The Transactions of the Korean Institute of Electrical Engineers P (전기학회논문지P)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Reliability Improvement of Insulation Diagnosis Using the Hydro-Generator On-Line Partial Discharge Monitoring System

수력발전기 On-line 부분방전 측정 시스템을 이용한 절연상태 진단의 신뢰성 향상

  • 옥연호 (한국수자원공사 댐.유역 관리처 발전 설비팀) ;
  • 이은웅 (충남대학교 전기공학과) ;
  • 임재일 (한국수자원공사 충주권관리단 발전팀) ;
  • 박지군 (한국수자원공사 충주권관리단 발전팀) ;
  • 곽원구 (한국수자원공사 충주권관리단 발전팀) ;
  • 이재흥 (한국수자원공사 충주권관리단 발전팀) ;
  • 신재필 (한국수자원공사 댐.유역 관리처 발전 설비팀) ;
  • 신병철 ((주)인텍C&I)
  • Published : 2009.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Accident dangerousness of domestic hydro power generators which are operated in Korea is on the increase because of use at the long term. On this, the Off-line diagnosis techniques developed to the On-line by continued domestic technical development since 2000. Especially, On-line insulation diagnosis of domestic hydro power generator is possible by localization of partial electric discharge sensor and On-line insulation diagnosis system. This paper shows the diagnosis result that is applied localized Ceramic Coupler and PDMS-HG(Partial Discharge Monitoring System for Hydro Generator) at four Chung-ju hydro Generator used for 25 years. Particularly, the confidence of insulation diagnosis is improved by using high frequency filter and sampling the partial discharge signals which occur in site. For reviewing the confidence of On-Line insulation diagnosis system, we measured the outside noises and partial discharge signals during practical operation by using the partial discharge diagnosis system of the Full A/D process. And we reviewed the confidence of the On-Line insulation diagnosis system by comparing and analyzing these data.

Keywords

References

  1. I.M. Culbert, H. Dhirani and G.C. Stone, "Handbook to Assess the Insulation Condution of Large Rotating Machines (Volume 16)", EPRI publication EL-5036, 1989
  2. Paoletti, G. J. and A. Rose, "Improving Existing Motor Protection for Medium Voltage Motors", IEEE Trans. on Industry Applications, 25(3), 456-464. 1989 https://doi.org/10.1109/28.31216
  3. Stone, G., "Importance of Bandwidth in PD Measurement in Operating Motors and Generators", IEEE Trans. on Dielectrics and Electrical Insulation, 7(1), 6-11. 2000 https://doi.org/10.1109/94.839335
  4. Stone, G. C., Howard G. Sedding, Michael J. Costello, "Application of Partial Discharge Testing to Motor and Generator Stator Winding Maintenance", IEEE Trans. on Industry Applications, Vol. 32, No. 2, pp. 459-464. 1996 https://doi.org/10.1109/28.491498
  5. Motor Reliability Working Group, "Report of Large Motor Reliability Survey of Industrial and Commercial Installations-Part I", IEEE Trans. on Industry Applications, IA-21(4), 853-864. 1985 https://doi.org/10.1109/TIA.1985.349532
  6. IEEE Std 1434-2000, "IEEE Trial-Use Guide to the Measurement of Partial Discharges in Rotating Machinery", Aug. 2000
  7. 강동식 외, "13 kV급 수력발전기 고정자 권선용 On-line 부분방전 측정 시스템 개발 및 현장적용 평가", 대한전기학회 논문지, Vol. 55C, No. 4, pp. 189-198, 2006
  8. 강동식 외, "고압 회전기 On-line 부분방전 측정용 Ceramic Coupler 특성", 대한전기학회 논문지, Vol. 51C, No. 5, pp. 205-212, 2002
  9. 강동식 외, "권선형기기 On-line 부분방전 측정용 6.6 [kV]급 Ceramic Coupler의 신뢰성 평가", 대한전기학회 논문지, Vol. 54C, No. 2, pp. 69-75, 2005