摘要
金沙江下游乌东德-白鹤滩-溪洛渡-向家坝梯级水库共同承担下游防洪任务,规划设计阶段没有考虑水库防洪库容之间的互补等效关系。基于水量平衡原理及总防洪库容不变假设,对梯级水库的防洪库容进行聚合分解,以发电为主要目标推导了两库和多库情况下梯级水库防洪库容优化配置公式,并采用数值求解。结果表明:把库容较小的乌东德和向家坝水库的防洪库容分别优化配置11.80亿、2.16亿m3给库容较大的白鹤滩和溪洛渡水库,乌东德-白鹤滩和溪洛渡-向家坝聚合系统7月和8月可分别增发电量4.45亿、0.32亿kW·h;金沙江下游四库防洪库容联合优化配置,年均发电量可增加10.37亿kW·h,经济效益十分显著。
The Wudongde-Baihetan-Xiluodu-Xiangjiaba cascade reservoirs in the lower Jingsha River shoulder the downstream flood control tasks jointly,and the complementary equivalent relationship between the flood prevention storage of these reservoirs is not considered during the planning and design stage.Based on the principle of water balance and the assumption of total flood prevention storage unchanged,the flood prevention storage of cascade reservoirs was aggregated and decomposed.The optimal allocation calculation formulas for two-reservoir and multireservoir systems were derived and solved numerically with power generation as the main objective.Results show that the Wudongde and Xiangjiaba reservoirs with relatively small storage allocate about 1.180 and 0.216 billion m3 of the flood prevention storage to the Baihetan and Xiluodu reservoirs respectively,which can generate extra 445 and 32 million kW·h hydropower from July to August for the Wudongde-Baihetan and the Xiluodu-Xiangjiaba aggregation systems.Joint and optimal allocation of flood prevention storage for the four cascade reservoirs can increase 1.037 billion kW·h hydropower annually from July to August,yielding significant economic benefits.
作者
谢雨祚
郭生练
钟斯睿
刘攀
王俊
李帅
胡挺
XIE Yuzuo;GUO Shenglian;ZHONG Sirui;LIU Pan;WANG Jun;LI Shuai;HU Ting(State Key Laboratory of Water Resources Engineering and Management,Wuhan University,Wuhan 430072,China;Operation and Administration Center for River Basin Hydro Complex,China Three Gorges Corporation,Yichang 443133,China)
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2023年第4期520-529,共10页
Advances in Water Science
基金
国家重点研发计划资助项目(2021YFC3200305)
中国长江三峡集团有限公司资助项目(0799254)。
关键词
防洪库容
梯级水库
聚合分解
优化配置
公式推导
金沙江下游
flood prevention storage
cascade reservoir
aggregation-decomposition
optimal allocation
formulas derivation
downstream Jingsha River
