System model development and numerical simulation of low-head pumped hydro storage

Conference paper (2023)

Authors

Justus Hoffstaedt Offshore and Dredging Engineering - Mechanical, Maritime and Materials Engineering
A. Jarquin Laguna Offshore and Dredging Engineering - Mechanical, Maritime and Materials Engineering
Jonathan Fahlbeck Chalmers University of Technology
H. Nilsson Chalmers University of Technology
Research Group
Offshore and Dredging Engineering (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2023 Justus Hoffstaedt, A. Jarquin Laguna, J. Fahlbeck, H. Nilsson
DOI: https://doi.org/10.1201/9781003360773-85
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Published Date

2023

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Marine and Transport Technology

Research Group

Offshore and Dredging Engineering

Abstract

To tackle the growing demand for grid-scale energy storage, the ALPHEUS project proposes a novel low-head pumped hydro storage system aimed for coastal application in countries where the topography does not allow for traditional high-head storage. This system consists of a reversible pump-turbine technology with two contra-rotating runners coupled to their respective axial-flux motor-generators as well as a dedicated control, optimising for energy balancing and the provision of ancillary services. To better understand the integration and dynamic interaction of the individual components of the plant and to allow for the simulation of a wide variety of operating conditions and scenarios, this research aims at developing a system model coupling the hydraulic, mechanical and electrical components. Numerical results are compared and verified based on CFD simulations. While some inaccuracies have to be expected, the comparison shows an overall good match with only minor deviations in dynamic behaviour and steady state results.

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- Embargo expired in 01-07-2023