泵站电站进水口分层布置下泵站开启对电站运行影响研究  

Effect of Opening the Pumping Station on the Hydropower Operation with Multi-level Water Intake

作　　者：韩继斌[1] 任坤杰[1] 杨青远[1] 

机构地区：[1]长江科学院水力学研究所,武汉430010

出　　处：《长江科学院院报》2013年第8期1-4,共4页Journal of Changjiang River Scientific Research Institute

摘　　要：泵站、电站进水口分层布置,可充分利用河谷宽度,减少工程开挖量。但在此布置下,泵站开启过程对电站进水口可能形成不利的水流流态,影响电站的正常运行。针对以上问题,结合动网格技术,采用k-ε紊流模型对某枢纽泵、电站分层布置进水口水力特性进行了三维数值模拟,通过分析电站进水口附近水体的压力变化,解析泵站开启对电站正常运行的影响。结果表明泵站开启过程对电站正常运行有一定的影响。The multi-level intake of pumping station and hydropower station makes full use of the river valley width and reduces the amount of engineering excavation. However, the opening of pumping station＇ s valve might give rise to adverse water flow pattern at the intakes and affect the normal operation of hydropower station. By employing dy- namic mesh technique and adopting k-ε eddy flow model, we carried out 3-D numerical simulation on the hydraulic characteristics at the multi-level intakes of a pumping station and hydropower station. By analyzing the water pres-sure variation in the vicinity of the intakes, we conclude that the opening of pumping station＇ s valve have certain impact on the normal operation of hydropower station. Under the same reservoir water level, the maximum water pressure fluctuation when the gate is gradually opened is half of that when the gate is instantaneously opened.

关 键 词：泵站 电站进水口 分层布置 泵站开启 压力变化 

分 类 号：TV732.1[水利工程—水利水电工程]