基于DPSA 的梯级水库群优化调度

动态规划法是一种求解多阶段决策优化问题的常用方法,在水库优化调度计算中应用广泛。该方法最大的缺陷就是用于水库群优化调度时易出现"维数灾"问题。逐次逼近动态规划法(DPSA)可以有效克服这一问题,它采用逐次迭代逼近的思想,将一个多维问题分解为多个一维问题求解。本文以水库运行模拟模型为基础,建立了基于DPSA的梯级水库群中长期优化调度模型,以汉江上游梯级水库群为研究对象,选取发电量最大为目标,对各水库库容进行离散,从而求解水库优化运行过程,其结果对于水库优化调度运行具有指导意义。

Optimal operation of cascade reservoirs based on DPSA

Dynamic Programming is a common method of solving multistep decision optimization problems and is widely used in reservoir optimal operation.The main disadvantage of DP is the "curse of dimensionality" when it is applied to cascade reservoirs.Successive Approximation Dynamic Programming(DPSA) can alleviate the problem by breaking the multidimensional problems into a number of single dimensional problems.Based on reservoir operation simulation model,this paper presents a long-term reservoir optimal operation model.With the upstream of the Hanjiang River cascade reservoirs as the study object,this paper takes the generated power as the objective,discretizes the storage of each reservoir and realizes the optimization by means of DPSA.It is proved that this model has significant value for reservoir operation.