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A Study on the Water Absorption Diagnosis Method through Capacitance Measurement for Generator Stator Windings  

Kim, Hee-Soo (한국전력공사 전력연구원 수화력발전연구소 기계정비지원그룹)
Bae, Yong-Chae (한국전력공사 전력연구원 수화력발전연구소 기계정비지원그룹)
Kee, Chang-Doo (전남대학교 기계시스템공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.23, no.11, 2006 , pp. 50-57 More about this Journal
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
Generator stator windings; Water absorption test; Water leak test; Insulation breakdown;
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  • Reference
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