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Energy production from tidal currents in an estuary: A comparative study of floating and bottom-fixed turbines

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  • Sánchez, M.
  • Carballo, R.
  • Ramos, V.
  • Iglesias, G.

Abstract

In a tidal stream project the selection of the most appropriate device is of major importance. The aim of this work is to investigate the difference between two tidal farms, one with floating TSTs (Tidal Stream Turbines), the other with bottom-fixed TSTs, in terms of annual performance and its monthly variability. This investigation is carried out considering real operational conditions in a case study: Ria de Ortigueira (NW Spain), a drowned river valleys which is one of the most promising sites for tidal stream energy exploitation in the Iberian Peninsula. A 3D, high-resolution, numerical model is applied to simulate the hydrodynamics of the ria during an entire year with either the floating or bottom-fixed TSTs, and, on these grounds, determine the most representative performance parameters. Significant differences emerge in the performance of both plants; these are due to a great extent to the vertical variation in the flow velocity, which is relevant at many sites of interest for tidal stream energy exploitation such as Ria de Ortigueira. Finally, relevant variations were identified in the intra-annual performance which must be borne in mind in dimensioning the plant.

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  • Sánchez, M. & Carballo, R. & Ramos, V. & Iglesias, G., 2014. "Energy production from tidal currents in an estuary: A comparative study of floating and bottom-fixed turbines," Energy, Elsevier, vol. 77(C), pages 802-811.
    • Handle: RePEc:eee:energy:v:77:y:2014:i:c:p:802-811
    DOI: 10.1016/j.energy.2014.09.053
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    2. Khojasteh, Danial & Lewis, Matthew & Tavakoli, Sasan & Farzadkhoo, Maryam & Felder, Stefan & Iglesias, Gregorio & Glamore, William, 2022. "Sea level rise will change estuarine tidal energy: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 156(C).
    3. Silvio Barbarelli & Benedetto Nastasi, 2021. "Tides and Tidal Currents—Guidelines for Site and Energy Resource Assessment," Energies, MDPI, vol. 14(19), pages 1-20, September.
    4. González-Gorbeña, Eduardo & Qassim, Raad Y. & Rosman, Paulo C.C., 2018. "Multi-dimensional optimisation of Tidal Energy Converters array layouts considering geometric, economic and environmental constraints," Renewable Energy, Elsevier, vol. 116(PA), pages 647-658.
    5. Gu, Ya-jing & Yin, Xiu-xing & Liu, Hong-wei & Li, Wei & Lin, Yong-gang, 2015. "Fuzzy terminal sliding mode control for extracting maximum marine current energy," Energy, Elsevier, vol. 90(P1), pages 258-265.
    6. Barbarelli, S. & Florio, G. & Amelio, M. & Scornaienchi, N.M., 2018. "Preliminary performance assessment of a novel on-shore system recovering energy from tidal currents," Applied Energy, Elsevier, vol. 224(C), pages 717-730.
    7. Fouz, D.M. & Carballo, R. & López, I. & González, X.P. & Iglesias, G., 2023. "A methodology for cost-effective analysis of hydrokinetic energy projects," Energy, Elsevier, vol. 282(C).
    8. Vazquez, A. & Iglesias, G., 2016. "Capital costs in tidal stream energy projects – A spatial approach," Energy, Elsevier, vol. 107(C), pages 215-226.
    9. Cruz, M. & Henriques, R. & Pinho, J.L. & Avilez-Valente, P. & Bio, A. & Iglesias, I., 2023. "Assessment of the potential for hydrokinetic energy production in the Douro river estuary under sea level rise scenarios," Energy, Elsevier, vol. 271(C).
    10. Barbarelli, Silvio & Florio, Gaetano & Lo Zupone, Giacomo & Scornaienchi, Nino Michele, 2018. "First techno-economic evaluation of array configuration of self-balancing tidal kinetic turbines," Renewable Energy, Elsevier, vol. 129(PA), pages 183-200.
    11. Fouz, D.M. & Carballo, R. & López, I. & Iglesias, G., 2022. "A holistic methodology for hydrokinetic energy site selection," Applied Energy, Elsevier, vol. 317(C).
    12. Ward, Sophie L. & Robins, Peter E. & Lewis, Matt J. & Iglesias, Gregorio & Hashemi, M. Reza & Neill, Simon P., 2018. "Tidal stream resource characterisation in progressive versus standing wave systems," Applied Energy, Elsevier, vol. 220(C), pages 274-285.
    13. Yazicioglu, Hasan & Tunc, K.M. Murat & Ozbek, Muammer & Kara, Tolga, 2016. "Simulation of electricity generation by marine current turbines at Istanbul Bosphorus Strait," Energy, Elsevier, vol. 95(C), pages 41-50.
    14. Álvarez, M. & Ramos, V. & Carballo, R. & Arean, N. & Torres, M. & Iglesias, G., 2020. "The influence of dredging for locating a tidal stream energy farm," Renewable Energy, Elsevier, vol. 146(C), pages 242-253.
    15. Khojasteh, Danial & Chen, Shengyang & Felder, Stefan & Glamore, William & Hashemi, M. Reza & Iglesias, Gregorio, 2022. "Sea level rise changes estuarine tidal stream energy," Energy, Elsevier, vol. 239(PE).
    16. Vazquez, A. & Iglesias, G., 2016. "Grid parity in tidal stream energy projects: An assessment of financial, technological and economic LCOE input parameters," Technological Forecasting and Social Change, Elsevier, vol. 104(C), pages 89-101.

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