一、问题重提以往在水能设计中一直沿用着设计水平年的概念,即选定某一年份,并以该年预测的负荷值及特征值作为系统条件,计算设计水电站的必须容量,进而论证装机容量。对这一水能专业的基本问题,在学术讨论中早有两种不同意见:一种意见认为在选择装机容量时,不一定要设计水平年,其主要理由是确定某一设计水平年相应的负荷值难以预测,而是假设某一负荷水平值(及特征值)来论证装机容量,对负荷值出现的具体年份可不考虑。另种意见认为一定要设计水 First, to revisit the problem In the past, the concept of design level year has been used in water energy design, that is, a certain year is selected, and the required load capacity and eigenvalue of the year are used as the system conditions to calculate the necessary capacity for designing the hydropower station. Demonstration of installed capacity. There are two disagreements in the academic discussion about the basic issue of this water energy specialty: One opinion is that it is not necessary to design a horizontal year when choosing installed capacity. The main reason for this is to determine whether a certain design level corresponds to It is difficult to predict the load value. Instead, it is assumed that a certain load level (and eigenvalue) is used to demonstrate the installed capacity, regardless of the specific year in which the load value appears. Another opinion that must be designed water