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。
Abstract
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 dynamic 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 pressure 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
Key words
pumping station /
water intake of hydropower station /
multi-level /
opening of pumping station /
pressure variation
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 陈云良,伍 超,叶 茂,等. 水电站进水口水流流态的研究 [J]. 水动力学研究与进展(A辑),2005,20(3):340-345.(CHEN Yun-liang, WU Chao, YE Mao, et al. Research for Flow Pattern in Intake of Hydroelectric Station[J]. Journal of Hydrodynamics (Ser. A), 2005,20(3):340-345.(in Chinese))
[2] 叶 茂,伍 超,杨朝晖,等. 进水口前立轴漩涡的数值模拟及消涡措施分析[J]. 四川大学学报(工程科学版),2007,39(2):36-40.(YE Mao, WU Chao, YANG Zhao-hui, et al. Numerical Simulation of Vertical Vortex at Intake and the Analysis of Anti-swirl Method[J]. Journal of Sichuan University(Engineering Science Edition), 2007,39(2):36-40.(in Chinese))
[3] 高学平,叶 飞,宋慧芳.侧式双进/出水口水流运动三维数值模拟[J]. 天津大学学报,2006,39(5):519-522.(GAO Xue-ping, YE Fei, SONG Hui-fang. 3D Numerical Simulation on the Flow in Side Inlet/Outlet[J]. Journal of Tianjin University, 2006,39(5): 519-522.(in Chinese))
[4] 张正楼,郑亚军,雷兴春,等. 抽水蓄能电站侧式双进/出水口三维数值模拟[J]. 水电能源科学,2009,27(1):158-160.(ZHANG Zheng-lou, ZHENG Ya-jun, LEI Xing-chun, et al. 3D Numerical Simulation of Flow in Two Lateral Inlet/Outlet at Pumped Storage Plant[J]. Water Resources and Power, 2009,27(1):158-160.(in Chinese))
[5] 章军军,毛根海,程伟平,等. 抽水蓄能电站侧式短进出水口水力优化研究[J]. 浙江大学学报(工学版),2008,42(1):188-192.(ZHANG Jun-jun, MAO Gen-hai, CHENG Wei-ping, et al. Hydraulic Shape Optimization on Lateral Inlet/Outlet of Pump-Storage Plant[J]. Journal of Zhejiang University(Engineering Science), 2008,42(1):188-192.(in Chinese))
[6] 李 妍,高学平,徐茂杰,等. 水电站进水口水力特性数值模拟研究[J]. 水利水电技术,2010,41(1):29-32.(LI Yan, GAO Xue-ping, XU Mao-jie,et al. Study on Numerical Simulation of Hydraulic Characteristics of Intake for Hydropower Station[J]. Hydraulic and Hydro-power Engineering, 2010,41(1):29-32.(in Chinese))
基金
国家“十一五”科技支撑项目(2008BAB29B02)
PDF(2675 KB)
