변압기의 온라인 PD 모니터링을 위한 UHF 기술의 동향

Trend in UHF Technique for On-Line PD Monitoring of Transformer

  • 오용 (동신대학교 전기공학과) ;
  • 윤주호 (동신대학교 전기공학과) ;
  • 김윤석 (동신대학교 전기공학과) ;
  • 최용성 (동신대학교 전기공학과) ;
  • 이경섭 (동신대학교 전기공학과)
  • 발행 : 2007.06.21

초록

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.

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