不同排涝情景下泵站单机组变角优化运行研究

Research on the Optimal Operation of Single Adjustable-blade Pump Unit in Pumping Stations According to Different Drainage Scenarios

排涝泵站在区域排水中发挥了重要作用,开展排涝泵站优化运行研究,具有重要的现实意义。针对排涝泵站的不同排涝情景(日常排涝、超标准排涝、预降阶段、抢排阶段),构建了泵站单机组一定时间内排水量最大、耗电费用最小的非线性多目标变角优化数学模型,采用一维动态规划法求解,得到一系列与不同耗电费用所对应的各时段开停机、叶片安放角度的决策方案,以及最大排水量和单位费用排水量。选择某圩区排涝泵站单机组日运行优化为例,分析了不同停机次数约束对变角优化结果的影响,并分别对日常排涝、超标准排涝、预降阶段和抢排阶段等不同排涝情景提出了优化运行建议。研究结论为排涝泵站汛期优化调度方案的决策提供了参考。

As drainage pumping station plays an important role in regional drainage,it is of great practical significance to study the optimal operation of drainage pumping station.In this paper,according to the different drainage scenarios(such as daily drainage,superstandard drainage,pre-lowering water-level stage and emergency drainage stage),a nonlinear optimization model of single adjustable-blade pump unit is constructed,with the multi-objective of maximum water discharge and minimum power consumption cost in a certain time.Then one-dimensional dynamic programming method is used to solve the model,and a series of optimal decision schemes corresponding to different costs are obtained,including shutdown,startup and blade angle in every period,and maximum water discharge and unit cost drainage.Tak‐ing the daily operation optimization of single unit in drainage pumping station as an example,the influences of different shutdown constraints on the results of variable angle optimization are analyzed,and the optimal operation suggestions are put forward respectively for different drainage scenarios,including daily drainage,super-standard drainage,pre-lowering water-level stage and emergency drainage stage.The research conclusion provides a decision-making reference for the optimal scheduling scheme of drainage pumping station in flood seasons.