梯级水库中长期仿天然水文情势的生态流量多目标调度
Medium and Long-term Multi-Objective Operation of Cascaded Reservoirs to Maintain Ecological Flow and Simulate the Natural Hydrological Regime
投稿时间:2023-10-24  修订日期:2024-01-16
DOI:10.15928/j.1674-3075.202310240294
中文关键词:生态流量调度  动态时间规整  场景缩减  梯级水库  金沙江中游
英文关键词:ecological flow  dynamic time warping  scenario reduction  cascaded reservoirs  middle reach of the Jinsha River
基金项目:水利部重大科技项目(SKS-2022038);国家重点研发计划(2021YFC3200304)
作者单位
崔福宁 云南华电金沙江中游水电开发有限公司云南 昆明 650000 
朱 迪 长江水利委员会水文局湖北 武汉 430010 
卜 慧 长江水利委员会水文局湖北 武汉 430010 
郭 卫 长江水利委员会水文局湖北 武汉 430010 
汪 琳 长江水利委员会水文局湖北 武汉 430010 
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中文摘要:
      针对现有研究较少围绕水文情势角度开展梯级水库中长期生态流量调度的现状,基于场景缩减(SBR)技术推求的仿天然水文情势生态流量过程,以梯级水库下泄流量与生态流量的动态时间规整(DTW)距离最小为生态目标,以梯级水库发电量最大为发电目标,构建水库多目标生态流量调度模型,并采用“参数模拟?优化”思路求解,选择金沙江中游梨园、阿海、金安桥、龙开口、鲁地拉和观音岩6座梯级水库,对1953─2015年的旬径流资料开展分析研究,为梯级水库中长期生态流量调度提供参考。结果表明,推求的仿天然水文情势生态流量具有明显的季节性波动和上下游断面量级差异特征;相较梯级水库原调度方案,优化调度方案可通过径流调节,改善梯级水库中长期生态和发电效益,在不影响生态目标的状态下,可增加511亿kW·h的发电量,相应增幅为1.35%;在不影响发电目标的情况下,可减少134 253的DTW距离,相应降幅为3.85%。
英文摘要:
      At present, little research has been conducted on the medium and long-term ecological flow operation of cascaded reservoirs from the perspective of the hydrological regime. In this study, six cascaded reservoirs (Liyuan, Ahai, Jinanqiao, Longkaikou, Ludila and Guanyinyan reservoirs) on the middle reaches of Jinsha River were selected for a case study, and we studied medium and Long-term multi-objective ecological flow operation of these cascaded reservoirs. Based on 10-day runoff series for the six reservoirs from 1953 to 2015, we derived an ecological flow mimicking the natural hydrological regime using simultaneous backward reduction (SBR). The multi-objective ecological flow operation model of the cascaded reservoirs was then established with two aims; minimizing the dynamic time warping (DTW) distance of reservoir discharge and maintaining ecological flow and maximizing hydropower generation of the cascaded reservoirs. The “parameter-optimization” method was used to develop the model and optimize ecological flow. Results show that the ecological flow derived by SBR showed seasonal fluctuations and differences between upstream and downstream, similar to the natural hydrological regime. Compared with the original ecological operation of the cascaded reservoirs, the optimal operation scheme improved ecological and hydroelectric benefits through runoff regulation while increasing hydroelectrical generation capacity by 511 × 108 kW·h (1.35%) and reducing DTW distance to 134 253 (3.85%) without influencing the ecological and hydroelectric objectives. This research provides a reference for medium and long term ecological flow operation of cascaded reservoirs.
崔福宁,朱 迪,卜 慧,郭 卫,汪 琳.2024.梯级水库中长期仿天然水文情势的生态流量多目标调度[J].水生态学杂志,45(1):1-9.
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