基于试验-整数规划方法的泵站多机组变速优化

以国家南水北调东线源头泵站江都四站为例，进行泵站多机组变速优化运行探讨。提出了考虑峰谷电价、长江潮汐变化的站内多机组日变速优化运行非线性模型：在水泵设计叶片安放角不变的情况下，以站内机组耗电费用最少为目标函数，时段为阶段变量，水泵转速、开机机组台数为决策变量，日提水量为约束条件。提出了各阶段水泵转速试验选优、机组开机台数线性整数规划优化的方法对模型进行求解。优化运行结果表明：考虑峰谷电价，日均扬程7.8～3.8m，与额定运行相比，100%负荷运行时，单位提水费用节省介于-3.58%～-2.14%之间，说明在此条件下，变速优化运行效果不足以抵消变频器损耗，80%、60%负荷运行时，单位提水费用节省分别介于11.38～15.71%、24.79～29.17%之间，优化效果明显；不考虑峰谷电价，日均扬程7.8～3.8m，与额定运行相比，只有在日均扬程较低、提水负荷较小（5.8m，60%负荷；4.8m、3.8m，80%、60%负荷）时，变速优化具有一定的效益，在其余日均扬程、提水负荷条件下，变速优化运行效果均不足以抵消变频器损耗。为受潮汐影响的大型泵站多机组变速优化运行提供了新的思路。

Research on optimal operation for multi-units with variable speed in one pumping station based on the theory of experimental and integer programming method

Taking No.4 Jiangdu Pumping Station as a study case,which is one of the source stations in Eastern Route of South-to-North Water Diversion Project in China,the optimal operation of single pumping station for multiple pump units with variable speed was studied.The non-linear model of optimal daily operation for multiple pump units with variable speed was constructed with consideration of peak-valley electricity price and tides variation.Keeping the blade angle of pump unit at designed value,this model took t...