Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 1997.04a
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- Pages.278-282
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- 1997
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- 1598-2548(pISSN)
Modal Testing on a High Head Pump/Turbine Runner
고낙차 수력 펌프/터빈 런너에 대한 모우드 실험
Abstract
This paper describes results of modal testing for a high head pump-turbine runner of the Muju pumped storage power plant. The head of the pump-turbine is 601 m and the outside diameter of its runner is 4,410 mm. The modal testing was done for two conditions : 1) the runner in air ; 2) the runner in water. For both conditions, obtained are natural frequencies, corresponding mode shapes and damping ratios. From the testing, it is found that the natural frequencies of the pump-turbine runner in water is reduced approximately 40 % due to additional mass effect of the water.
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