LAPSE:2018.1065
Published Article
LAPSE:2018.1065
Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection
Zhenyu Li, Licheng Li, Xingliang Jiang, Jianlin Hu, Zhijin Zhang, Wei Zhang
November 27, 2018
As a non-contact discharge detection method, ultraviolet (UV) imaging can rapidly, directly, and securely detect corona discharges. Therefore, UV imaging has been widely applied to power systems. To study the influences of different factors on UV corona discharge detection, two typical types of UV imagers (DayCor®Superb and CoroCAM®6D) were utilized. Results show that the observation angle has little impact on UV detection if no obstacles block the detection line of sight. Given that different UV imagers have different optimal imager gains, photon numbers under different gains could be calibrated to the values under optimal gains in accordance with the gain correction formula. Photon numbers decrease with the increase in the square of observation distance. Detection results under different observation distances could be corrected to the contrast distance after the detection of electrical equipment. The photon numbers of different UV imager types could be corrected in accordance with the instrumental correction factor. The results of this study can provide references to improve the applications and standardizations of UV imaging technology in corona discharge detection.
Keywords
corona discharge, correction, gain, observation angle, observation distance, photon number, UV imaging
Subject
Suggested Citation
Li Z, Li L, Jiang X, Hu J, Zhang Z, Zhang W. Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection. (2018). LAPSE:2018.1065
Author Affiliations
Li Z: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
Li L: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China; School of Electric Power, South China University of Technology, Guangdong 5010640,
Jiang X: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
Hu J: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
Zhang Z: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
Zhang W: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, China
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Journal Name
Energies
Volume
9
Issue
5
Article Number
E369
Year
2016
Publication Date
2016-05-16
Published Version
ISSN
1996-1073
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PII: en9050369, Publication Type: Journal Article
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LAPSE:2018.1065
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doi:10.3390/en9050369
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Nov 27, 2018
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CC BY 4.0
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Nov 27, 2018
 
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Nov 27, 2018
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Calvin Tsay
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