抽水蓄能电站河道型库区流态研究  

Flow Patterns in River-type Reservoirs of Pumped Storage Power Stations

作　　者：董静 周王子 程子兵[1] DONG Jing;ZHOU Wangzi;CHENG Zibing(Changjiang River Scientific Research Institute,Wuhan 430014,China;Changjiang Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430014,China)

机构地区：[1]长江水利委员会长江科学院,湖北武汉430014 [2]长江勘测规划设计研究有限责任公司,湖北武汉430014

出　　处：《中国水能及电气化》2024年第12期1-7,共7页China Water Power & Electrification

基　　金：武汉市知识创新专项曙光计划项目(2023020201020361)。

摘　　要：文章采用模型试验与数值模拟相结合的方法,对抽水蓄能电站河道型库区流态和水动力特性进行研究,并针对原方案存在的问题提出了优化方案。结果表明,在原方案死水位设计流量发电与抽水工况下,进/出水口流态顺畅,库区水面平稳,水面未见强回流或吸气漩涡等不利流态;2.5倍设计流量抽水工况下,库区水面波动较大,进/出水口上方水面出现间歇性吸气漩涡。优化方案通过延长引水前池左侧边坡的边界或在建筑物上方设置挡板,可分别阻断吸气旋涡产生的第一阶段和第二阶段,有效消除吸气漩涡。In this paper,a combination of model tests and numerical simulations is used to study the flow patterns and hydrodynamic characteristics of the river-type reservoir in a pumped storage power station.Based on the identified issues in the original plan,an optimized solution is proposed.The results indicate that under the original plan,at the design flow rate for both power generation and pumping operations at dead water level,the flow at the inlet/outlet is smooth,and the reservoir surface remains stable,with no significant adverse flow patterns such as strong recirculation or air-entraining vortices.However,under 2.5 times the design flow rate during pumping operations,the reservoir surface experiences significant fluctuations,and intermittent air-entraining vortices appear on the water surface above the inlet/outlet.The optimized plan effectively eliminates these vortices by either extending the boundary of the left-side slope of the forebay or installing baffles above the structure,thus preventing the formation of the first and second stages of air-entraining vortices.

关 键 词：抽水蓄能电站 库区流态 吸气漩涡 模型试验 数值模拟 

分 类 号：TV743[水利工程—水利水电工程]