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以三峡水电站水轮机运行工况为模拟条件，进行了混流式水轮机尾水管压力脉动试验研究；分析了在水头变幅较大的工况下混流式水轮机尾水管水压力脉动与转轮出口水流环量及单位参数之间的关系．研究结果表明，适当选定混流式水轮机额定参数对减轻尾水管水压力脉动是十分有效的．
Taking the turbine operating conditions of the Three Gorges Hydropower Station as a simulation condition, the pressure pulsation test of the draft tube of the Francis turbine was carried out. The influences of the pressure pulsation of the draft tube of the Francis turbine and the outlet flow current And the relationship between unit parameters. The results show that it is very effective to properly select the rated parameters of Francis turbine to reduce the water pressure pulsation in draft tube.