梯级库群水流滞后性影响的日优化调度模型研究  

Daily optimal operation model of cascade reservoirs considering delay of flow propagation

作　　者：钟平安[1,2] 张金花 徐斌[2] 张梦然[2] 

机构地区：[1]河海大学水资源高效利用与工程安全国家工程研究中心,南京210098 [2]河海大学水文水资源学院,南京210098 [3]嘉兴市世纪交通设计有限公司,浙江嘉兴314000

出　　处：《水力发电学报》2012年第4期34-38,共5页Journal of Hydroelectric Engineering

基　　金：国家科技支撑计划课题(2009BAC56B03);国家自然科学基金(51179044);全球变化研究国家重大科学研究计划(973计划)(2010CB951102)

摘　　要：水流滞时的存在导致梯级水电站调度期内的水量不平衡,给梯级水电站短期联合优化调度造成困难。基于水量平衡原理建立了考虑调度期和滞后期综合效益的梯级水电站优化数学模型,给出了调度期与滞后期水量发电效益的计算方法;针对所建立的优化模型具有的有后效性问题,提出了轮库迭代与POA相结合求解方法,并推导出迭代通式。以三峡梯级为例开展了实证研究,取得了合理的结果。文中提出的方法结构简单,具有较好的通用性,对考虑时滞的梯级电站的日计划制定具有一定的参考价值。Delay of water flow propagation in river channel causes difficulty in the study of short-term optimal operation scheme of cascade reservoirs as it gives rise to an unbalance in water quantity during schedule period. To handle that difficulty, this paper develops a model for optimization of the comprehensive benefits in both schedule period and delay period （i. e. , out of schedule period）, This model doesn＇t possess Markov property, and a combinational progressive optimality algorithm （POA） with consecutive iterations on reservoirs can be used to solve it. A case study of the Three Gorge cascade reservoirs is used for its validation. The results show that it is a simple and reasonable model applicable to design of short-term optimal operation of cascade reservoirs influenced by water flow delay.

关 键 词：水力发电 水库优化调度 水流时滞 三峡梯级水电站 

分 类 号：TV697[水利工程—水利水电工程]