基于乘子法的梯级水电站短期优化运行研究

THE SHORT—TERM OPTIMAL OPERATION STUDY OF CASCADED HYDROPOWER STATIONS BASED ON THE MULTIPLIER METHOD

本文从分析电力系统中梯级水电子系统短期优化调度的最优准则出发,建立了梯级水电站短期优化调度的非线性规划模型。该模型考虑了水电站水头、效率的变化等因素影响,并通过一系列转换,使模型成为以电站下泄流量为独立变量的形式,利用乘子法求解。实例优化结果表明乘子法用于求解梯级水电站短期优化调度的有效性。

In this paper, the nonlinear programming model of the short-term optimal dispatching of cascaded hydropower station is established based on the optimization criterion of short-term scheduling of cascaded hydroelectric subsystems of electric power systems. In the model, the following factors are taken into account: the variations of head and efficiency, the other variables are expressed as the function of releasinge discharge of hydropower station via a series of translations. The model is solved by the multiplier method. The result shows that multiplier method is efficient for solving the short-term optimal dispatching of cascade hydropower station.