Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection
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 i...
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| Format: | Article |
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MDPI AG
2016-05-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/9/5/369 |
| _version_ | 1828354576451895296 |
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| author | Zhenyu Li Licheng Li Xingliang Jiang Jianlin Hu Zhijin Zhang Wei Zhang |
| author_facet | Zhenyu Li Licheng Li Xingliang Jiang Jianlin Hu Zhijin Zhang Wei Zhang |
| author_sort | Zhenyu Li |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-14T02:26:53Z |
| format | Article |
| id | doaj.art-ba38b1fa1c0245b4bfb8495e6d1c4ed1 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-14T02:26:53Z |
| publishDate | 2016-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ba38b1fa1c0245b4bfb8495e6d1c4ed12022-12-22T02:17:50ZengMDPI AGEnergies1996-10732016-05-019536910.3390/en9050369en9050369Effects of Different Factors on Electrical Equipment UV Corona Discharge DetectionZhenyu Li0Licheng Li1Xingliang Jiang2Jianlin Hu3Zhijin Zhang4Wei Zhang5State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaState Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Electrical Engineering, Chongqing University, Chongqing 400044, ChinaAs 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.http://www.mdpi.com/1996-1073/9/5/369corona dischargeUV imagingphoton numberobservation anglegainobservation distancecorrection |
| spellingShingle | Zhenyu Li Licheng Li Xingliang Jiang Jianlin Hu Zhijin Zhang Wei Zhang Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection Energies corona discharge UV imaging photon number observation angle gain observation distance correction |
| title | Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection |
| title_full | Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection |
| title_fullStr | Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection |
| title_full_unstemmed | Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection |
| title_short | Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection |
| title_sort | effects of different factors on electrical equipment uv corona discharge detection |
| topic | corona discharge UV imaging photon number observation angle gain observation distance correction |
| url | http://www.mdpi.com/1996-1073/9/5/369 |
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