AC corona pulses amplitude and frequency related to pressure and humidity

Compared with DC corona, the physical process of AC corona is more complicated. Through the rod plane electrodes, AC corona characteristics varied with air pressure and humidity were researched in the chamber made of Perspex. The relationships between average amplitude of AC corona pulse and air pre...

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Bibliographic Details
Published in2014 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) pp. 361 - 364
Main Authors Xiaobo Meng, Jianfeng Hui, Hongwei Mei, Liming Wang, Zhicheng Guan
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2014
Subjects
AC corona
air pressure
Corona
corona pulse amplitude
corona pulse frequency
Humidity
Humidity measurement
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Summary:Compared with DC corona, the physical process of AC corona is more complicated. Through the rod plane electrodes, AC corona characteristics varied with air pressure and humidity were researched in the chamber made of Perspex. The relationships between average amplitude of AC corona pulse and air pressure or humidity, between the frequency of AC corona pulse and air pressure or humidity were studied. The average amplitude of AC corona pulse was inversely proportional to humidity. The amplitude decreased in positive half-cycle and increased in negative half-cycle with the fall of air pressure. What's more, the repetition frequency of AC corona pulses increased with the rise of the humidity. The frequency had little change with the fall of air pressure in the positive half-cycle, while rising in negative half-cycle obviously.
ISSN:0084-9162
2576-2397
DOI:10.1109/CEIDP.2014.6995850