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水力发电学报 ›› 2019, Vol. 38 ›› Issue (8): 27-36.doi: 10.11660/slfdxb.20190803

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金沙江梯级与三峡水库群联合蓄水优化调度

  

  • 出版日期:2019-08-25 发布日期:2019-08-25

Joint and optimal impoundment oepration of Jinsha River's cascade reservoirs and Three Gorges Reservoir

  • Online:2019-08-25 Published:2019-08-25

摘要: 依据长江上游流域水文气象特征,确定各水库提前蓄水时机。建立了基于防洪、发电和蓄水的多目标调度模型,采用Pareto存档动态维度搜索算法(PA-DDS)优化求解,得到一系列非劣优化蓄水方案。结果表明:在不降低原设计防洪标准前提下,乌东德、白鹤滩、溪洛渡、向家坝和三峡水库的优化起蓄水时间可分别提前至8月1日,8月1日,9月1日,9月1日和9月10日,与原设计方案相比,优化方案蓄水期年均发电量可增加36.82亿kW?h,增幅3.12%;水库蓄满率达95.09%,提高3.38%。对于蓄水期为平、枯水年份,各水库蓄水时间可进一步提前至8月1日,8月1日,8月25日,8月25日和9月1日,蓄水期年均发电量可增加45.75亿kW?h,增幅4.10%;蓄满率由88.52%提高至93.89%,经济效益显著。

关键词: 梯级水库群, 提前蓄水, 联合调度, 防洪风险, 优化调度图

Abstract: Based on the hydrologic and meteorological characteristics of the upper Yangtze basin, the timing of reservoir early impoundment is determined in this work. We construct a multi-objective impounding operation model and solve it using a Pareto-archived dynamically dimensioned search (PA-DDS) algorithm to obtain a series of Pareto fronts. The results demonstrate that when an optimal joint impounding scheme is applied, the starting impoundment dates of Wudongde, Baihetan, Xiluodu, Xiangjiaba and Three Gorges reservoirs can be advanced up to Aug. 1, Aug. 1, Sep. 1, Sep. 1 and Sep. 10 respectively, without lowering the design flood control standard. The proposed scheme can generate 3.68 billion kW?h more power (increase 3.12%) annually in comparison with the designed impounding rules and improve the full storage rate to 95.1% (increase 3.38%). For normal and dry years, these starting impoundment dates can be further advanced to Aug. 1, Aug. 1, Aug. 25, Aug. 25 and Sep. 1, which can generate 4.58 billion kW.h extra power (increase 4.1%) and the full storage rate increases from 88.5% to 93.9%.

Key words: cascade reservoirs, early impoundment, joint operation, flood control risk, optimized impounding rule

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