XFLEX Hydro

Implementing flexible technologies in practice

Key words: guidelines, replicability, key performance indicators, testing, modelling

Pushing flexibility to the limit with new equipment

Key words: pumped storage, full-size frequency converters, Grande Dixence, Alpiq

Unlocking the potential of hydraulic short circuit

Key words: high head, pumped storage, hydraulic short circuit, Grand'Maison, EDF

Monetising the hidden flexibility of storage hydropower plants

Key words: smart power plant supervisor, range extension, Alto Lindoso, EDP NEW

Computation fluid dynamics investigation of the flow in junctions: application to hydraulic short circuit operating mode

Key words: CFD; RANS; hydraulic shortcircuit; OpenFOAM

CFD and FEM analysis to migrate from fixed- to variable-speed on the Alto Lindoso HPP

Key words: DFIM, FEM analysis

CFD simulations of hydraulic short-circuits in junctions, application to the Grand'Maison power plant

Key words: HSC operating mode, CFD simulations

Numerical fatigue damage analysis of a variable speed Francis pump-turbine during start-up in generating mode

Key words: variable speed, FSFC, CFD/FEA simulations

Optimization of turbine start-up sequence of a full size frequency converter variable speed pump-turbine

Key words: Full Size Frequency Converter, hydraulic transient simulations

Video

Z’Mutt demonstration project video 2021

Z’Mutt is a pumping station located in Canton Valais, Switzerland

Video

Grand'Maison demonstration project video 2021

Sitting in the French Alps, Grand'Maison is Europe’s largest pumped storage plant at 1,800 MW…

Performance assessment of linear models of hydropower plants

Key words: linearization strategies, Taylor expansion

CFD simulations of a Y-junction for the implementation of hydraulic short-circuit operating mode

Key words: HSC, CFD simulations

Turbine mode start-up simulation of a FSFC variable speed pump-turbine prototype – Part I: 1D simulation

key words: FSFC, CFD simulations

Turbine mode start-up simulation of a variable speed Francis pump-turbine prototype – Part II: 3-D unsteady CFD and FEM

Key words: FSFC, FEM analyses

Report

Recommendations towards the deployment of hydropower flexibility technologies

XFLEX HYDRO made seven key recommendations to policy makers