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The role of tidal asymmetry in characterizing the tidal energy resource of Orkney

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  • Neill, Simon P.
  • Hashemi, M. Reza
  • Lewis, Matt J.

Abstract

When selecting sites for marine renewable energy projects, there are a wide range of economical and practical constraints to be considered, from the magnitude of the resource through to proximity of grid connections. One factor that is not routinely considered in tidal energy site selection, yet which has an important role in quantifying the resource, is tidal asymmetry, i.e. variations between the flood and ebb phases of the tidal cycle. Here, we present theory and develop a high-resolution three-dimensional ROMS tidal model of Orkney to examine net power output for a range of sites along an energetic channel with varying degrees of tidal asymmetry. Since power output is related to velocity cubed, even small asymmetries in velocity lead to substantial asymmetries in power output. We also use the 3D model to assess how tidal asymmetry changes with height above the bed, i.e. representing different device hub heights, how asymmetry affects turbulence properties, and how asymmetry is influenced by wind-driven currents. Finally, although there is minimal potential for tidal phasing over our study site, we demonstrate that regions of opposing flood- versus ebb-dominant asymmetry occurring over short spatial scales can be aggregated to provide balanced power generation over the tidal cycle.

Suggested Citation

  • Neill, Simon P. & Hashemi, M. Reza & Lewis, Matt J., 2014. "The role of tidal asymmetry in characterizing the tidal energy resource of Orkney," Renewable Energy, Elsevier, vol. 68(C), pages 337-350.
    • Handle: RePEc:eee:renene:v:68:y:2014:i:c:p:337-350
    DOI: 10.1016/j.renene.2014.01.052
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    References listed on IDEAS

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    1. Ramos, V. & Carballo, R. & Álvarez, M. & Sánchez, M. & Iglesias, G., 2013. "Assessment of the impacts of tidal stream energy through high-resolution numerical modeling," Energy, Elsevier, vol. 61(C), pages 541-554.
    2. Adcock, Thomas A.A. & Draper, Scott, 2014. "Power extraction from tidal channels – Multiple tidal constituents, compound tides and overtides," Renewable Energy, Elsevier, vol. 63(C), pages 797-806.
    3. Neill, Simon P. & Jordan, James R. & Couch, Scott J., 2012. "Impact of tidal energy converter (TEC) arrays on the dynamics of headland sand banks," Renewable Energy, Elsevier, vol. 37(1), pages 387-397.
    4. Iyer, A.S. & Couch, S.J. & Harrison, G.P. & Wallace, A.R., 2013. "Variability and phasing of tidal current energy around the United Kingdom," Renewable Energy, Elsevier, vol. 51(C), pages 343-357.
    5. Carballo, R. & Iglesias, G. & Castro, A., 2009. "Numerical model evaluation of tidal stream energy resources in the Ría de Muros (NW Spain)," Renewable Energy, Elsevier, vol. 34(6), pages 1517-1524.
    6. Neill, Simon P. & Litt, Emmer J. & Couch, Scott J. & Davies, Alan G., 2009. "The impact of tidal stream turbines on large-scale sediment dynamics," Renewable Energy, Elsevier, vol. 34(12), pages 2803-2812.
    7. Sánchez, M. & Carballo, R. & Ramos, V. & Iglesias, G., 2014. "Tidal stream energy impact on the transient and residual flow in an estuary: A 3D analysis," Applied Energy, Elsevier, vol. 116(C), pages 167-177.
    8. Bryden, Ian G. & Couch, Scott J., 2006. "ME1—marine energy extraction: tidal resource analysis," Renewable Energy, Elsevier, vol. 31(2), pages 133-139.
    9. Iglesias, G. & Sánchez, M. & Carballo, R. & Fernández, H., 2012. "The TSE index – A new tool for selecting tidal stream sites in depth-limited regions," Renewable Energy, Elsevier, vol. 48(C), pages 350-357.
    10. Clarke, J.A. & Connor, G. & Grant, A.D. & Johnstone, C.M., 2006. "Regulating the output characteristics of tidal current power stations to facilitate better base load matching over the lunar cycle," Renewable Energy, Elsevier, vol. 31(2), pages 173-180.
    11. Blunden, L.S. & Bahaj, A.S., 2006. "Initial evaluation of tidal stream energy resources at Portland Bill, UK," Renewable Energy, Elsevier, vol. 31(2), pages 121-132.
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