Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on the Water Absorption Diagnosis Method through Capacitance Measurement for Generator Stator Windings

발전기 고정자 권선의 정전용량 측정을 통한 흡습 진단 방법에 관한 연구

  • 김희수 (한국전력공사 전력연구원 수화력발전연구소 기계정비지원그룹) ;
  • 배용채 (한국전력공사 전력연구원 수화력발전연구소 기계정비지원그룹) ;
  • 기창두 (전남대학교 기계시스템공학부)
  • Published : 2006.11.01
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Abstract

The water leak in water-cooled generator stator windings can generate the serious accidents such as insulation breakdown and it brings a generator to the unexpected sudden outage. Accordingly, it is important to diagnose the water absorption of them for the effective operation of power plant. Especially, the capacitance value which is measured for diagnosis is very small so the special diagnosis methods like stochastic theory are needed. KEPRI developed the water absorption test equipment and diagnosis technology for them. The developed diagnosis technology is applied to the real system and the results of water absorption test for stator windings are agreed to them of water leak test.

Keywords

References

  1. Stanton, D. J., 'Diagnosing and Repairing Water Leaks in Stator Windings,' G. E. Company Review, pp.1-10, 1992
  2. Inoue, Y. and Hasegawa, H., Wet Bar Detection and Maintenance of Water-Cooled Stator Bars of Turbine Generators, PowerGen-Europe 2005
  3. Makoto, T., 'Development of a Capacitance Measuring Robot for the Water-Cooled stator Winding of Turbine Generators,' IEEE Trans. on Energy Conversion, Vol. 14, No.4, pp. 1366-1371, 1999 https://doi.org/10.1109/60.815074
  4. Bae, Y.C., Kim, H.S., Lee, D.Y., 'Diagnosis of Water Absorption for Generator Stator Windings' KSPE 2006 Spring Annual Meeting, pp. 285-286, 2006
  5. Ayyub, B. M., 'Probability Statistics & Reliability for Engineers,' CRC Press, New York, 1997