Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2007.06a
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- Pages.527-528
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- 2007
Trend in UHF Technique for On-Line PD Monitoring of Transformer
변압기의 온라인 PD 모니터링을 위한 UHF 기술의 동향
- Oh, Yong (Dept. of Electrical Eng., Dongshin Univ.) ;
- Yun, Ju-Ho (Dept. of Electrical Eng., Dongshin Univ.) ;
- Kim, Yun-Seok (Dept. of Electrical Eng., Dongshin Univ.) ;
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Choi, Yong-Sung
(Dept. of Electrical Eng., Dongshin Univ.)
;
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Lee, Kyung-Sup
(Dept. of Electrical Eng., Dongshin Univ.)
- Published : 2007.06.21
Abstract
A field-oriented UHF system for on-line PD monitoring of transformers is designed, which has been installed inside the oil tank of a 220kV transformer in a substation. This system has successfully captured long intermittent discharge signals that hadn't been detected through conventional techniques, and solved the problem successfully. The results demonstrate that UHF technique has great advantages for on-line PD monitoring of transformers. By adopting the peak detection technique, it becomes easy and effective for the transplantation of the phase-resolved pattern recognition technique from conventional method to UHF method, and then to realize continuous on-line monitoring, source characterization and trending analysis.