High Spatial Resolution Solar Atlas In        Provence-Alpes-Côte d„Azur                (ISES Solar World Congress 2011) A...
Introduction      2                   Cartography of Solar Resource at different scalesWorldwide yearly sum of global hor...
Introduction3    Project main characteristics:         Based on HelioClim-3 satellite-based surface solar irradiation da...
Introduction4       The potential end-users and usages of a solar atlas:            Governmental and private actors     ...
Increase the spatial resolution of                                                         HelioClim-35       Intra-pixel...
Shadows effects on solar                                                      irradiation6       Example : Annot    Solar...
The meteorological stations for                                             the HelioClim calibration7       29 Météo Fra...
« Raw* » HelioClim-3:                                           monthly GHI estimation errors 8                           ...
Corrected* HelioClim-3:                                           monthly GHI estimation errors 9                         ...
Example of high resolution                                                      irradiation map10                         ...
Example of high resolution                                                      irradiation map11                         ...
Applications from the solar atlas12    Ranking maps to determine “best” potential solar sites           SOLAR         ATL...
Exclusion maps13          • Lakes          • Floodplain          • Agriculture, forests, cities,…          • Natural prese...
Exclusion maps14    35% of the initial surface     remains after application of     the exclusion zones           Natura...
Ranking maps – Criteria 115    Distance from grid source points                      Value (km)       Mark               ...
Ranking maps – Criteria 216    Mean yearly irradiation for south oriented panel with 35° slope                          V...
Ranking maps – Criteria 317    Nature parks                       Value     Rank                    Natural park 10      ...
Ranking maps – Final18    Final global ranking map including:           Distance to source points           Irradiation...
Potential best sites ranking map19    Final map to assess the “best” sites potential: Solar Atlas for the Mediterranean  ...
Finalising the solar radiation data                                   assessment for a specific site20    Installation of...
Conclusion - 121    High resolution Solar Atlas         Resolution: 200 m         HelioClim-3 database (res. 4 km, peri...
Conclusion - 222    Creation of a potential “best” sites map         Exclusion zones based mainly on land cover and Digi...
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PACA assessing solar_radiation_data

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Solar Atlas for the Mediterranean - Stakeholder Workshop Cairo
1 November 2011

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Transcript of "PACA assessing solar_radiation_data"

