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...

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Published in农业工程学报 Vol. 27; no. 5; pp. 156 - 159
Main Author 张礼华 程吉林 张仁田 龚懿
Format Journal Article
LanguageChinese
Published 扬州大学水利科学与工程学院,扬州,225009%扬州大学水利科学与工程学院,扬州,225009 2011
江苏省水利勘测设计研究院有限公司,扬州,225009
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ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2011.05.027

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Summary: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。
Bibliography:11-2047/S
linear integer programming; optimization; models; No.4 Jiangdu Pumping Station; variable speed; peak-valley electricity price; experimental optimization method
Zhang Lihua,Cheng Jilin,Zhang Rentian,Gong Yi(1.College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,China;2.Jiangsu Surveying and Design Institute of Water Resources Co.,Ltd.,Yangzhou 225009,China)
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 the minimal electricity cost of multiple pump units as objective function,the time period as stage variable,the pump sp
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2011.05.027