Study of pump-turbine's pressure fluctuations at reverse pump mode

doi:10.13243/j.cnki.slxb.2015.03.012

IR > 新能源学院

	Study of pump-turbine's pressure fluctuations at reverse pump mode
	Li, Qifei1,2 ; Jiang, Lei 1,2; Li, Rennian1,2 ; Quan, Hui1,2
	2015-03-01
发表期刊	Shuili Xuebao/Journal of Hydraulic Engineering
ISSN	05599350
卷号	46 期号:3 页码:350-356
摘要	To study the pressure fluctuation characteristics of the pump-turbine at reverse pump mode, the numerical simulation which used the detached eddy simulation(DES) was carried out at reverse pump mode, based on the model pump-turbine in a pumped storage power station in China. The turbulence characteristics of the full three-dimensional flow field was investigated and compared with the experimental results. The pressure fluctuation characteristics of the model pump-turbine at reverse pump mode was analyzed. The results showed that, under reverse pump conditions, the dominating frequency between the guide vanes and runner is 0.143 fn (fn is the rotation frequency of runner) as well as the draft, and the amplitude of dominating frequency reached 12 % and 34.6 % respectively, accounted for the mixing frequency. The flow field analysis suggested that the spiral vortex structure in the draft tube was the main reason which causes this low frequency pressure fluctuation. Compared with the common operating conditions, the unsteady flow at reverse pump mode resulted in the sudden increase of the relative amplitude of pressure. As a results, it led to the unit vibration and affected the safe operation seriously. ©, 2015, China Water Power Press. All right reserved.
关键词	Computer simulation Flow fields Mixer circuits Numerical models Pumped storage power plants Detached eddy simulations Full three-dimensional Low frequency pressure Pressure fluctuation Pump-turbines Pumped storage power station Reverse pump mode Turbulence characteristics
DOI	10.13243/j.cnki.slxb.2015.03.012
收录类别	EI
语种	中文
出版者	International Research and Training Center on Erosion and Sedimentation and China Water and Power Press
EI入藏号	20151800796885
EI主题词	Hydraulic turbines
EI分类号	611.1 Hydroelectric Power Plants ; 617.1 Hydraulic Turbines ; 631.1 Fluid Flow, General ; 713.3 Modulators, Demodulators, Limiters, Discriminators, Mixers ; 723.5 Computer Applications ; 921 Mathematics
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/150405
专题	新能源学院能源与动力工程学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Fluid machinery and Systems, Lanzhou; Gansu; 730050, China
第一作者单位	新能源学院
第一作者的第一单位	新能源学院
推荐引用方式 GB/T 7714	Li, Qifei,Jiang, Lei,Li, Rennian,et al. Study of pump-turbine's pressure fluctuations at reverse pump mode[J]. Shuili Xuebao/Journal of Hydraulic Engineering,2015,46(3):350-356.
APA	Li, Qifei,Jiang, Lei,Li, Rennian,&Quan, Hui.(2015).Study of pump-turbine's pressure fluctuations at reverse pump mode.Shuili Xuebao/Journal of Hydraulic Engineering,46(3),350-356.
MLA	Li, Qifei,et al."Study of pump-turbine's pressure fluctuations at reverse pump mode".Shuili Xuebao/Journal of Hydraulic Engineering 46.3(2015):350-356.