On the Vibration Characteristics of the Hydro-turbine Units in Shatuo Hydropower Station
After the operation of Shatuo Hydropower Station,wide vibration zone and narrow stable operation zone prob-lems are observed.Thus,numerical simulation studies are carried out on the hydro-turbine units.The pressure pulsation at the volute inlet,the bladeless area,and the draft tube is analyzed.The results show that the volute inlet is mainly of low frequency pulsation.The pressure pulsation in the bladeless area exhibits obvious dynamic-static interference phe-nomena,accompanied by low frequencies.The draft tube is mainly affected by low frequency pulsation caused by the tail water vortex bands.The results provide useful basis for the exploration of vibration alleviation measures for the units.
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