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The audible noise (AN) production mechanism caused by corona discharge in ultrahigh voltage transmission lines is less understood. The study on sound pressure characteristic is necessary to obtain the inherent relation between AN and corona discharge. In this paper, the experimental research on single-point direct current (dc) corona discharge was evolved and the time-domain sound pressure waveform...
The corona discharge and audible noise in different polarities have different characteristics and rules. The experiment of sing point corona discharge under DC voltage was developed and the sound pressure produced by corona discharge was measured. The amplitude and pulse characteristics of needle-plane corona discharges were studied. The sound pressure in time domain was measured by capacitor microphone...
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