Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2008.04c
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- Pages.115-118
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- 2008
On-line PD Monitoring Using UHF Technique
UHF 가술을 이용한 온라인 PD 모니터링
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Choi, Yong-Sung
(Department of Electrical Engineering, Dongshin University) ;
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Lee, Kyung-Sup
(Department of Electrical Engineering, Dongshin University)
- Published : 2008.04.17
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 transformer by two ways: on-line installing mode through the oil-valve and pre-installing mode through the man hole/hand hole cover. 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.