摘要
随着社会经济的发展和全球气候变暖,长江流域极端干旱事件频发,此时三峡水库保障长江中下游用水安全面临严峻挑战。旱限水位作为水库启动抗旱应急响应的重要依据,对提升长江流域抗旱减灾能力有重要意义。本文给出了三峡水库旱限水位的定义内涵与分期分级,基于参数模拟优化法构建旱限水位多目标优化模型,采用智能优化算法求解。结果表明:三峡水库汛期旱限水位的设置,较非汛期更为重要,分期6/10—7/31、8/1—9/9、9/10—30的一级旱限水位分别为154m、156.9m、164.8m。增设旱限水位后,三峡水库在蓄水、发电、供水、航运效益方面均得到不同程度提升,多年平均、枯水典型发电量分别增长1.29%、6.54%。本研究为三峡水库制定旱限水位,开展抗旱补水调度提供了技术支撑。
With the development of society and economy under global warming,extreme drought events occur frequently in the Yangtze River Basin(YRB),and the Three Gorges reservoir is faced with a severe challenge in guaranteeing water security in the middle and lower reaches of the Yangtze.Drought-limited water level(DLWL)is a crucial parameter for reservoir drought relief operation to enhance this basin’s drought mitigation capability.This paper defines the reservoir’s staged grading DLWL,and construct a multi-objective optimization DLWL model based on a parameterization-simulation-optimization framework that is solved by an intelligent optimization algorithm.The results show that the reservoir’s DLWL is more significant in flood season than non-flood seasons,and DLWL at the first grade is 154 m,156.9 m,and 164.8 m in the stages of 6/10-7/31,8/1-9/9,and 9/10-30 respectively.By implementing DLWL operation,the reservoir can improve all the benefits-in terms of impoundment,power generation,water supply,and navigation-each to a different degree.The increases in power generation will be 1.29%and 6.54%for multi-year average and typical dry year,respectively.This study would be useful for reservoir DLWL operation and drought-relief operation.
作者
樊金涛
刘攀
吴碧琼
张海荣
周丽婷
张行南
FAN Jintao;LIU Pan;WU Biqiong;ZHANG Hairong;ZHOU Liting;ZHANG Xingnan(State Key Laboratory of Water Resources Engineering and Management,Wuhan University,Wuhan 430072,China;China Three Gorges Corporation,Yichang 443133,China;Hubei Key Laboratory of Intelligent Yangtze and Hydroelectric Science,China Yangtze Power Co.,Ltd.,Yichang 443000,China;College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China)
出处
《水力发电学报》
北大核心
2025年第6期62-71,共10页
Journal of Hydroelectric Engineering
基金
国家重点研发计划(2022YFC3202804)
中国长江电力股份有限公司科研项目(Z242302054)。
关键词
水库调度
三峡水库
旱限水位
分期分级
模拟优化
reservoir operation
Three Gorges Reservoir
drought-limited water level
staged and grading
simulation-optimization
