梯级水电站群短期发电调度计划快速生成方法

A Fast Algorithm for Short Term Scheduling of Cascaded Hydropower Reservoir Systems

摘要: 随着水电系统发展，发电计划制定面临着越来越复杂的需求。为避免求解复杂数学规划模型，本文提出一种快速生成梯级水电短期发电计划的方法。该方法不采用特定的目标函数，而是根据实际调度中普遍接受的降低耗水率、有利于负荷平衡、上下游水库协调等原则，在优化模型中采用的约束条件下制定发电计划。该方法由一系列满足调度期末水位、发电用水量、总电量，以及减少弃水的基本操作构成。根据负荷特性将时段排序，并结合能够满足时段关联约束的负荷分配算法，实现这些调度目标。以南方电网红水河梯级水电站群为背景的实例研究表明该方法能有效制定发电计划，并满足复杂的出力分配规则。

Abstract: With the development of hydropower systems, more and more complex demands are encountered by hydropower scheduling. To obtain near optimal schedules of hydropower systems effectively without solving complex mathematic programming, a fast algorithm is proposed. Without an objective function, the basic scheduling concepts of saving water, servicing for power system balance, coordination of up and down stream reservoirs, together with most of the constrains of optimization models, are used to direct the scheduling of cascaded hydropower systems. The method is composed of a series of operations for whole time horizon requirements such as final reservoir level, total energy or total turbine water of a plant, total energy of several cascaded reservoirs, and reducing spill water. To achieve one target, a successive power scheduling method is proposed in which temporal order of power rise/fall based on load characters and a local scheduling algorithm that can satisfy period coupled constraints are combined. Case study of hydropower system in Hongshui River operated by China Southern Power Grid (CSG) shows that the proposed method is effective in obtaining power schedules and complex power distribution rules can be achieved.