Modelling and Assessment of Marine Renewable Energy Resources. Andrew Cornett Canadian Hydraulics Centre National Research Council Canada May 2008

Transcription

1 Modelling and Assessment of Marine Renewable Energy Resources Andrew Cornett Canadian Hydraulics Centre National Research Council Canada May 2008

2 Background Pan-Canadian resource inventory in 2005/06 Canada endowed with rich wave energy resources along the Atlantic and Pacific coasts Numerous sites with rich tidal current energy resources identified and assessed Further investigation required to refine, improve and verify initial estimates in many areas Further investigations in 2007/08 Focus on regions/resources with industry activity and interest Near-shore waves on the west coast of Vancouver Island River current resources along the St. Lawrence Tidal current resources in the Bay of Fundy MarKE Marine Kinetic Energy Explorer

3 Wave energy devices What kind of technologies? WET EnGen OPD -Pelamis Kinetic flow devices (i.e. turbines for tidal flows and rivers) Not tidal barrages Not low-head hydro Not conventional hydro Clean Current Verdant Power

4 Atlantic Canada Wave Energy Resource ~24 kw/m ~10 kw/m ~43 kw/m ~26 kw/m ~37 kw/m

5 Annual mean wave power from WW3-NWA hindcast kw/m close to shore?? 0.25 by 0.25 resolution 3 hour time interval 5+ year simulation Extensive validation Unreliable close to shore Data courtesy NOAA-MMAB

6 Potential Tidal Kinetic Energy - Canada

7 Potential Tidal Kinetic Energy Atlantic Canada At least 15 good sites in N.S. with >2,000MW of potential power Tide range

8 Tidal Currents - Bay of Fundy Developed a large 3D hydrodynamic model Irregular finite-element mesh, 1,045,000 triangular elements, 5 levels High-resolution in key areas (~100m elements) Telemac-3D solver Calibrated/verified the model to water levels and current measurements Simulated a typical 14-day spring-neap tide cycle Detailed characterization of the kinetic energy resource at key locations Created MarKE-Fundy - A Marine Kinetic Energy Explorer for the Bay of Fundy

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10 Model calibration and validation Replicate known water level fluctuations throughout the Bay Compare with available velocity measurements

11 Animation of tidal flows at Minas Passage

12 Minas Passage - Flood

13 Minas Passage - Ebb

14 Minas Passage X-section Ebb Tide Flood Tide

15 Grand Passage, Petit Passage - Flood Petit Passage Long Island Grand Passage

16 Petit Passage - Flood Grand Passage - Flood

17 Demo of MarKE-Fundy

18 Launch the MarKE application Turn on GIS layers (satellite image, communities, roads, utilities, ) Select variable to map (bathymetry, velocity, power density, ) Pan and zoom to region of interest

19 Launch the MarKE application Turn on GIS layers (satellite image, communities, roads, utilities, ) Select variable to map (bathymetry, velocity, power density, ) Pan and zoom to region of interest GIS layers Variables to map

20 Select location to explore Select elevation of interest Analyse Location of interest Analyse Elevation

21 View velocity profile

22 View tidal ellipse and velocity rose

23 View time series and histograms of velocity and available power density View statistics Statistics Time series

24 View time series and histograms of velocity and available power density View statistics Statistics Histograms

25 Define turbine properties Size Operating mode (constant speed or variable speed) Cut-off speeds Efficiency curve Analyse Size Operating Mode Cut-off speeds Efficiency Curve

26 View time series and histogram of generated power View statistics View overall efficiency Statistics Available Energy & Generated Energy Generated power time series

27 Save and export data Explore a new location Statistics Available Energy & Generated Energy Generated power histogram

28 With funding from: Natural Resources Canada Province of Nova Scotia Province of New Brunswick Thank you! Andrew Cornett nrc.ca