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Efficient installation of offshore wind farms…also in the future

Efficient installation of offshore wind farms…also in the future. Case study: Burbo Banks Offshore Wind Farm. Rasmus Lund, Siemens Wind Power A/S. Agenda. Siemens’ offshore track record Siemens’ offshore wind turbines Efficient installation of offshore wind farms

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Efficient installation of offshore wind farms…also in the future

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  1. Efficient installation of offshore wind farms…also in the future Case study: Burbo Banks Offshore Wind Farm. Rasmus Lund, Siemens Wind Power A/S

  2. Agenda • Siemens’ offshore track record • Siemens’ offshore wind turbines • Efficient installation of offshore wind farms • Case study: Burbo Banks Offshore Wind Farm

  3. Worldwide market leader in offshore projects Vindeby, DK  11 turbines (1991) Baltic I, DE  21 turbines1) Middelgrunden, DK  20 turbines (2000) Burbo Banks, UK  25 turbines (2007) Samsø, DK  10 turbines (2002) Lynn / Inner Dowsing, UK  54 turbines (2008) Rønland, DK  4 turbines (2002) Gunfleet Sands, UK  48 turbines1) Rødsand/Nysted, DK  72 turbines (2003) Rhyl Flats, UK  25 turbines1) Frederikshavn, DK  1 turbine (2003) Greater Gabbard, UK  140 turbines1) HornsRev II, DK  91 turbines1) Sheringham Shoal, UK  88 turbines1) Rødsand II, DK  90 turbines 1) London Array, UK  175 turbines1) Hywind, NO  1 turbine (2009) Walney, UK  102 turbines1) Lillgrund, SE  48 turbines (2007) 1) In progress

  4. Two new family members for Siemens offshore • 2.3 MW - 82 m rotor introduced 2002, certified for IEC IA • 2.3 MW - 93 m rotor introduced 2005, certified for IEC IIA • 2.3 MW - 101 m rotor introduced 2009, certified for IEC IIB • 3.6 MW - 107 m rotor introduced 2004, certified for IEC IA • 3.6 MW - 120 m rotor planned for installation late 2009, to be certified for IEC IA/B Siemens’ offshore line-up

  5. Efficient installation is becoming more critical • Larger projects • Projects located further offshore • Year-round installation Trends Increased focus on efficient installation of offshore wind farms

  6. There are many pieces to the puzzle when it comes to efficient installation • Improved wind turbine design for easy interface and safe installation • Well planned onshore pre-assembly and tests at base harbor • Efficient wind turbine component arrangement and planning of installation vessels • Ensuring co-operation with owner and all suppliers in design, planning and execution • Focus on efficient quality control at base harbor • Choice of an efficient buffer system at base harbor Key elements of efficient installation

  7. An example: Burbo Banks

  8. Key project facts • 25 x 3,6 MW • Round 1 UK project: 90 MW output • Tip height 137m above mean sea-level. • Water depth: 7-12 m • Tide: +/- 5m • Distance to shore: 7-12 km • Mean wind speed: 9 m/s • The wind farm is generating enough electricity to power the equivalent of over 80,000 homes 137 m 107 m 83,5 m

  9. Scope of work • 25 pcs SWT-3.6-107 offshore wind turbines • Transportation, installation, commissioning and tests • 34kV switchgear • SCADA system • 5 years service and maintenance

  10. Logistics UK Blades Towers Nacelles Hubs Power units

  11. One vessel for 6.25 turbines

  12. Location

  13. Port layout • Port of Mostyn, UK • Purpose- Logistics centre - Buffer • Arrangement - 45,000 m² • Main tasks at harbor- Pre-assembly- Test - Quality control- Vessel loading

  14. Port layout • Port of Mostyn, UK • Purpose- Logistics centre - Buffer • Arrangement - 45,000 m² • Main tasks at harbor- Pre-assembly- Test - Quality control- Vessel loading

  15. Nacelle loading

  16. Blade loading

  17. Installation jack-up

  18. Tower installation

  19. Nacelle installation

  20. Blade installation

  21. End result • All 25 SWT-3.6-107 wind turbines were successfully installed in 43.5 days, well ahead of schedule

  22. Another example: Lillgrund110 MW – 48 x SWT-2.3-93

  23. Example 3: Lynn & Inner Dowsing194 MW – 54 x SWT-3.6-107

  24. Example 4: HywindThe world’s first floating WTG – 2.3 MW – 1 x SWT-2.3-82

  25. Successes and lessons learned • Pre-assembly and tests at base harbor • Arrangement of installation vessels • Installation within time schedule • Very good co-operation with clients and subcontractors • Detailed planning of all phases early in the project • Importance of pre-assembly setup and efficient quality control at base harbor • Importance of an efficient buffer system • Sufficient time lag between difference project phases Successes Lessons learned

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