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  1. Hybrid systems performance: a case study. Luis Mª Arribas CIEMAT Spain lm.arribas@ciemat.es European Wind Energy Conference May 2007 Milan European Wind Energy Conference

  2. Layout of the presentation • Introduction • The proposed hybrid system performance assessment procedure. • Case study: description of the system • Particularities of wind generation: analysis of components. • Analysis of the system. • Conclusion European Wind Energy Conference European Wind Energy Conference May 2007 Milan

  3. 1. Introduction • Hybrid Systems Performance • Work done for Photovoltaics • ISPRA’s Guidelines for the Assessment of Photovoltaic Plants, Documents A, B and C • PERFORMANCE Project • Performance, reliability and analysis of PV systems, prepared by the IEA Task II working group • IEC 61724 Standard: “Photovoltaic System Performance Monitoring - Guidelines for Measurement, Data Exchange and Analysis” • IEA PVPS Task XI working group “PV-Hybrids and Mini-Grids” European Wind Energy Conference

  4. 2. Proposed Procedure • Use IEC 61724 Standard as a starting point • Parameters for PV generation • Include wind turbines in the scope of the Standard • Parameters for Wind generation in a hybrid Wind-PV scheme. European Wind Energy Conference

  5. GI VA IA VL IL Power Condtioning Back-Up Utility PV Array Load Tam PA PL Tm VS VU SW VBU IFU IBU PFU PBU TU PTU ITS PTS IFS PFS Storage - - + + Starting point: PV’s performance parameters European Wind Energy Conference

  6. Starting point: PV’s performance parameters European Wind Energy Conference

  7. Starting point: PV’s performance parameters Balance of the System performance Average production ratios Normalized losses System performance indices European Wind Energy Conference

  8. DW VWT,AC IWT,AC PWT,AC FWT Power Condtioning Back-Up Wind Turbine Utility PV Array Load PA Hum VBU IFU IBU PFU GI VA IA VL IL Tam PA PL Tm VS VU SW Storage PBU TU PTU - - ITS PTS IFS PFS + + New Parameters added to the PV ones European Wind Energy Conference

  9. New Parameters added to the PV ones EGAW has been defined in the following way: : measured air density Ws: average Wind Speed for the period of time used in the summation European Wind Energy Conference

  10. EGAW/PW,ref Global Available Wind Energy Reference Wind Power New Parameters added to the PV onesAverage production ratios European Wind Energy Conference

  11. Reference Wind Power • There is no common Wind Power Reference for all wind turbines and, so, • Wind Power Reference depends upon the specific wind turbine European Wind Energy Conference

  12. New Parameters added to the PV onesNormalized losses European Wind Energy Conference

  13. AWT = Wind Turbine rotor area (m2) New Parameters added to the PV onesSystem performance indices European Wind Energy Conference

  14. Description of the CICLOPS I system. 7.5 kW SWT 5 kWp PV array 20 kVA Genset 595 C10 Battery Storage 120 V DC bus voltage European Wind Energy Conference

  15. Description of the CICLOPS I system. European Wind Energy Conference

  16. Quasi-dynamic regulation of Wind charge converter, trying to maintain the high battery voltage set-point 4. Particularities of wind generation: analysis of components • Sampling rate European Wind Energy Conference

  17. 4. Particularities of wind generation: analysis of components • Pre-averaging interval European Wind Energy Conference

  18. 5. Analysis of the system • Meteorological European Wind Energy Conference

  19. 5. Analysis of the system • Electrical Energy Quantities • PV • Wind European Wind Energy Conference

  20. 5. Analysis of the system • Electrical Energy Quantities • Back-up generator • Load • Whole system European Wind Energy Conference

  21. 5. Analysis of the system • Balance Of the System (BOS) component performance European Wind Energy Conference

  22. 5. Analysis of the system: system performance indices • Average Production Ratios • PV • Wind European Wind Energy Conference

  23. 5. Analysis of the system: system performance indices • Normalized losses • PV • Wind European Wind Energy Conference

  24. 5. Analysis of the system: system performance indices • System Throughput indices • PV • Wind European Wind Energy Conference

  25. Conclusion • A Hybrid System Performance Assessment procedure has been introduced • Some particularities of wind generation arise • At least for demonstration projects, monitoring for: • long-term assessment, • characterization of components, • analysis of the system, • gain more understanding on hybrid systems. • This is a step ahead in the assessment of PV-Wind Hybrid systems, but there is still much more work to be done European Wind Energy Conference

  26. THE END Thank you for your attention European Wind Energy Conference May 2007 Milan European Wind Energy Conference