双江口水库对下游梯级水库群发电-航运联合调度影响研究  

The Impact of Shuangjiangkou Hydropower Station on the Joint Dispatch of Power Generation and Navigation for Downstream Cascade Reservoirs

作　　者：杨溢 徐炜[1] 谢在朝 李小杰 王苏凡 YANG Yi;XU Wei;XIE Zaichao;LI Xiaojie;WANG Sufan(Chongqing Jiaotong University River and Ocean Engineering,Chongqing 400074,China)

机构地区：[1]重庆交通大学河海学院,重庆400074

出　　处：《人民珠江》2024年第9期56-63,共8页Pearl River

基　　金：重庆市技术创新与应用发展重点项目(CSTB2022TIAD-KPX0198);重庆市水利科技项目(CQSLK-2022001、CQSLK-2022006);水利部重大科技项目(SKS-2022076);三峡后续工作项目(CQS23C00399、CQS23C00400)。

摘　　要：选取岷江流域为研究对象,按双江口水电站投产前后划分2种情景,构建SWAT水文模型和水库群联合调度模型,对比分析双江口水电站对下游梯级水库群发电与航运的影响。研究结果显示,在双江口水电站运行后,下游梯级电站入库流量显著提升,有效增加了水库兴利库容。目标水库群在每年枯水期平均发电量增加了50.59亿kW·h,其中双江口水库枯水期平均发电20.36亿kW·h,经济效益增幅超过16亿元;目标水库群年平均发电量提高了139.58亿kW·h,其中双江口水库年均发电108.69亿kW·h,经济效益增幅超40亿元。此外,岷江高场站的航运流量在不同保证率下也有所提升:90%保证率下提升了15.48%,95%保证率下提升了13.11%,98%保证率下提升了7.74%。研究结果为大型水库群枯水期联合调度及航运优化提供了重要的决策支持和理论指导。In this study,the Minjiang River Basin is selected as the research object,and the construction and operation of Shuangjiangkou Hydropower Station is taken as the time division basis,the SWAT hydrological model and the joint operation model of reservoir groups are constructed,and the impact of Shuangjiangkou Hydropower Station on the downstream cascade reservoir mass generation and shipping is compared and analyzed.The results show that after the operation of Shuangjiangkou Hydropower Station,the inflow flow of the downstream cascade power station has increased significantly,and the beneficial storage capacity of the reservoir has been effectively increased.The average power generation of the target reservoir group increased by 5.059 billion kW·h in the low water period each year,of which the average power generation of Shuangjiangkou reservoir during the low water period was 2.036 billion kW·h,and the economic benefit increased by more than 1.6 billion yuan.The average annual power generation of the target reservoir group has increased by 13.958 billion kW·h,of which the average annual power generation of Shuangjiangkou reservoir is 10.869 billion kW·h,and the economic benefit has increased by more than 4 billion yuan.In addition,the shipping flow of Minjiang High Terminal also increased under different guarantee rates:15.48%under 90%guarantee rate,13.11%under 95%guarantee rate,and 7.74%under 98%guarantee rate.The research results provide important decision support and theoretical guidance for the joint operation and navigation optimization of large reservoirs in low water period.

关 键 词：枯水期 发电量 航运流量 大渡河梯级 双江口水电站 

分 类 号：TV697[水利工程—水利水电工程]