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Spatio-temporal variation in wave power and implications for electricity supply / I. Fairley; H.C.M. Smith; B. Robertson; M. Abusara; I. Masters
Swansea University Author: Masters, Ian
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Wave energy resources are intermittent and variable over both spatial and temporal scales. This is of concern when considering the supply of power to the electricity grid. This paper investigates whether deploying arrays of devices across multiple spatially separated sites can reduce intermittency o...
|Published in:||Renewable Energy|
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Wave energy resources are intermittent and variable over both spatial and temporal scales. This is of concern when considering the supply of power to the electricity grid. This paper investigates whether deploying arrays of devices across multiple spatially separated sites can reduce intermittency of supply and step changes in generated power, thereby smoothing the contribution of wave energy to power supply. The primary focus is on the southwest UK; SWAN wave model hindcast data are analysed to assess the correlation of the resource across multiple sites and the variability of power levels with wave directionality. Power matrices are used to calculate step changes in the generated power with increasing numbers of sites. This is extended to national and European scales using ECMWF hindcast data to analyse the impacts of generating power at multiple sites over wider areas. Results show that at all scales the step change in generated power and the percentage of time with zero generation decreases with increasing numbers of sites before plateauing. This has positive implications for performance of electricity grids with high levels of renewable penetration.
2018 Collaboration under EPSRC Supergen marine core funding on a priority topic for large scale deployment of renewables. Focus is on SW region of UK, where arrays are likely to be deployed. Important for future growth of WaveHub and Pembrokeshire Wave Demo Zone (email@example.com). Results show regional scale deployment planning reduces intermittency of supply and facilitates grid integration. Extension to national and EU scales demonstrate similar results. International co-author improves global impact, the novel methodology can be applied in any region.
Wave power; Wave resource; Grid integration; SWAN wave model; Wave intermittency; Buoy data
College of Engineering