大型复杂并联梯级泵站系统运行优化研究  

Optimal operation for large complex parallel step pumping station system based on multilayer iteration

作　　者：冯晓莉[1] 仇宝云[1] 杨兴丽[1] 申剑[1] 

机构地区：[1]扬州大学能源与动力工程学院,江苏扬州225127

出　　处：《水利学报》2012年第9期1058-1065,共8页Journal of Hydraulic Engineering

基　　金：全国百篇优秀博士学位论文作者专项基金资助项目(2007B41);国家自然科学基金资助项目(51079125);江苏省水利科技重点项目(2008048)

摘　　要：大型梯级泵站系统由输变电、泵站(包括主机组、进出水流道、进出水池、辅助设备及照明等)、输水河道等部分组成。采用多层分解-离散方法计算研究了南水北调东线长江至洪泽湖段3级复杂并联梯级泵站系统运行优化。在满足水位、流量、泵装置扬程和开机台数等相关约束条件下,以系统泵站总输入功率最小为优化目标,综合考虑输水水力损失、蒸发损失与渗漏损失,建立优化模型,采用模拟退火粒子群优化算法求解了站内优化方案,通过4层分解-离散计算,求解了长江三江营水源水位2.19m、洪泽湖水位13.5m、入湖流量为450m3/s的情况下,首段梯级泵站系统的优化运行方案,方案包括梯级之间的扬程分配、并联输水线路流量分配、各泵站抽水流量、开机台数及机组运行工况。结果表明,因受江都站站上最高通航水位8.5m的限制,当第1梯级东、西支线交汇处南运西闸大汕子处水位7.7m,第1梯级东、西支线流量比为0.13∶0.87,第3梯级南、北支线入洪泽湖流量比为200∶250时,系统运行方案最优,较原设计方案减少运行功率6.83%。Large pumping station system is constituted by power transmission and transformation engineering, pumping stations （including main pump units, inlet and outlet passages, inlet and outlet ponds, auxiliary equipment and lighting etc.） and water transferring. Optimum operation was researched by multilayer decomposition-discretization for complex parallel pumping station system with three steps, which is from the Yangtze River to the Hongze Lake in the Eastern Route of the South-to-North Water Transfer. Aiming at the least input power of the pumping station system, optimal models were established with the constraints of water level, discharge, pump assembly head, and the number of operating unit etc. Also, hydraulic loss, evaporation loss and leakage loss were considered comprehensively for water transferring. When Sanjiangying water level of the Yangtze River is 2.19m, water level of the Hongze Lake is 13.5m, and inlet discharge of Hongze Lake is 450m^3/s, optimum operation schemes were obtained including head distribution among steps, discharge distribution among parallel water lines, pumping discharge of each pumping station, the number of running unit and operation duties by four layer decomposition-discretization, and optimal schemes of the stations by simulated annealing particle swarm optimization. The results indicate that because of being limited by the highest navigable water level 8.5m of ,Jiangdu pumping station upstream, system operation scheme is the optimum when the water level of Dashanzi is 7.7m in the interchange of east and west branch line of the first step near west gate of south canal, the discharge ratio is 0.13：0.87 of east and west branch line of the first step, and inflow discharge ratio is 200：250 of south and north branch line of the third steps. The operating power in the optimum scheme is saved 6.83% less than that in the original design scheme.

关 键 词：复杂并联梯级泵站系统 系统能耗 优化运行 模拟退火粒子群算法 多层分解-离散 

分 类 号：TV675[水利工程—水利水电工程]