CPV Solar Power Plants in Spain
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CPV Solar Power Plants in Spain

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This presentation was given at Solar Concentrator Conference in Sept. 2008, Palm Desert, CA. It discussed all aspects of solar plant design, specifications, installation, and energy production for ...

This presentation was given at Solar Concentrator Conference in Sept. 2008, Palm Desert, CA. It discussed all aspects of solar plant design, specifications, installation, and energy production for SolFocus\' 0.5MW CPV plants in Spain.

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CPV Solar Power Plants in Spain CPV Solar Power Plants in Spain Presentation Transcript

  • Energy Production of CPV Power Plants at ISFOC Warren Nishikawa warren_nishikawa@solfocus.com warren nishikawa@solfocus com © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Outline Project and Site Overview j CPV Systems Design CPV Power Ratings & Normalizing Methods Energy Production: Predicted vs. Actual Summary 2 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • 0.5 MW Installation at ISFOC ISFOC Headquarters at Puertollano ISFOC: World-Recognized Concentrating Photovoltaic (CPV) Technology Site • Goal of industrializing CPV technology • 3 MW, 7 CPV technologies SolFocus CPV Plants • Site #1: 0.2 MWac at Puertollano • Site #2: 0.3 MWac t Almoguera Sit #2 0 3 MW at Al • 1st Company to Complete CPV Plants, High Feed-In Tariffs • Grid Connected 3 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Site Design g Site #1: Puertollano Site #2: Almoguera 33 Systems 54 Systems 200 kWac 300 kWac • <4% Shading • <2% Shading • 20 m EW/15 m NS • 20 m EW/17 m NS • 0.9 Hectares • 2.1 Hectares 4 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Site #1: Puertollano Grid-Connected Grid Connected September 2008 5 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Site #1: Puertollano 6 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • SF- SF-1000 Concentrator Power Unit CPV Panel 500x Concentrator Optics 210 W Panel • All glass components • True, on-sun rating • 35% efficiency 3J cell • >23% active area efficiency 1.1 m • 85% optical efficiency • +/- 1 degree acceptance angle 1.3 m 1 7 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • SF- SF-1000S System y 6.7 m 6.9 m 6.15 kWp, 30 Panels 46 m2 Aperture 0.1 Degree Pointing Accuracy g g y 8 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • System Peak Power y Puertollano Array DC Peak Power 7000 Specification*: S ifi ti * 6500 • Array: 6.15 kWp 6000 Measured**: er (Watts  DC) ) • Array: 6.20 kWp 5500 • 2% Std. Dev. 5000 Powe 4500 *IEC CPV Test Conditions: 850 W/m2, 20°C Ambient 4000 **Average 33 Systems 3500 3000 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 2.10 2.11 2.12 2.13 2.14 2.15 2.16 Array # Array # 9 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Rated Power Normalized to Concentrator Standard Test Conditions (CSTC): 850 W/m2 DNI, 20°C Ambient Temp. Power Normalized at DNI Test Conditions Power Normalized at Temperature Test Conditions 7000 7000 6750 6750 6500 6500 C (Normalized) Power DC  (Normalized) 6250 6250 6000 6000 5750 5750 Power DC 5500 5500 5250 5250 5000 5000 50 60 70 80 700 800 900 1000 Backpan Temperature Backpan Temperature DNI (W/m^2) DNI (W/ ^2) Empirical Method Theorectical Method Emprical Method Theorectical Method Empirical: P em p = (1+(Tme as –TC STC ) ) * dP/dT * P m ea s * (B CS TC/B me as ) 0 . 0257 × ( T CSTC − T meas ) ⎡ ⎛ (I SC , meas − I SC , CSTC ) ⎞ ⎤ + [N ( E ⎛ ⎞ ] T ⎢ ln ⎜ ⎟ + E g 2 + E g 3 ) − V oc , meas ⎜ 1 − CSTC ⎟ Δ Vi = N ⎟⎥ Theoretical: ⎜ ⎟ ⎜ g1 ⎢⎝ ⎠⎥ ⎝ ⎠ 297 I SC , meas T meas ⎣ ⎦ Results: Only 1.3% Difference 10 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Temperature Performance p 80 Array Power Coefficient: 75 ure [C] -0.17%/°C 70 Typical Si Panels: n Temperatu 65 -0.48%/°C 60 3x Better Than Si 55 Backpan Technology y = ‐1.260x + 645.2 50 Best Performance at 45 High Temperatures g p 445 450 455 460 465 470 Array Voc (V) Array Voltage Coefficient: -1.26V/°C 11 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • System Specifications 30 Panels Max Output 6.3kW 6 3kW Mismatch -2% Misalignment -1% DC Losses -3% DC Power Spec 6.15kW Inverter -3% 3% Dirt -2% Downtime -1% AC Losses -6% 6% AC Power Spec 5.78kW © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Energy Production Calculations Site #1: Site #2: Puertollano Almoguera DNI (kWh/m2)* 5.1 5.4 kWh/kWp 2059 2180 # Systems 33 54 Rated DC Capacity (kWp) 203 332 Rated AC Capacity (kWac) 191 312 Annual Production (MWh) 416 728 *Solar Resources: Meteonorm, SWERA-NASA © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Annual Energy Production gy 800 700 600 500 MWh 400 300 200 100 0 Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Site #2 Cumul 41 88 151 211 277 362 454 539 607 655 693 728 Site #1 Cumul 23 50 85 123 161 212 266 316 352 379 397 416 Site #1 Monthly Site #1 Monthly 23 28 34 38 38 51 54 50 36 27 18 19 Site #2 Monthly 41 46 64 59 67 84 93 85 68 48 38 35 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Puertollano Performance 250000 125% Puertollano: November 10, 2008 200000 100% 150000 75% Total for 33 poles 100000 50% Norm. to 850 DNI Percent of rating 50000 25% 00000 0% 10:00 10:20 10:40 11:00 11:20 11:40 12:00 12:20 12:40 13:00 13:20 13:40 14:00 14:20 14:40 15:00 15:20 15:40 16:00 16:20 16:40 17:00 8:00 8:20 8:40 9:00 9:20 9:40 15 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Summary y 0.5 MWac Installed at ISFOC Systems Rated at Concentrator Standard Test Conditions (CSTC) – True, On-Sun Performance ( ) Systems Measured Above Specification for DC Peak Power Beginning to Demonstrate Energy Production >95% of Predicted Output 16 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)
  • Other Potential CPV Benefits? Tested Against Tornados Hybrid CPV-Wind CPV Wind *Almoguera Site, August 2008 17 © SolFocus, Inc. 2008 Presented : International Conference on Solar Concentrators for the Generation of  Electricity (ICSC – 5), November 16‐19, 2008, Palm Desert, CA USA (www.icsc5.com)