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梯级水电站群中长期优化调度的正交离散微分动态规划方法

DOI: 10.13334/j.0258-8013.pcsee.2015.18.009, PP. 4635-4644

Keywords: 离散微分动态规划,水电站群,优化调度,降维,维数灾,试验设计

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Abstract:

我国特大流域梯级水电站群正在形成,这些梯级水电站群普遍具有装机规模大、级数众多的特点。随着巨型梯级水电站的集中投产,其优化调度计算规模不断增加,维数灾问题日益凸显。在分析离散微分动态规划(discretedifferentialdynamicprogramming,DDDP)算法的基础上,提出了正交试验设计和DDDP相结合的正交离散微分动态规划方法(orthogonaldiscretedifferentialdynamicprogramming,ODDDP)。该方法以DDDP为基础,采用正交试验设计选取具有“均衡分散,整齐可比”性质的部分状态组合,以减少方法所需存储量与计算量,进而提高计算的规模和效率。乌江干流梯级水电站群仿真调度结果表明,ODDDP在大幅缩短计算耗时的同时可获得与DDDP相近的优化结果,系统求解效率和计算规模显著提高。

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