to-one relationship in time could be observed and confirmed between them. Furthermore, a linear correlation between the peak-to-peak values of audible noise pulses and the amplitude of corona current pulses was obtained. Empirical formulas with the same forms for them were derived to further prove the linear correlation. The close correlation between the audible noise and the corona current was interpreted qualitatively in the presented work and found to be highly related to the generated space charges.

Original languageEnglish
Article number7076836
Pages (from-to)1314-1320
Number of pages7
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Issue number2
Publication statusPublished - 2015 Apr 1
Externally publishedYes



  • audible noise
  • corona current
  • Correlation in time-domain
  • single corona source
  • space charges

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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