INNWIND.EU Offshore wind energy DTU Contributions to WP4.2 Technology, ecomony, trends and research. Henrik Bredmose Thomas Buhl
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1 INNWIND.EU Offshore wind energy DTU Contributions to WP4.2 Technology, ecomony, trends and research Henrik Bredmose Thomas Buhl
2 DTU organization 2
3 DTU Wind Energy Technical University of Denmark Sections: Aeroelastic design Wind Turbines Wind energy systems Test and measurements Fluid mechanics Composite and material mechanics Metallic materials Meteorology
4 Who am I? Henrik Bredmose Associate prof. Offshore Wind Energy, DTU Mech. Engng. /DTU Wind Energy Assistant prof. Offshore Wind Energy, DTU Mech. Engng Research engineer, DHI Post doc, Bristol University 2002 PhD from DTU in Wave Hydrodynamics
5 Who am I? Henrik Bredmose Associate prof. in offshore wind energy DTU Wind Energy Loads and structural response of offshore wind turbines Loads and structural response of offshore wind turbines
6 Future developments The North Sea development Economy as driver for technology Current trends Soil
7 Facts on offshore wind energy market
8 Installed capacity The European offshore wind industry key trends and statistics 2012 (EWEA)
9 Installed capacity The European offshore wind industry key trends and statistics 2012 (EWEA)
10 Market share wind farm owners Cumulative 2012 The European offshore wind industry key trends and statistics 2012 (EWEA)
11 Installed capacity / Work carried out in 2012 The European offshore wind industry key trends and statistics 2012 (EWEA)
12 Danish tender announced 2013
13 Danish tender announced 2013
14 Future developments The North Sea development Economy as driver for technology Current trends Soil
15 Annual investment in offshore wind farms The European offshore wind industry key trends and statistics 2012 (EWEA)
16 Investment in offshore wind farms 3 2,5 1,5 1 0,5 g Ri g R ob i n un d en bo gr Bu r Li ll Ho yl e N ys Sc te ro d by sa nd Ke s nt ich Fl at sø N or th I Sa m ev R or ns H lg r un de n 0 M id de Mill. /MW 2 Source: Lemming, Morthorst and Clausen: Offshore wind power experiences. Potential and key issues for deployment, Risø-R-1673(EN), Jan 2008
17 Cost development
18 Depth and distance to shore The European offshore wind industry key trends and statistics 2012 (EWEA) 2012 average: 22m; 29km
19 Why increased? Foundations O&M Electrical infrastructure
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21 Offshore wind challenge: Cost of Energy From the Megavind Strategy for Offshore Wind Research, December 2010
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24 Upscaling?
25
26 This requires material development and new designs
27
28 Alpha Ventus The 12 wind turbines at Alpha Ventus are 6 Areva Multibrid M Repower 5 MW Areva Multibrid THM 244 t Repower 5M THM 430 t 28 Risø DTU
29
30 The Enercon wind turbine (gearless) Enercon THM t 30 DCAMM 2011
31 The monopile foundation Gerrad Hassan and Partners Ltd. Horns Reef I (Denmark), depth 10-14m
32 The monopile: Steel tube and transition piece Aarsleff Bilfinger Berger Joint Venture Applied at depths up to 45m Simple to construct and install Cost-efficient Diameter up to 6m Driven up to 30m into the sea bed Connection of transition piece DNV
33 Future developments The North Sea development Economy as driver for technology Current trends Soil
34 Depth and distance to shore The European offshore wind industry key trends and statistics 2012 (EWEA) 2012 average: 22m; 29km
35 Jacket foundations Gerrad Hassan and Partners Ltd. Alpha Ventus (Germany)
36 Jacket foundations Gerrad Hassan and Partners Ltd. Applicable at large depth (e.g. 70 m) Stiff Vulnerable to fatigue Three- and four legged versions Transition piece Piled into sea bed
37 Carbon Trust Winning concepts
38 The suction bucket monotower Universal Foundations: Suction bucket monotower
39 The suction bucket monotower Up to 55m depth Cost efficient Behaves like gravity base foundation Installation by suction No rocks (few) Easy removal Universal Foundations: Suction bucket monotower
40 Carbon Trust Winning concepts
41 Floating wind turbines The Hywind concept Installed by Statoil April-June 2009 Siemens 2.3 MW wind turbine Catenary moored spar buoy
42 Offshore installation 2003 Nysted 72 x 2.3 MW - on a nice day 42 Risø DTU RISØ offshore course 8-11 November 2010
43 160.9m x 49m - Jackup on 75m water Crane capability of 1,200 t Room for 111 people
44 Future trends The North Sea development Economy as driver for technology Current challenges Soil
45
46
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48 WAsP 10 - Google Earth
49 Optimal wind farm layout?
50 Cost model Maximize Finance balance Maximize power production (WP) Minimize cost Minimize foundation cost Minimize cable cost Minimize maintenance FB=WP 1 p sf C 1 r c1 r i NL XN L r c2 r i p sf C 1 NA XN A, C=CF CI CT CE CM Maintenance cost Electrical infrastructure cost Civil engineering infrastructure co Installation cost Foundation cost
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54 Optimal design of substructures
55 Transition piece Hot spots in jacket node
56 Loads and structural response of offshore wind turbines
57 Future developments Current trends The North Sea development Economy as driver for technology Henrik Bredmose Associate prof. in offshore wind energy Soil DTU Wind Energy
Offshore Wind Energy: Research needs and Danish competences
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