一、引言长期调度问题对于以水电电能为主的电力系统来说是重要的,同时这也是一个很困难的问题,这是由于下述原因:1.在水头与下泄流量之间存在一个非线性的目标函数。2.水电厂的电能函数是下泄流量与水头的一个不可分函数,而水头本身又是蓄水量的函数。3.状态变量(水头)与决策变量(下泄流量)均有界,应满足多目标河流开发利用的 I. INTRODUCTION The problem of long-term dispatch is important for hydropower-based power systems and is also a difficult one for the following reasons: 1. There is a nonlinearity between the head and discharge flow The objective function. 2. The energy function of hydropower plant is an inseparable function of discharge flow and head, and the head itself is a function of water storage. 3. State variables (head) and decision variables (discharge flow) are both bounded and should meet the development and utilization of multi-target rivers