FS-DDDP方法及其在水库群优化调度中的应用

FS-DDDP Method and Its Application to Optimal Operation of Groups of Reservoirs

可行搜索—离散微分动态规划(FS-DDDP)方法是在考虑水库运行的综合利用要求的前提下,利用正向搜索和逆向搜索相结合的方式寻找水库优化调度过程的大量可行轨迹,以目标函数较大的几个可行轨迹作为DDDP方法的初始轨迹分别进行再寻优计算的优化算法。该方法可进行单库优化计算,也可进行库群优化计算。黄河上游梯级水库数量较多,综合利用要求复杂。文中以该梯级为例,说明FS-DDDP方法可在满足该梯级水库群的河流生态用水、防凌用水、灌溉用水、发电用水等综合利用要求的前提下,以水库群发电效益最大为目标,求得水库群优化调度的较好解。

Considering the integrated utilization of reservoirs, the FS-DDDP method is used to search a great deal of feasible tracks of the process of optimal reservoir operation by the combination of forward search and backward search, and some feasible tracks with better objective function are regarded as initial tracks of the DDDP method for further optimization. The method can be used for single reservoir and groups of reservoirs, Taking the cascade reservoirs on the upper Yellow River as an example, the paper expatiates the FS-DDDP method and its realization, by which the optimal solution for generation benefit is obtained under the condition of satisfying the integrated utilization of the cascade reservoirs.