依据电力电量平衡推求设计水电站的工作容量对,采用一近似公式耒代替累积曲线法求解,已在一些设计单位使用,计算简捷:精度也能满足要求。但此类公式的推导过程至今未见正式刊出,且引据各异,对不同情况的处理方法亦存在差别.本文首先介绍其一般形式的推导过程,再谈谈在不同情况下如何使用此式的意见。 According to the balance of power and power demand, the design of hydropower station capacity, using an approximate formula 耒 instead of the cumulative curve method has been used in some design units, the calculation is simple: the accuracy can meet the requirements. However, the deduction process of such formulas has not been formally published so far, and the references are different, and the methods of dealing with different situations are also different.This paper first introduces its general form of derivation process, and then talk about how to use this in different situations Style advice.