| 摘要: |
| 跨流域调水泵站群是解决水资源空间配置不均的动力之源，虽然综合效益显著，但调水成本过高问题日益突出。为进一步探究泵站的经济运行，本文针对非同型机组的并联泵站，建立考虑分时电价的日优化调度模型，通过优化泵站调控时段及机组流量分配，实现并联泵站的日经济运行。以南水北调东线睢宁枢纽站为研究实例，分析流量的优化分配规律及调水成本对调控次数的响应规律。结果表明：设计扬程下，主要由睢宁二站机组适应输水流量变化；固定流量下，主要由沙集站机组适应泵站扬程变化；调控次数一定时，分时电价相较固定电价更能发挥调度潜能；分时电价下，增加日调控次数可节省更多成本，但节省幅度受约束条件限制。 |
| 关键词: 并联泵站 优化调度 经济运行 粒子群算法 分时电价 调控次数 |
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| Research on Daily Optimal Scheduling for Parallel Pumping Stations Considering Time-of-Use Electricity Price |
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QU Xie-yu1, ZHANG Zhao2, BAI Chuan-zhen3, DU Meng-ying4, TU Yi-wei5
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1.School of Civil Engineering,Tianjin University;2.China Institution of Water Resources and Hydropower Research;3.Jiangsu Water Source COLTD of the Eastern Route of South-To-North Water Diversion;4.Fluid Machinery Engineering Technology Research Center,Jiangsu University;5.State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing
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| Abstract: |
| Pumping stations using for inter-basin water transfer is the driving force for solving the uneven spatial allocation of water resources. Although the comprehensive benefits are significant, the problem of high water transfer costs is becoming increasingly prominent. In order to further explore the economic operation of pumping stations, A daily optimal scheduling model considering time-of-use electricity prices is established for parallel pumping stations with non-identical units in this paper. The daily economic operation problem on the parallel pumping stations is solved through optimizing the time period for regulating pumping stations and distributing the total discharge among each pumping unit. Taking the Suining parallel pumping station group in the Chinese East Route of the South-to-North Water Diversion Project as a case study, rules of the flow optimization allocation and water delivery costs to adjustment times response are analyzed. The results show that under the design head, the flow variations in water delivery are primarily accommodated by the units of Suining II Station; Under the fixed flow, the head variations are mainly accommodated by the units of the Shaji Station; Under a constant number of regulation times, time-of-use electricity prices can fulfil the scheduling potential more effectively compared to fixed electricity prices; Under time-of-use electricity prices, increasing the number of daily regulation times can save more costs, but the extent of savings is constrained by limiting conditions. |
| Key words: Parallel pump station Optimal scheduling Optimal scheduling Particle Swarm Optimization Time-of-use electricity price Regulating time |
