Publication
CFD simulations of hydraulic short-circuits in junctions, application to the Grand’Maison power plant
Related publications (47)
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Hydraulic short circuit (HSC), corresponding to the simultaneous operation of the pumps and turbines, enhances the power flexibility of a pumped storage power plant (PSPP). However, comprehensive analyses are imperative to guarantee a secure and reliable o ...
Elsevier Sci Ltd2024CFD simulations of a Y-junction for the implementation of hydraulic short-circuit operating mode
François Avellan, Cécile Münch-Alligné, Daniel Biner
In the framework of the XFLEX HYDRO H2020 European Project, one of the demonstrators focuses on the implementation of the hydraulic short-circuit on the pump storage power plant of Grand-Maison owned by Electricite De France (EDF). The Grand-Maison power p ...
IOP PUBLISHING LTD2021Optimal CAM Computation of Kaplan Turbines Accounting for Wear and Tear Originated by Frequency Control
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IEEE2021Numerical simulations of Pelton turbine flow to predict large head variation influence
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In the framework of the new feed-in-tariff system in Switzerland for Small Hydropower Plants (SHP), the aim of the SmallFLEX project, led by HES-SO Valais and performed in collaboration with EPFL, WSL, EAWAG, PVE, and FMV, is to show how SHP can provide wi ...
IOP PUBLISHING LTD2021Predicting the dynamic behavior of Francis turbine generating units
To reduce CO2 emissions and tackle global warming, an increasing amount of electrical power consumed around the world must be obtained from renewable sources. Among these sources, hydropower has not only the advantage of leaving a very small carbon footpri ...
EPFL2019Procedure for predicting part load resonance in Francis turbine hydropower units based on swirl number and local cavitation coefficient similitude
François Avellan, Christophe Nicolet, Arthur Tristan Favrel, Christian Landry, Sébastien Alligné, Loïc Andolfatto
Francis turbines operating at part load conditions develop a cavitation precessing vortex known as a vortex rope in the draft tube cone below the runner outlet. At part load conditions, this vortex precession acts as an excitation source inducing pressure ...
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD2019Reduced scale model testing for prediction of eigenfrequencies and hydro-acoustic resonances in hydropower plants operating in off-design conditions
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The massive penetration of the electrical network by renewable energy sources, such as wind and solar, pushes the operators to extend hydropower plant units operating range to meet the transmission system operator requirements. However, in off-design opera ...
2019Improving hydropower flexibility by synergizing independently managed utilities
Giovanni De Cesare, Pedro Filipe De Almeida Manso, Sabine Chamoun, Vincent Gaertner, Steve Crettenand
Increasing the flexibility of hydropower allows operators to produce at optimal time ranges, not only dependent on the demand flow but also on the price trends. However, the possibility to improve hydropower flexibility can be hindered when assets are mana ...
Hydropower&Dams, Aqua Media International2019Model testing beyond the scope of International Standards: an outlook.
François Avellan, Loïc Andolfatto
The roles of hydropower plants within the energy system has been evolving during the last two decades. The potential to provide ancillary services to the grid is often harnessed, leading to a major change in hydropower plants operations. Ancillary services ...
2018Measurements of Cavitation Compliance in the Draft Tube Cone of a Reduced Scale Francis Turbine Operating at Part Load
François Avellan, Christophe Nicolet, Arthur Tristan Favrel, Christian Landry, Joao Gomes Pereira Junior
Francis turbines operating at part load conditions typically experience a cavitation vortex rope immediately at the runner outlet. As the compliance of this cavitation flow is much higher than the one in cavitation-free conditions, a decrease in the value ...
2018