基于低位水箱调度的二级泵站供水能耗优化

ENERGY CONSUMPTION OPTIMIZATION OF SECONDARY PUMPING STATION BASED ON LOW-LEVEL WATER TANK SCHEDULING

充分利用二次供水系统中低位水箱的调蓄功能,构建了供水管网优化调度模型,旨在降低水厂二级泵站能耗。模型采取分步优化策略,依次实现低位水箱与二级泵站的优化调度。首先,建立二次规划模型,得出低位水箱进水阀门调控指令及管网理想供水流量;再以理想供水流量与扬水能耗为优化目标,同时耦合反馈调整,构建基于NSGA2算法的二级泵站多目标优化模型。将模型应用于SZ市GS区供水管网实例,结果显示:低位水箱与二级泵站联动调度相较仅单纯调控水泵,可削减约7.7%供水能耗。所构建的模型可为探索供水管网全系统优化调度提供理论参考。

Aiming to reduce the energy consumption of the secondary pumping station,this study made full use of the regulation and storage function of the low-level water tank in the secondary water supply system,and built an optimal scheduling model for the water supply pipe network.The model took a step-by-step optimization strategy,and accomplished the optimal scheduling of the low-level water tank and the secondary pumping station in turn.Firstly,a quadratic programming model was established to obtain the control command of the low-level water tank inlet valve and the ideal water supply flow of the pipe network.Then,taking the ideal water supply flow and pumping energy consumption as the optimization goals,along with feedback adjustment at the same time,the optimal scheduling model of the secondary pumping station based on the NSGA2 algorithm was constructed.The model was applied to the water supply pipe network in GS District of SZ City,and the results showed that the linkage dispatch between the low-level water tank and the secondary pump station could reduce the energy consumption of water supply by about 7.7%,compared with the simple regulation of the water pump.This model provides a theoretical reference for exploring the optimal scheduling of the whole water supply network system.