Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Characteristics of Ultra High Frequency Partial Discharge Signals from Metallic Particle Defected Oil-paper Insulation in Transformer

변압기 절연지 표면 금속 이물질 방전에 의한 극초단파 신호특성

  • 윤진열 (한국전력공사 전력연구원 송배전연구소) ;
  • 주형준 (한국전력공사 전력연구원 송배전연구소) ;
  • 구선근 (한국전력공사 전력연구원 송배전연구소) ;
  • 박기준 (한국전력공사 전력연구원 송배전연구소)
  • Received : 2009.08.19
  • Accepted : 2009.09.23
  • Published : 2009.10.01
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Abstract

This paper was provided to help in detecting defects in power transformer. For this purpose, a partial discharge cell was designed and manufactured as a discharge source to simulate particle defected paper-oil insulation in power transformer. Experimental set-up for measuring PD signals was described. Magnitude of electromagnetic wave signals and corresponding amount of apparent discharge were measured simultaneously against phase of applied voltage to the discharge cell. Frequency range and pattern of PRPD(Phase Resolved Partial Discharge) of partial discharge signals were examined and analyzed. The results will be contributed to build the defect database of power transformer and to decrease the substation faults.

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References

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