清江梯级水电站实时负荷分配模型研究  

Real-time load distribution models for the Qingjiang cascade hydropower plants

作　　者：郭富强[1] 郭生练[1] 刘攀[1] 李响[1] 陈炯宏[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《水力发电学报》2011年第1期5-11,共7页Journal of Hydroelectric Engineering

基　　金：国家十一五科技支撑计划(2008BAB29B09;2009BAC56B02)资助项目

摘　　要：本文提出两种梯级水电站实时负荷分配模型,模型Ⅰ根据站间和厂内水量电力平衡分配站间负荷,检验站间联合躲避不可调控区和防止负荷大规模转移等约束满足情况并制定开停机策略,以梯级电站水位能消耗最少为目标调整初始分配继而实现厂内经济运行;模型Ⅱ根据聚合分解思想将梯级水电站系统分为若干组对偶子系统,每组对偶系统聚合为虚拟电站直接以机组为基本分配单元优化目标函数。清江梯级电站实时运行仿真计算结果表明,模型Ⅰ和模型Ⅱ能降低隔河岩电站和高坝洲电站耗水分别为1.35%,1.45%和0.95%,1.6%;减少隔河岩机组穿越振动区分别为9.83%和17.3%。两种模型既可显著增加电站经济效益又能大幅提高运行安全性。Two real-time load distribution models for the Qingjiang cascade hydropower plants are proposed and discussed in this paper.Models I distributes initial load to each power plant according to the inter-plant and inner-plant balances of water and power.If the constraint conditions of avoiding inter-plant combined non-operation area or the conditions of large-scale load transfer are satisfied,then the model gives unit startup-shutdown strategy and inner-plant economical operation based on the objective function of minimum hydropower consumption for cascade hydropower plants.Model II divides the cascade plants into several dual subsystems by aggregation and decomposition methods,and each subsystem is aggregated as a virtual power plant to optimize its object function with a generating set as a basic unit.The simulation results show that model I can save water by 1.35% and 1.45% for the Geheyan and Gaobazhou hydropower plants,respectively,and that model II by 0.95% and 1.6%.The non-operation area crossing of the Geheyan units is reduced by 9.83% and 17.3%.Thus the economic benefit and operation security of hydropower plants are significantly enhanced by the two proposed models.

关 键 词：水电工程 梯级电站 实时运行 负荷分配 不可调控区 

分 类 号：TV697.12[水利工程—水利水电工程]