抽水蓄能电站同发同抽运行下竖井式进/出水口的水力特性研究  

Study on Hydraulic Characteristics of Shaft Inlet/Outlet Based on Single-Shot and Single-Pump Storage Station

作　　者：徐振鹏 陈青生[1] 徐津[1] XU Zhen-peng;CHEN Qing-sheng;XU Jin(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学水利水电学院,江苏南京210098

出　　处：《水电能源科学》2025年第2期181-185,共5页Water Resources and Power

基　　金：国家重点研发计划(2022YFC3202604);国家自然科学基金项目(52379087);中央高校基本科研业务费专项(B230202002)。

摘　　要：抽水蓄能电站具有灵活的运行方式,有时需采用不同水力单元机组同时处于发电和抽水的运行方式,以改善电网的供电质量。为研究同发同抽运行时竖井式进/出水口的水力特性,基于某抽水蓄能电站上水库竖井式进/出水口的体型及设计参数,采用水动力模型方法,开展了两水力单元在同发同抽运行工况下的数值仿真计算,对孔道流量分布、流速分布及其不均匀性以及进、出流水力单元的间距进行了分析。结果表明,同发同抽运行工况下两水力单元间水流的“短路”流动将加剧进流水力单元孔道流量分布的不均匀性,对出流水力单元的流量分布、孔道流速分布基本不产生影响;同发同抽运行工况下两水力单元间的相对间距大于13.1时,进流水力单元的这种流量不均性将会得到解决。The pumped storage power station has a flexible operation mode.Sometimes it is necessary to use the operation mode of power generation and pumping between different hydraulic units to improve the power supply quality of the power grid.In order to study the characteristics of the shaft inlet/outlet under the operation of simultaneous pumping,based on design parameters of the shaft inlet/outlet of a pumped storage power station,this paper utilizes the hydrodynamic model method to carry out the hydraulic characteristics of the two hydraulic units of the shaft inlet/outlet under the operation of simultaneous pumping.Through the analysis of the channel flow distribution,velocity distribution and its inhomogeneity,the spacing between the inlet and outlet hydraulic units,it is concluded that the"short circuit"flow of water flow between the two hydraulic units under the same pumping operation mode will aggravate the inhomogeneity of the channel flow distribution of the inflow hydraulic unit,and will not affect the flow distribution and channel velocity distribution of the outflow hydraulic unit.When the relative spacing between the two hydraulic units is greater than 13.1,the flow unevenness of the inlet hydraulic unit will be solved.

关 键 词：抽水蓄能电站 同发同抽 竖井式进/出水口 水力特性 数值模拟 

分 类 号：TV734[水利工程—水利水电工程]