低水头大型水利枢纽汛期运行水位动态控制方法研究与应用--以长洲水利枢纽为例  

Research and application of dynamic operating water level control method during flood season for large low-waterhead hydraulic project:A case study of Changzhou Multi-purpose Hydroproject

作　　者：赵璧奎[1,2,3,4] 邱静 黄本胜[1,2,3,4] 谭超 刘达[1,2,3,4] ZHAO Bikui;QIU Jing;HUANG Bensheng;TAN Chao;LIU Da(Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510610,China;Guangdong Key Laboratory of Hydrodynamic Research,Guangzhou 510610,China;State Joint Engineering Laboratory of Estuary Hydraulics,Guangzhou 510610,China;Guangdong Provincial Science and Technology Collaborative Innovation Center for Water Safety,Guangzhou 510610,China)

机构地区：[1]广东省水利水电科学研究院,广东广州510610 [2]广东省水动力学应用研究重点实验室,广东广州510610 [3]河口水利技术国家地方联合工程实验室,广东广州510610 [4]广东省水安全科技协同创新中心,广东广州510610

出　　处：《水利学报》2023年第5期530-540,共11页Journal of Hydraulic Engineering

基　　金：粤港水安全保障联合实验室项目(2020B1212030005);广东省水利科技创新项目(2022-01,2021-01,2017-13);广东省基础与应用基础研究基金项目(2022A1515010898);广州市科技计划项目(202201011541);省属科研机构稳定性支持专项资金院自设课题(2021L027,22403)。

摘　　要：水库汛期运行水位动态控制是促进雨洪资源利用、缓解水库防洪与兴利之间矛盾、提高水电站综合效益的重要手段。本文以长洲水利枢纽为例,针对低水头大型水利枢纽调度过程中面临库区上游淹没制约、下游尾水顶托、机组出力受限等多约束问题,构建了适用于此类工程的防洪与发电多目标联合优化调度模型,提出基于淹没临界控制线的调洪演算方法和发电流量逐次分配优化求解方法。通过长系列模拟演算和多方案对比分析发现,与常规方案相比,采用运行水位动态控制方案可以使枢纽汛期平均发电水头提升6.88%、平均发电量增加8.75%,经济效益显著。研究方法对低水头大型水利枢纽防洪与发电联合优化调度具有借鉴意义。Dynamic control of water level of dam operation during the flood season is an important means to promote the utilization of rain and flood resources,alleviate the contradiction between reservoir flood control and benefit,and improve the comprehensive benefit of a hydropower station.Taking the Changzhou Multi-purpose Hydroproject as an example,a multi-objective joint optimization dispatch model for flood control and power generation suitable for such projects was constructed in view of the multi-constraint problem of inundation in upstream areas,tailwater jacking in downstream areas and limited unit output occurring in the dispatch process of large hydroproject with low-waterhead,and a flood rooting method based on the submergence critical control line and an optimized solution method for successive distribution of power generation flow were proposed.Through long series simulation calculations and comparative analysis of multiple schemes,it is found that compared with the conventional scheme,the utilization of the dynamic control of operating water level could increase the average power generation head of the hydroproject by 6.88%and the average power generation by 8.75%in flood season,turning out significant economic benefits.This research method could serve as reference for flood control and power generation joint optimal operation of large-scale hydroprojects with low-waterhead.

关 键 词：低水头 洪水调度 水位动态控制 发电调度 长洲水利枢纽 

分 类 号：TV213.9[水利工程—水文学及水资源]