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배용채(Yong-Chae Bae),김희수(Hee-Soo Kim),이두영(Doo-Young Lee),이현(Hyun Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
An unwanted outage of power unit can be occurred by significant insulation damage due to water absorption for generator stator bars. Reliable absorption test and diagnostics of water cooled generator stator bars are important to ensure the availability of power plant and to reduce maintenance cost by generator accident. It is described that the test method and the several stochastic evaluation methods for generator stator bar absorption. It is evaluated that the suggested methods can be used for reliable water absorption diagnosis of bar insulation by analysing the actual test result for generator stator bars in power plant.
배용채(Yong-Chae Bae),이대성(Dae-Sung Lee),김희수(Hee-Soo Kim),이현(Hyun Lee) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
Water leak for the water-cooled generator stator windings affects seriously the availability and the reliability of power plants. Leak test program for the stator windings is generally conducted in the power plant during every outage in order to confirm leak free. But it is so difficult to identify water absorption in the insulation of each winding because of the absence of adequate test equipment for the generator windings. In this paper, it is described as the new developed water absorption measurement equipment for water cooled generator stator windings and its verification using some experiments It is also introduced to the im plication of the developed equipment in power plant.