利用分段线性模型描述水电机组出力特性曲线,通过设置最短运转时间与最短停机时间等机组启闭约束构建了水电站日优化调度的混合整数线性规划模型,采用GAMS编程调用CPLEX模块求解,并以隔河岩水电站为例对模型进行了验证。实例结果表明,该模型可在考虑水头变化影响、满足开停机约束等条件下,显著提高水电站的水能资源利用率。 The piecewise linear model is used to describe the output characteristic curves of hydropower units. A mixed integer linear programming model of daily optimal dispatching for hydropower stations is constructed by setting the constraints such as shortest running time and minimum downtime, and solved by CPAM module with GAMS programming. Heyan Hydropower Station as an example to verify the model. The results of the example show that the model can significantly improve the utilization of hydropower resources under consideration of the impact of head changes and the constraints of on and off.