Introduction to mesoscale and microscale wind … Badger...Introduction to mesoscale and microscale...
Transcript of Introduction to mesoscale and microscale wind … Badger...Introduction to mesoscale and microscale...
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Introduction to mesoscale and microscale wind resource mapping Jake Badger Niels Mortensen, Andrea Hahmann, Ferhat Bingöl DTU Wind Energy, Technical University of Denmark
Mesoscale Mapping of RE Resources ESMAP Knowledge Exchange Forum World Bank, 9th May 2012
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DTU Wind Energy, Technical University of Denmark
Wind resource mapping types, coverage, resolution
Macro Global coverage ~50-200 km
Meso ~5 km National coverage Micro ~10 – 100m Local/site coverage
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Sources: NASA data Indian Wind Atlas CWET/Risø DTU
r e s o l u t i o n i n c r e a s i n g
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DTU Wind Energy, Technical University of Denmark
Macro scale wind resource modelling
GLOBAL WIND ATLAS ADDRESSES SHORT COMINGS
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SRREN report: range tech. pot. 19 – 125 PWh / year (onshore and nearshore)
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DTU Wind Energy, Technical University of Denmark
Mesoscale modelling
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Sources: Egyptian Wind Atlas Wind Atlas for Dongbei Mali Wind Atlas Cape Verde Wind Atlas
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DTU Wind Energy, Technical University of Denmark5
Mesoscale modelling... ...only “half the story”
http://www.wasaproject.info/
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DTU Wind Energy, Technical University of Denmark6
Boxed wind roses derived from observation, unboxed derived from KAMM/WAsP.
Mesoscale modelling and measurement verification... ...makes a wind resource assessment
http://www.wasaproject.info/
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DTU Wind Energy, Technical University of Denmark
Mesoscale modelling with uncertainty estimate of wind speeds
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5.6 % 4.3 %
9.6 % 6.7%
Sources: Egyptian Wind Atlas Wind Atlas for Dongbei Mali Wind Atlas Cape Verde Wind Atlas
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DTU Wind Energy, Technical University of Denmark
Microscale modelling
8 www.wasp.dk
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DTU Wind Energy, Technical University of Denmark
Microscale modelling
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Input from mesoscale modelling output
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DTU Wind Energy, Technical University of Denmark 10
Microscale modelling Resource is discovered
www.wasp.dk
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DTU Wind Energy, Technical University of Denmark 11
Microscale modelling Resource is discovered
BUT CAREFUL: High resolution does not mean accurate Verification component essential For bankability, a wind farm project needs a measurement campaign and needs due diligence studies
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DTU Wind Energy, Technical University of Denmark
Microscale modelling
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Input from analysis of developer’s measurements
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DTU Wind Energy, Technical University of Denmark
High resolution discovers resources Wind resource (power density) calculated at different resolutions
5 km
0.1 km
50 km
50 k
m
328 W/m2
398 W/m2
505 W/m2
641 W/m2
mean power density of total area mean power density for windiest 50% of area
The new Global Wind Atlas A Clean Energy Ministerial initiative within Global Solar and Wind Atlas
Grant: Danish Energy Agency EUDP 11-II, Globalt Vind Atlas, 64011-0347
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DTU Wind Energy, Technical University of Denmark
Large scale deployment of microscale modelling
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DTU Wind Energy, Technical University of Denmark
scale of aggregation globe county site country continent
unce
rtai
nty global
wind atlas
ESMAP proposal E%
Aggregation Schematic graph showing uncertainty as function of scale of aggregation
for various wind resource mapping methodologies
Site assessment with on-site measurements
coarse climate data
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DTU Wind Energy, Technical University of Denmark 16
Measurements for verification In-situ and possibilities for remote sensing offshore Synthetic Aperture Radar, ocean
surface wind retrieval methods
http://www.wasaproject.info/
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DTU Wind Energy, Technical University of Denmark
High quality measurement
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http://www.measnet.com/
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DTU Wind Energy, Technical University of Denmark
An example of an areas of development
Uncertainty mapping
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Badger et al, Methods to assess uncertainty of wind resource estimates determined by mesoscale modelling. EWEA Annual Event 2011,Brussels (BE), 14-17 Mar,2011
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DTU Wind Energy, Technical University of Denmark
Summary 1. Downscaling: linkage of models going from large to small scales 2. Modelling can give very high resolution maps... ...but verification required to give these value 3. The global wind atlas will give much improved estimate of resource
(global/region/country)... ...but not precisely where or accurate how much at specific sites 4. Mesoscale modelling and measurements, as in ESMAP proposal, provide
– robust verified assessment for precise national planning – foundation for private developer activities
5. National assessment can fit into Global Solar and Wind Atlas
dissemination infrastructure.
THANK YOU FOR LISTENING [email protected]
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