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Hywind Floating Wind Power Production
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  • 1. Hywind - Floating wind power production Alexandra Bech Gjørv Senior Vice President, Norsk Hydro ASA Oil & Energy 2006-05-24
  • 2. Hydro is developing innovative energy solutions based on renewable resources Dato: 2006-05-24 • Side: 3 • Oil & Energy
  • 3. 5 Technical data WTG: 2,3 MW Turbine weight: 138 tonnes Turbine height 65 m Rotor diameter: 82,4 m Draft hull: 100 m 5300 m3 Displacement: Diameter at water line: 6m Diam. submerged body: 8,3 m Water depths: 120-700 metres Mooring: 3 lines
  • 4. Many advantages compared to near shore wind Higher winds further out Relatively robust and cost efficient design Minimal offshore work Independent of location, less conflicts Flexible on grid connection Dato: 2006-05-24 • Side: 7 • Oil & Energy
  • 5. 6 Offshore location 10 km off the coast of Karmøy, Norway
  • 6. 7 Long way from idea to commercial concept Current Onshore connected parks status Medium park Market Focus Demo Cost Focus Model test Concept & theory Technological Focus
  • 7. Extensive model test at Marintek in Trondheim Simulated water depth - 320 meters Significant wave height: 3 – 14 meters (100 years condition) Wind speeds: 8 – 30 m/sec Model tests showed a very good correlation with teoretical models Dato: 2006-05-24 • Side: 8 • Oil & Energy
  • 8. Challenges for floating wind turbines The Challenge: Achieve satisfactory fatigue strengths in the steel tower Low fabrication and installation cost The Solution: A deep bouy (SPAR) with low dynamic response compared to the displacement 3 point anchoring system with low cost components and installation cost Fabrication, completion and testing in sheltered waters Dato: 2006-05-24 • Side: 9 • Oil & Energy
  • 9. Active control reducing turbine motion Dato: 2006-05-24 • Side: 10 • Oil & Energy
  • 10. Innovative cost-efficient anchoring concept Dato: 2006-05-24 • Side: 11 • Oil & Energy
  • 11. 9 Taking the lead from shore to sea 10 m/s 11 m/s 9 m/s 7 m/s 3 MW 3-5 MW 5+ MW 5+ MW 0-30 30-70 100-700 5 MW + WTG Efficient O&M Jacket installation
  • 12. Floating wind turbines Potential for offshore power supply Shore Capacity Total load 100 MW 100 MW Max capacityt 200 MW Dato: 2006-05-24 • Side: 14 • Oil & Energy
  • 13. 125 TWh Hywind A large long term potential Natrual gas from Ormen Lange will produce 125 TWh/year for 20 years The same amount can be produced from a Hywind windfarm with a size of 20 x 40 miles – for ever Dato: 2006-05-24 • Side: 16 • Oil & Energy
  • 14. 10 Bridgehead market Medium-term market opportunities Floating wind turbines have global potential Map: NASA Deepwater sites exist near major consumption areas • Market assessment based on: • • Water depth Wind conditions • Regulatory regimes • Market size • Price/incentives schemes •