一、前言随着小水电建设事业的发展,500千瓦以上的骨干小水电站的建设愈来愈多。在工程规划设计中,经常会遇到长引水管道的电站类型,这类小水电站的调节保证参数的正确选择,是规划设计中的一个重要问题。通常,这类水电站需要设置调压井、调压阀等来解决调节保证问题,但是,我们在六百丈水电站工程的设计过程中,利用计算机进行了多方案比较,选出最佳方案,实现了长引 I. Introduction With the development of the construction of small hydropower, the construction of backbone small hydropower stations of more than 500 kilowatts has been increasing. In engineering planning and design, often encounter long diversion pipelines of power plant type, the adjustment of these small hydropower station to ensure the correct choice of parameters, is an important issue in planning and design. Generally, such hydropower stations need to be provided with surge tanks and pressure regulators to solve the problem of regulation and assurance. However, during the design of the Liu Baizhang hydropower station, we conducted a multi-program comparison using computers and selected the best solution to achieve Long lead