耦合坝前水位优化的梯级水电站入库流量计算方法研究  

Study on the Calculation Method of Inflow of Cascade Hydropower Stations Considering the Optimization of Water Level in Front of the Dam

作　　者：何珊珊 蒋志强[1] 杜昊 邱斌 王超[2] HE Shan-shan;JIANG Zhi-qiang;DU Hao;QIU Bin;WANG Chao(School of Civil and Hydraulic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]华中科技大学土木与水利工程学院,湖北武汉430074 [2]中国水利水电科学研究院,北京100038

出　　处：《水电能源科学》2024年第7期198-201,共4页Water Resources and Power

基　　金：国家自然科学基金项目(52179016);湖北省自然科学基金项目(2021CFB597)。

摘　　要：水库出入库流量对于水电站调度运行非常重要。实际生产中的水库出入库流量一般由水位、出力、闸门开度等数据结合水库水电站特征曲线求得,但受坝前水位波动等众多因素影响,水库出入库流量的正确性及流域上下游电站间的径流逻辑一致性经常遭到破坏。为解决水位波动对径流一致性的影响,以大渡河流域下游梯级水电站为例,基于多点平均水位代替单点值的思路,以区间谬误率最小为目标,建立了梯级电站多点水位取值及水量平衡计算时间点的优选模型。并基于2019年1月至2021年12月的运行数据进行了验证分析,结果发现水位优化处理后,梯级电站的区间谬误率均有不同程度降低,其中深枕区间与龚铜区间效果最好,深枕区间下降幅度约为40%,龚铜区间下降幅度约为30%。研究成果可为其他流域的相关研究提供参考。The inflow and outflow of reservoirs are very important for the operation of hydropower stations.The inflow and outflow of reservoirs in actual are generally calculated by combining data such as water level,output,and gate opening with the characteristic curves of reservoirs and hydropower stations.However,due to various factors such as water level fluctuations in front of the dam,the correctness of the inflow and outflow of the reservoir and the logical consistency of runoff between upstream and downstream power stations are often disrupted.In view of this,this article takes the cascade hydropower stations in the lower reaches of the Dadu River Basin as an example to address the impact of water level fluctuations on the runoff consistency.Based on the idea of replacing single point values with multi-point average water level values,with the goal of minimizing interval fallacy rate,a model for optimizing the multi-point water level values and water balance calculation time points of each power station has been established.Based on the water level data from January 2019 to December 2021,validation analysis was conducted.The results show that after optimizing the water level,the interval fallacy rates of the cascade power stations were reduced to varying degrees.The Shenzhen interval and Gongtong interval had the best effect,with a decrease of about 40%in the Shenzhen interval and about 30%in the Gongtong interval.The research results can provide reference for relevant research in other basins.

关 键 词：径流逻辑 水位优化 水量平衡 坝前水位 水位波动 大渡河流域 

分 类 号：TV697.1[水利工程—水利水电工程]