Downloaded from orbit.dtu.dk on: Dec 19, 2017 Vindatlas i Ægypten Mortensen, Niels Gylling; Badger, Jake; Hansen, Jens Carsten Publication date: 2006 Document Version Peer reviewed version Link back to DTU Orbit Citation (APA): Mortensen, N. G., Badger, J., & Hansen, J. C. (2006). Vindatlas i Ægypten. Abstract from Vinddag 2006, Dansk Forskningskonsortium for Vindenergi, Risø (DK), 21 Nov,. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.
Wind Atlas for Egypt A national database for wind resource assessment and wind farm planning Niels G. Mortensen og Jake Badger Vindenergiafdelingen / Meteorologi Dansk Forskningskonsortium for Vindenergi Vinddag 2006
Bird Migration Atlas Wind Atlas for Egypt Maps etc. Legislation Master plans Wind Farm Planning EIA Guidelines Approvals
Sample meteorological mast in Zafarana 25-m lattice tower, concrete foundation Top-pole mounting to avoid flow distortion
Observational wind atlas Analysis procedure (WAsP) Observed Wind Climate + sheltering obstacles + roughness map (GE, SWBD) + elevation map (SRTM 3) Regional Wind Climate Application procedure (WAsP) Regional Wind Climate + sheltering obstacles + roughness map + elevation map Predicted Wind Climate + power and thrust curves + wind farm layout Predicted wind farm AEP
Resource mapping by mesoscale modelling Mesoscale model KAMM Output: annual averages of wind speed and power Regular horizontal grid Area: 10,000-100,000 s of km 2 Resolution: 3-5 km Wind measurements are not required, but Super-computer and skilled staff are needed! Uncertainty inherently larger than observational wind atlas
Regional winds from NCEP/NCAR reanalysis
New elevation map of Egypt Elevation in m a.s.l. SRTM (Shuttle Radar Topography Mission) Resolution 30" and 3"
New wind resource map of Egypt Mean wind speed 50 m a.g.l. [ms -1 ] KAMM modelling Resolution 7.5 km NCEP/NCAR data SRTM30 elevation GLCC land cover Terrain features may give higher wind speeds locally! Output formats: map graphics statistics
and Egyptian offshore wind resources Mean wind speed 50 m a.s.l. [ms -1 ] KAMM modelling Resolution 7.5 km NCEP/NCAR data
Numerical wind atlas NWA analysis procedure (WAsP-like) KAMM Predicted Wind Climate (> 50,000 virtual met. stations!) + roughness map (GLCC) + elevation map (SRTM30) Regional Wind Climate Application procedure (WAsP) Regional Wind Climate + sheltering obstacles + roughness map (GE) + elevation map (SRTM3) Predicted Wind Climate + power and thrust curves + wind farm layout Predicted wind farm AEP
WAsP wind speed [m/s] 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NWA wind speed [m/s] Mean absolute error ~ 5% Abu Simbel Asswan Dakla South Kharga Shark El-Ouinat 1:1
WAsP wind speed [m/s] 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NWA wind speed [m/s] Mean absolute error ~ 5% Alexandria El-Galala El-Mathany Ras El-Hekma Sidi Barrani 1:1
WAsP wind speed [m/s] 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Mean absolute error ~ 5-10% 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NWA wind speed [m/s] Abu Darag Abu Darag NW Gulf of-el-zayt Hurghada WETC St. Paul Zafarana M7 Zafarana El-Zayt NW 1:1 Ras Sedr Katamaya Ras Ghareb
Effect of modelling resolution (mesoscale) Mean wind speed @ 50 m a.g.l. Resolution 7.5 km AEP = 37 GWh/y 5 km 6 km
Effect of modelling resolution (mesoscale) Mean wind speed @ 50 m a.g.l. Resolution 5 km AEP = 42 GWh/y 5 km 6 km
Effect of modelling resolution (mesoscale) Mean wind speed @ 50 m a.g.l. Resolution 1 km AEP = 42 GWh/y 5 km 6 km
Effect of modelling resolution (microscale) Mean wind speed @ 50 m a.g.l. WAsP model Resolution 25 m AEP = 55 GWh/y 5 km 6 km
Wind resource map from OWA Red Belt Northing [m] 718000 719000 720000 721000 Row 4 3200 3100 3000 2900 2800 2700 Row 3 Row 2 Mean wind speed @ 50 m a.g.l. WAsP model Resolution 25 m Bankable estimate of wind farm AEP Row 1 2600 769000 770000 771000 772000 773000 774000 Red Belt Easting [m]
A complete package for Egypt Wind-climatological inputs numerical wind atlas (nation-wide) observational wind atlas (selected regions) Topographical inputs (nation-wide) SRTM 3" elevation data SRTM Water Body Data (coasts, lakes, rivers) Google Earth satellite imagery (land-use) topographical and thematic maps Software tools terrain mapping tools (Surfer) microscale modelling tools (WAsP) Technology transfer and capacity building
Conclusions and the future Main conclusions reliable picture of Egyptian wind resources obtained wind resource assessment, siting and wind farm planning can now be done within hours anywhere in Egypt mean absolute error on U typically around 5% present approach may be continued for many years NWA methodology can be applied elsewhere Numerical wind atlas (KAMM/WAsP methodology) long-term data (1968-95) infrequent updating ok Observational wind atlas some reference met. stations should continue new measurement programmes may be designed Wind Atlas for Egypt can be updated, extended and detailed
Probably the best wind farm site in the world Hub height 50 m: U > 11 ms -1 P > 1100 Wm -2 CF ~ 70% FLH ~ 6000 h 100 s of km 2 Gulf of El-Zayt area (Gulf of Suez)