Results 31 to 40 of about 166,217 (209)

Using a fuzzy inference system to control a pumped storage hydro plant [PDF]

, 2001
The paper discusses the development of a fuzzy inference system (FIS) based governor control for a pumped storage hydroelectric plant. The First Hydro Company's plant at Dinorwig in North Wales is the largest of its kind in Europe and is mainly used for ...
Aris, F. C., Bradley, David A., Jones, D. I., Jones, G. R., King, David J., Mansoor, S. P.   +5 more
core   +3 more sources

Lunar ISRU Energy Storage and Electricity Generation [PDF]

, 2020
The survival of the astronauts and their equipment is the priority for any long-term exploration mission to the Moon. The provision of energy during the long lunar nights is a critical part of these missions.
Fereres, Sonia, Fernández Palos, Mario, González Cinca, Ricardo, Serra, Pol, Stephenson, Keith   +4 more
core   +2 more sources

Effect of the Diameter of Pressure-Balance Pipe on Axial Hydraulic Thrust

Journal of Marine Science and Engineering, 2021
The axial hydraulic thrust has great influence on the safety and stability of a pump turbine. A common way to balance hydraulic thrust is to install a pressure-balance pipe, and the change in pipe diameter is one of the important factors affecting axial ...
Fei Zhang, Yue Lv, Zhonghua Gui, Zhengwei Wang   +3 more
doaj   +1 more source

Research on the Flow-Induced Stress Characteristics of Head-Cover Bolts of a Pump-Turbine during Turbine Start-Up

Energies, 2022
Nowadays, pump-turbine units have to experience multiple start-stops every day to balance the power production and consumption on the grid. During the transient process of turbine start-up, the hydraulic forces applied to the head-cover would change ...
Zhengwei Wang, Juwei Yang, Wei Wang, Jie Qu, Xingxing Huang, Weiqiang Zhao   +5 more
doaj   +1 more source

Stress Characteristic Analysis of Pump-Turbine Head Cover Bolts during Load Rejection Based on Measurement and Simulation

Energies, 2022
It is not uncommon for pump-turbine units in pumped storage power plants to experience load rejections due to the sudden disconnection of the generator from the power grid.
Xingxing Huang, Liu Chen, Zhengwei Wang, Haibo Li, Shunyi Chen, Kun Hu, Chengjun Li, Lan Qiu   +7 more
doaj   +1 more source

Note on the pumped storage potential of the Onslow-Manorburn depression, New Zealand [PDF]

, 2005
The Onslow-Manorburn depression in the South Island of New Zealand has possibility for development as the upper reservoir of the world's largest pumped storage scheme, as measured by an energy storage capacity of 10,200 GWh of realisable potential energy.
Bardsley, W. Earl
core   +1 more source

Opportunities for large-scale energy storage in geological formations in mainland Portugal [PDF]

, 2018
This article presents the methodology and results of the first screening conducted in Portugal to identify geological formations suitable for large-scale storage of energy from renewable sources.
Carneiro, Júlio, Matos, Catarina, Van Gessel, Serge   +2 more
core   +1 more source

Ubiquitous energy storage [PDF]

, 2005
This paper presents a vision of a future power system with "ubiquitous energy storage", where storage would be utilized at all levels of the electricity system.
Ault, G. W., Currie, R. A. F., Foote, C. E. T., McDonald, J. R., Roscoe, A. J.   +4 more
core   +1 more source

Transient Flow-Induced Stress Investigation on a Prototype Reversible Pump–Turbine Runner

Energies
Pump–turbine units with high heads are subjected to strong pressure pulsations from the unsteady transient flow in fluid channels, which can produce severe vibrations and high stresses on the pump–turbine structural components.
Dehao Zhang, Qiang Quan, Xingxing Huang, Zhengwei Wang, Biao Wang, Yunfeng Xiao   +5 more
doaj   +1 more source

Inverse-time protection method of pumped-storage unit vibration

Results in Engineering
Vibration protection is a reliable mean for safe operation of rotating machinery. In recent years, vibration protection of pumped storage unit gets more and more complicated, resulting in an increasing risk of vibration protection system failure ...
Zhang Fei, Song Xuguo, Zhong Dalin, Pan Weifeng   +3 more
doaj   +1 more source