Zobrazeno 1 - 10
of 1 329
pro vyhledávání: '"pump turbine"'
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 11, Pp 2361-2376 (2024)
Due to the important strategic position of Pumped Storage Power Plants (PSPP) in global energy upgrading, conducting in-depth research on the various operating conditions of pump turbine units is important for their safe and stable operation. This st
Externí odkaz:
https://doaj.org/article/e329344238e343bba653e5fdda3992d3
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 17, Iss 9, Pp 2005-2015 (2024)
Concerning dual-carbon applications, establishing a new energy-dominated power system to achieve carbon peaking and carbon neutrality objectives is imperative. Pumped storage units excel in this context, owing to their unique advantages. During the l
Externí odkaz:
https://doaj.org/article/cb4ba5f4fbc94866b897c42805e84359
Publikováno v:
Energy Informatics, Vol 7, Iss 1, Pp 1-12 (2024)
Abstract On-line monitoring of flow rate is rather important to evaluate the water consumption of the pump-turbine and the overall efficiency of the pumped storage station. Flow rate can be worked out based on the flow differential pressure measured
Externí odkaz:
https://doaj.org/article/09de3dd7f2ce446a8e7f904f407649e2
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 18, Iss 1 (2024)
A power failure in the pump condition combined with the rejection of the guide vanes can cause the unit to runaway, which represents a dangerous transitional process for pumped storage power stations. This process is accompanied by intense oscillatio
Externí odkaz:
https://doaj.org/article/e95b04b1d7e8469f80c902967bd83b51
Autor:
Song Xue, Haolin Tian, Yongguang Cheng, Xiaoxia Hou, Ziwu Guan, Weijia Yang, Zhiyuan Wang, Zhaoning Wang, Qiyuan He
Publikováno v:
Engineering Applications of Computational Fluid Mechanics, Vol 18, Iss 1 (2024)
Hydraulic excitation causes abnormal head-cover vibration in some pump-turbines, particularly as design heads continue to rise. Pump-turbines with heads exceeding 600 m have reported such vibrations in pump mode, and it is urgent to reveal the reason
Externí odkaz:
https://doaj.org/article/5a7ca6d3115948b69e8e33d9f83973bf
Autor:
Zhe Man, Zhe Xu, Zhonghua Gui, Wenfu Han, Yifeng Zhao, Fei Zhang, Lianchen Xu, Yuan Zheng, Kan Kan
Publikováno v:
Frontiers in Energy Research, Vol 12 (2024)
In current engineering, the transition process of pump turbines from pump to turbine mode mainly includes the shutdown process of pump operating and the startup process of turbine operating, and the switching of working conditions mostly depends on t
Externí odkaz:
https://doaj.org/article/afddb3bb557d4f1989c9214c2d12f0ce
Autor:
Daan P. K. Truijen, Justus P. Hoffstaedt, Jonathan Fahlbeck, Antonio Jarquin Laguna, Hakan Nilsson, Kurt Stockman, Jeroen D. M. de Kooning
Publikováno v:
IEEE Access, Vol 12, Pp 86854-86868 (2024)
In an effort to make pumped hydropower storage (PHS) technology feasible for regions with a flat topography, recent research shows promising results using a contra-rotating reversible pump-turbine at low-head. In this study, the impact of dual variab
Externí odkaz:
https://doaj.org/article/7c24723a5b6547359ebe7e38af4ae9fd
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 1, Pp 102-116 (2024)
Abstract The reversible pump‐turbine plays an important role in hydropower stations, but pressure pulsation during their operation affects their performance and lifespan. Accurate prediction of pressure pulsation signals can provide an important ba
Externí odkaz:
https://doaj.org/article/2551adfddd2d4960998166d5f0f42b81
Publikováno v:
Symmetry, Vol 16, Iss 10, p 1277 (2024)
During the transient process of load rejection, the hydraulic pressure applied to the pump-turbine and plant concrete changes dramatically and induces high dynamic stress on the spiral case. The preloading spiral case has been widely used in large-sc
Externí odkaz:
https://doaj.org/article/3eced07047c74855853575df7405bf7e
Autor:
Kai Zheng, Liu Chen, Shaocheng Ren, Wei Xiao, Yexiang Xiao, Anant Kumar Rai, Guangtai Shi, Zhengkai Hao
Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 9, p 1654 (2024)
During the operation of a reversible pump-turbine, a hump area can easily appear under the pump condition, which will greatly affect the performance of a storage unit, with pressure pulsation being the key factor for the stable operation of a pump-tu
Externí odkaz:
https://doaj.org/article/e2f6df5acd674a2098eb64cdbbd11d95