(一) 問题的提出在选擇水电站装机容量时,必須遵循兩个原則,第一为經济性,就是从整个系统来看,使單位投资和年运行費所帶來的效益最大,常常以抵偿年限或系统年計算支出作为衡量标准;第二为运行的合理性,亦即使系统各电站能够取长补短,尽量發挥各电站的优点。 (I) Proposal of the Project There are two principles that must be followed in choosing the installed capacity of a hydropower station. The first is economic. That is, from the point of view of the whole system, the benefits brought by unit investment and annual running cost are the greatest, often with compensation Year or system of annual expenditure as a measure; the second is the rationality of the operation, that is, even if the power station of each system can learn from each other’s strengths, make full use of the advantages of each power station.