对洪家渡水电站引水系统在设置尾水调压室和取消尾水调压室两种情况下的过渡过程进行了计算研究 .计算表明 ,通过考虑机组特性、优化机组导叶关闭规律及合理整定调速器参数 ,该水电站取消尾水调压室的方案是可行的 ,其各设计参数控制值基本上能满足设计要求 .计算成果已作为该电站设计方案比较的依据之一 The transitional process of diversion system of Hongjiadu Hydropower Station under the two conditions of tail water surge tank and tail water surge tank are calculated and calculated.The results show that by optimizing the guide vane closing law and reasonable setting Governor parameters, it is feasible for the hydropower station to cancel the tail water pressure regulating chamber scheme, and the control value of each design parameter can basically meet the design requirements. The calculation result has been taken as the basis for comparison of the design scheme of the power plant