水电站机组间水量最优分配模型

Model of Optimal Water Allocation among Hydro-power Units

本文应用动态规划法建立了水电站机组间水量最优分配模型.模型求解过程中,通过处理空载流量,只需计算一种机组组合方案,即可求出机组间水量最优分配方案,对于四台机组,其计算工作量只是通常方法的1/15,机组台数越多,节省的计算工作量越大.此外,通过对模型的改进,在可用水量一定的情况下,可用汉字打印出多个最优分配方案,增加了水电站经济运行的灵活性.实例表明,用该模型分配水量比用平均法分配水量增加年发电量3212万kW·h.本模型对提高水电站的经济效益、有效地指导水电站经济运行,是切实可行的.

An optimal water allocation model among hydro-power units is established by using dynamic programming. In the process of solving the model, through dealing with the idling flow, the optimal water allocation scheme can be found with the calculation for one combination of the units. For four units, the amount of calculation work is reduced to 1/15. Besides, when the amount of useable water is fixed, through the improvement of the model, the optimal schemes can be printed in Chinese ideograph, which greatly increases the flexibility of economical operation of hydro-power units. Examples show that the annual output of electricity is increased 3212×10~4kW · h. This model is practicable in raising and quiding the economical operation of hydro-power stations.