Flow-Induced Instabilities in Pump-Turbines in China
Engineering, 2017 The stability of pump-turbines is of great importance to the operation of pumped storage power (PSP) stations. Both hydraulic instabilities and operational instabilities have been reported in PSP stations in China.
Zhigang Zuo, Shuhong Liu
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Journal of Marine Science and Engineering, 2023 As a core component of pumped storage power plants for hydro and marine power storage, this paper investigates the mechanism of pressure pulsation fluctuations under different load conditions to improve the efficiency and operational stability of the ...
Jiahao Lu +4 more
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The pump as a turbine: A review on performance prediction, performance improvement, and economic analysis [PDF]
HeliyonPumps as Turbines (PATs) are known for their ability to replace conventional turbines in Pico/micro-hydropower plants. However, selecting a suitable pump and estimating its performance in reverse mode is a challenging task. The overall efficiency of PATs
Abdulbasit Nasir +2 more
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A new method for regulating Pelton turbine based on ejection of discharged flow [PDF]
E3S Web of Conferences, 2023 Hydropower plants (HPPs) contribute a significant share of Russia’s electricity generation. With the prospects of developing this sector and harnessing the hydroenergy potential, it is necessary to consider methods for modernizing hydroelectric ...
Liamasov A K, Denisov K E, Biriulin M A
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Archimedean screw as fish-friendly turbines for harnessing hydropower potential [PDF]
E3S Web of Conferences, 2021 Hydraulic energy is one of the most important sources of renewable energy today. It is also a complementary source to other renewable energy sources, being the only one that offers an important nonpolluting storage capacity (through pump storage ...
Purece Cristian, Corlan Lilica
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Energies, 2020 In load rejection transitional processes in pumped-storage plants (PSPs), the process of closing pump turbines, including guide vane (GVCS) and ball valve closing schemes (BVCS), is crucial for controlling pulsating pressures and water hammer.
Jiawei Ye +4 more
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An Analysis of the Minimum Pressure Coefficient Criterion Applied to the Axial-flow Pump Design – A Case Study for a Circulating Water Channel [PDF]
Journal of Applied Fluid Mechanics, 2023 An analysis of the minimum pressure coefficient on the suction side of the axial-flow pump blades is presented as a design criterion. A Matlab code is used to improve the computer aided design process efficiency and quality.
R. V. Correia Ramalho +2 more
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Optimal parameters of elliptical groove gas film face seal with bidirectional rotational characteristics [PDF]
International Journal of Fluid EngineeringThe performance of gas film face seals is substantially affected by the geometric features of the texture on the seal face. To enhance the design of elliptical groove face seals for efficient bidirectional rotation, a comprehensive theoretical analysis ...
Yuansen Song +3 more
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Detection of hydraulic phenomena in francis turbines with different sensors [PDF]
, 2019 Nowadays, hydropower is demanded to provide flexibility and fast response into the electrical grid in order to compensate the non-constant electricity generation of other renewable sources.
Egusquiza Estévez, Eduard +4 more
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Internal Flow Phenomena of Two-Way Contra-Rotating Axial Flow Pump-Turbine in Pump Mode under Variable Speed [PDF]
Journal of Applied Fluid Mechanics, 2022 This paper investigated the variable speed operation of a two-way contra-rotating axial flow pump–turbine in pump mode. When counter-rotating impellers operate at the same speed, a significant difference exists in the shaft power of the two impellers ...
C. An +5 more
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