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A Study on PD Detection Methods for Cast-resin Dry-type Transformers

몰드변압기의 부분방전 검출기술에 관한 연구

  • 박찬용 (한국해양대학교 전기전자공학부) ;
  • 박대원 (한국해양대학교 전기전자공학부) ;
  • 최재성 (한국해양대학교 전기전자공학부) ;
  • 길경석 (한국해양대학교 전기전자공학부)
  • Published : 2009.09.01

Abstract

Transformer failures are mostly due to partial discharges (PDs) caused by the deteriorated insulation. It is, therefore, important to monitor PD occurrence in insulation system and prevent their deterioration. The presented paper deals with a PD detection method by a capacitive probe, which easily apply to cast - resin dry - type transformers. The PD detection system consists of a capacitive probe and a low noise amplifier having the frequency bandwidth of 500 $Hz{\sim}30$ MHz. In the experimental set-up, sensitivity of the system is 7.16 mV/pC.

Keywords

References

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