基于改进多目标粒子群算法的南水北调东线江苏段工程联合优化调度研究

针对南水北调东线江苏段工程优化调度问题,构建协调系统缺水量和抽江水量两目标的联合优化调度模型,研发基于改进多目标粒子群算法的模型求解方法,建立组合赋权-TOPISIS方法进行多属性决策方法,形成基于"两线-三湖-四水源-六区间"的水资源调配空间格局,提出以大型泵站工程为核心的骨干枢纽联合调度方案。在50%、75%和95%来水条件下,经优化调度后受水区缺水量与常规调度相比分别降低了10.2×10~8m~3、16.4×10~8m~3、7.1×10~8m~3,系统抽江水量分别减少了17.4×10~8m~3、14.8×10~8m~3和12.2×10~8m~3。该方案可有效提高供水保障水平,充分发挥三大湖泊的调蓄能力,降低系统运行成本,具有显著的社会、经济等综合效益。

Study on optimal operation of Jiangsu section of estern route of South-to-North Water Diversion Project based on improved multi-objective particle swarm optimization algorithm

This paper is to develop the joint optimization and dispatching model of the Jiangsu section of the east line of the South-to-North Water Diversion Project, to explore the multi-objective particle swarm optimization algorithm, and to propose the multi-attribute TOPSIS decision-making method and an optimal scheduling scheme based on the large pumping station projects. The results show that the optimal scheduling scheme can effectively improve the utilization efficiency of water resources, giving full play to the storage capacity of the three lakes and reduce the pumping cost. With the inflow of 50%, 75% and 95%, the water shortages were reduced by 1.02 billion m³, 1.64 billion m³, and 0.71 billion m³ respectively, compared with the conventional dispatching. The pumping amount of the system could be reduced by 1.74 billion m³, 1.48 billion m³ and 1.22 billion m³, respectively, which has significant social, economic and other comprehensive benefits.