  1. 1. High Spatial Resolution Solar Atlas In Provence-Alpes-Côte d„Azur (ISES Solar World Congress 2011) Assessing Solar Radiation Data For Large Scale Solar Energy Projects Etienne Wey – TRANSVALOR S.A.
  2. 2. Introduction 2  Cartography of Solar Resource at different scalesWorldwide yearly sum of global horizontal irradiation map(kWh/m2) from NWP re-analysises (res. ~ 50 km) 3500 kWh/m²8060 3000 kWh/m²4020 2500 kWh/m² High resolution yearly sum of GHI map (kWh/m2) 0 2000 kWh/m² for the region Provence-Alpes-Côte d’Azur (res.-20 200 m) 1500 kWh/m²-40 Yearly sum of GHI map (kWh/m2) for Europe from HelioClim databases-60 1000 kWh/m² (res. ~5 km, method Heliosat-2 applied to Meteosat images)-80 500 kWh/m² 55 -150 -100 -50 0 50 100 150 2400 2200 50 2000 1800 45 1600 1400 40 1200 1000 35 -20 -10 0 10 20 30 40 Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  3. 3. Introduction3 Project main characteristics:  Based on HelioClim-3 satellite-based surface solar irradiation database (based on Meteosat Second Generation: res. ~ 4 km, near real-time from 2004)  200 m resolution solar maps  Monthly and yearly sum of Irradiations  Long-term mean and (standard deviation)  Time series of monthly and yearly irradiations  PV and Solar Thermodynamic Applications  Global irradiations on typical tilted plans (e.g. for PV, thermal systems)  Direct Irradiation on typical tilted plans and in normal incidence (e.g. for CSP and CPV) Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  4. 4. Introduction4  The potential end-users and usages of a solar atlas:  Governmental and private actors  Geographical analysis of local solar potential  Sitting and sizing solar power plants Advanced feasibility pre-studies based on geographical analysis (before, for example, the local installation of a pyranometer station)  Individual  High resolution map suitable for sizing small individual solar systems (small PV system, solar water heating systems, etc)  Accurate and well-presented solar maps are concrete and instructive for everybody (e.g. education) to promote solar energy Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  5. 5. Increase the spatial resolution of HelioClim-35  Intra-pixel (HC-3) effects of the relief  Use of the relief database SRTM (Shuttle Radar Topography Mission)  Spatial resolution of 100 m  Localization Accuracy better than 10 m  Effect of the optical depth variations of the atmosphere (Abdel Wahab et al., 2008)  Shadow effects respectively for the diffuse and direct components of the global irradiation (Ruiz-Arias et al., 2010)  Local calibration of irradiation estimation with on-ground pyranometric measurements  Calibration of the global horizontal irradiation (GHI)  Calibration of the parametric experimental model of global/diffuse decomposition  Modeling of uncertainty from the calibration residue analysis Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  6. 6. Shadows effects on solar irradiation6  Example : Annot Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  7. 7. The meteorological stations for the HelioClim calibration7  29 Météo France ground stations  Mostly hourly and daily GHI data  The three meteorological stations for the project (RSP)  One year renting (CSP Service) (spin-off of the German Aerospace, DLR)  global and diffuse irradiations on horizontal plan (sampling : 10 min) (+ temperature and humidity)  RSP : accurate system and robust with respect to  dust  misalignments Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  8. 8. « Raw* » HelioClim-3: monthly GHI estimation errors 8 NDATA MREF MBE MAE RMSE CC Monthly sums of GHI 1269 months 132.2 kWh/m2 5.3 % 7.5 % 10.1 % 0.992 (Reference: MF stations)* “Raw” HC3:• No correction oforography effects• No local calibration RMSE MBE <0 MBE >0 Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  9. 9. Corrected* HelioClim-3: monthly GHI estimation errors 9 NDATA MREF MBE MAE RMSE CC Monthly sums of GHI 1269 months 132 kWh/m2 -0.2 % 3.1 % 4.3 % 0.996 (Ref: 20 MF stations) Monthly sums of GHI LOOCV 1267 months 132 kWh/m2 -0.7 % 4.4 % 6.2 % 0.991 (Ref: 20 MF stations) Monthly sums of GHI 38 months 126 kWh/m2 0.4 % 2.5 % 3.1 % 0.998 (3 RSP stations) RMSE dependency with orography Mountainous area: 5.8 % => 7.4 kWh/m2 (et MBE = -0.6%) Non-mountainous area: 3.2 % => 4.3 kWh/m2 (et MBE < -0.1%)* Corrected HC3:• Orography effects• Local calibration RMSE MBE <0 MBE >0 Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  10. 10. Example of high resolution irradiation map10 Map of yearly sums of GHI (mean between 2004 –2010) Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  11. 11. Example of high resolution irradiation map11 Map of yearly sums of DNI (mean between 2004 –2010) Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  12. 12. Applications from the solar atlas12  Ranking maps to determine “best” potential solar sites SOLAR ATLAS PACA « Geophysial » conditions analysis Exclusion maps Best creation potential Electrical grid analysis (source points « Ranking maps » sites localisation) creation identification Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  13. 13. Exclusion maps13 • Lakes • Floodplain • Agriculture, forests, cities,… • Natural preservation zones • Slope over 15% (or 20% if south oriented) Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  14. 14. Exclusion maps14  35% of the initial surface remains after application of the exclusion zones  Natural preservation zones  Forests  Floodplains  High slope values Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  15. 15. Ranking maps – Criteria 115  Distance from grid source points Value (km) Mark <à 1,0 20 <à 2.6 19 <à 4.2 18 <à 5.8 17 <à 7.4 16 <à 9,0 15 <à 10.6 14 <à 12.2 13 <à 13.8 12 <à 15.4 11 <à 17,0 10 <à 18.6 5 <à 20.2 4 <à 21.8 3 <à 23.4 2 <à 25,0 1 <à 26.6 0 Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  16. 16. Ranking maps – Criteria 216  Mean yearly irradiation for south oriented panel with 35° slope Value Rank >à 2200 20 >à 2125 19 >à 2050 18 >à 1975 17 >à 1900 16 >à 1825 15 >à 1750 14 >à 1675 13 >à 1600 12 >à 1525 11 >à 1450 10 >à 1375 9 >à 1300 8 >à 1225 7 >à 1150 6 >à 1075 5 >à 1000 4 >à 925 3 >à 850 2 >à 775 1 >à 700 0 Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  17. 17. Ranking maps – Criteria 317  Nature parks Value Rank Natural park 10 Other 20 Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  18. 18. Ranking maps – Final18  Final global ranking map including:  Distance to source points  Irradiation  Nature parks Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  19. 19. Potential best sites ranking map19  Final map to assess the “best” sites potential: Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  20. 20. Finalising the solar radiation data assessment for a specific site20  Installation of an irradiation measurement ground station on site for 6 to 12 month (need to “catch” the maximum variation during the year)  Calibration of the satellite irradiation data from the measure  Creation of Typical Meterological Year time series (P50, P90) to estimate the solar energy project yield  Verify the site irradiation variability if larger than satellite pixel size Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  21. 21. Conclusion - 121  High resolution Solar Atlas  Resolution: 200 m  HelioClim-3 database (res. 4 km, period: 2004 - 2010)  Shadow effects estimated from the DEM SRTM  Local calibration with ground pyranometric stations  Monthly sum of global and direct irradiation on different tilted plan  Uncertainties estimated from statistical analysis of the calibration residue w.r.t. pyranometric ground stations  Monthly sum of global irradiation: bias < 1 %, RMSE ~ 5 % (~7 kWh/m2)  Monthly sum of direct normal irradiation: bias < 1 %, RMSE ~8 % (~12.5 kWh/m2) Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011
  22. 22. Conclusion - 222  Creation of a potential “best” sites map  Exclusion zones based mainly on land cover and Digital Elevation Model  Ranking maps based on :  Distance from electricity grid source points  Yearly mean irradiation value (specific to the technology of interest – PV, CPS, CSP)  Societal acceptability of the zone (Natural park,…)  Fine local assessment for the site  Installation of an irradiation measurement ground station  Calibration of the satellite data with the ground station  Creation of TMY time series (P50, P90) to calculate the solar energy project yield  Estimation of the local variation of irradiation is site is large Solar Atlas for the Mediterranean Stakeholder Workshop Nov. 1st, 2011

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