세라믹 커플러를 이용한 고전압회전기 고정자권선의 On-line 및 off-line 부분방전 특성 시험 및 분석

Analysis and lest of On-line and off-line PD Testing for High Voltage Rotating Machines Stator Windings using Ceramic Coupler

  • 오봉근 (한국수자원공사 수자원연구원) ;
  • 김현일 (한국수자원공사 수자원연구원) ;
  • 강성화 (충청대학 소방안전과) ;
  • 임기조 (충북대학교 전기전자컴퓨터공학부)
  • 발행 : 2007.10.01


Partial discharge(PD) test can be performed either when the rotating machine is not operating(off-line) or during normal machine operation(on-line). This paper presents an on-line and off-line PD test on a large hydro-generator and induction motor using the same PD acquisition system(PDAS) and ceramic coupler(CC) sensor. PD signal characteristics of CC sensor proved similar with that of epoxy mica coupler(EMC) sensor as a results of PD test for simulated defect winding and frequency response test. A comparison of on-line and off-line PD test for PD characteristic parameters-phase resolved PD(PRPD), maximum PD value(Qmax) and PD occurrence energy(POE)-indicated that on-line PD test could reliably and effectively diagnose insulation conditions which were verified by off-line PD test.


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피인용 문헌

  1. Investigation of Simulation and Measuring Algorithm of Partial Discharge for Diagnosis of Electric Machinery Deterioration vol.25, pp.8, 2011,
  2. Comparison of Artificial Neural Network for Partial Discharge Diagnosis vol.14, pp.9, 2013,