On-Line Diagnosis Method for Generator Rotor Windings

발전기 운전중 회전자 진단에 관한 연구

  • 이영준 (한국전력공사 전력연구원) ;
  • 공태식 (한국전력공사 전력연구원) ;
  • 김희동 (한국전력공사 전력연구원) ;
  • 주영호 (한국전력공사 전력연구원)
  • Published : 2002.07.10

Abstract

A shorted-turn test was performed at the Sininchon combined cycle power plant on gas turbine generators. The test was conducted using a permanent flux probe and on-line diagnosis system. The flux probe installed in the generator air gap senses the field winding slot leakage flux and produces a voltage proportional to the rate of change of the flux. This pattern of flux variation is a signature unique to each field winding. We have also applied a voltage waveform analysis technique that can identify the pole location, slot number and number of shorted-turn with each slot.

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