摘要
针对南水北调东线工程江苏段向省内受水区输水时遭遇的供水时空不均衡问题,同时为了增加工程运行的综合效益,提高工程的供水均衡性,建立了以受水区综合缺水率最小、泵站总抽水量最小、缺水率时间标准差最小、缺水率空间标准差最小为目标的多目标优化调度模型,并采用NSGA-Ⅲ算法求解优化调度模型,运用基于层次分析法与TOPSIS法的组合赋权法进行方案优选。结果表明:相较于常规调度方案,优化调度方案的南水北调东线工程江苏段受水区的供水率得到明显改善,在95%、75%和50%来水频率下,综合缺水率分别下降了9.2%、8.2%和10.5%;泵站总抽水量在95%、75%来水频率下增加了21.6%、15.4%,在50%来水频率下下降了39.4%;受水区供水时空均衡性明显提高,在95%、75%和50%来水频率下缺水率时间标准差、缺水率空间标准差均显著降低,不同受水区不同时段缺水率分布范围更均匀集中。
The Jiangsu section of the eastern route of the South-to-North Water Transfer(JE-SNWT)Project is prone to encounter the problem of spatiotemporal unbalanced water supply when transferring water to the water receiving area inside the province.In order to increase the comprehensive benefits of the project operation and improve the water supply balance of the project,this paper established a multi-objective optimization scheduling model with the minimum comprehensive water shortage rate in the water receiving area,the minimum total pumping volume of the pumping station,the minimum standard deviation of the water shortage rate in each period,and the minimum standard deviation of the water shortage rate in each water receiving area.The NSGA-Ⅲalgorithm was used to solve the optimization scheduling model,and the combination weighting approach based on the analytic hierarchy process and the TOPSIS method was used to optimize the scheme.The results showed that compared with the conventional scheduling scheme,the water supply rate of the water receiving area in Jiangsu section of the eastern route of the South-to-North Water Diversion Project in the optimized scheduling scheme was significantly improved.Under the 95%,75%and 50%water frequency,the comprehensive water shortage rate decreased by 9.2%,8.2%and 10.5%,respectively.The total pumping volume of the pumping station increased slightly by 21.6%and 15.4%at 95%and 75%inflow frequencies,and decreased significantly by 39.4%at 50%inflow frequency.The spatial and temporal balance of water supply in the water receiving area was obviously improved.The standard deviation of water shortage rate in each period and the standard deviation of water shortage rate in each water receiving area were significantly reduced under 95%,75%and 50%water frequency.The distribution range of water shortage rate in different periods in different water receiving areas was more uniform and concentrated.
作者
方国华
李智超
钟华昱
张劲松
闻昕
孙洪滨
黄显峰
FANG Guohua;LI Zhichao;ZHONG Huayu;ZHANG Jinsong;WEN Xin;SUN Hongbin;HUANG Xianfeng(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China;Water Resources Department of Jiangsu,Nanjing 210029,China)
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第3期10-18,共9页
Journal of Hohai University(Natural Sciences)
基金
江苏水利科技项目(2020005,2019027)。
关键词
供水均衡性
NSGA-Ⅲ算法
组合赋权法
多目标优化调度
南水北调东线工程
water supply balance
NSGA-Ⅲalgorithm
combination weighting approach
multi-objective optimal operation
eastern route of the South-to-North Water Diversion Project
