根据国内外抽水蓄能电站设计经验，对不同于常规机组的水力学问题进行总结，以进出口水力设计，防漩措施，拦污栅设计，泥沙对其影响，包括过机含沙量及粒径限制准则，上、下池库区泥沙冲淤特性，及水力过渡过程的瞬态现象等提出了作者的认识及设计方法。 According to the design experience of pumped-storage power plants at home and abroad, the hydraulic problems that are different from the conventional units are summarized. Based on the import and export hydraulic design, anti-whirl measures, trash rack design, the influence of sediment, including the sediment concentration Particle size restriction criteria, sediment scouring and silting characteristics of upper and lower reservoir areas, transient phenomena of hydraulic transition process, and so on, put forward the author’s understanding and design methods.