水能计算中常常需要根据已知出力及入库流量来推求水库的蓄放水过程,通常采用的列表法需要进行大量试算,比较麻烦。本文介绍一种比较简便的图解法,其基本出发点是把电站的出力区分为不蓄出力和水库出力两部分,然后根据不蓄出力与电站实发出力进行比较来推算水库的蓄供水情况,当电站实发出力大于不蓄出力时,水库供水;反之,水库蓄水。 Often, it is necessary to deduce the process of water storage and discharge based on the known output and the inflow of water. The list method that is usually adopted needs a large amount of trial calculation, which is troublesome. This paper introduces a simple graphical method. The basic starting point is to divide the output of power station into two parts, that is, non-output power and reservoir output, and then calculate the reservoir water supply and storage according to the non-output power and actual power output of the power station. When the actual output of the power plant is greater than the non-output power, the reservoir supplies water; on the contrary, the reservoir stores water.