Research at alpha ventus Joint research at Germany s first offshore wind farm

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1 Research at alpha ventus Joint research at Germany s first offshore wind farm Stefan Faulstich, Michael Durstewitz, Bernhard Lange, Eva Otto Fraunhofer Institute for Wind Energy and Energy System Technology IWES, Kassel, Germany Funding Body Supervisor Coordination

2 Content Alpha ventus, milestones layout RAVE Objectives Measurements Exemplary results and beyond Continuation of RAVE Technology monitoring 2

3 The Fraunhofer Institute for Wind Energy and Energy System Technology IWES Wind energy Photovoltaics Applications-oriented research in wind energy & energy systems technology for renewable energies One of 80 Fraunhofer Institutes Budget ~ 22 million Staff ~ 300 Funding by Federal Ministries, Länder and the EU; Industry Electricity grids Hydro power Fraunhofer IWES Bioenergy Marine energies 3

4 The Fraunhofer IWES experimental facilities Exemplary Highlights Competence Center Rotor Blade Climate chamber 200 meter measuring mast Fraunhofer IWES 4

5 alpha ventus and RAVE 2007 in Germany: Very ambitious offhore plans, but no offshore turbine German sites: far out and in deep water 5

6 Alpha ventus: milestones 2001 Approval 2003 FINO 1 operating 2008 Substation install Export cable install 2009 All WT installed Infield cable installed All WT operational 2010 Official inauguration alpha ventus / DOTI 6

7 Alpha ventus: project details REpower 5M Fino 1 AREVA Wind M5000 North Sea 45 km north of Borkum Water depth: 30 m 12 turbines 5 MW class -AREVA Wind M5000 -Repower 5M DOTI 7

8 Alpha ventus / results 2011 Production (2011): 267 GWh 4,450 full load hours 8

9 RAVE Research at alpha ventus Funded by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) Accompanying research at the alpha ventus test site 33 R&D projects 51 mill. 50+ project partners ~200 Scientists RAVE Steering Committee : 9

10 Main objectives of RAVE Demonstration Development Investigation of OWP issues DOTI 2009; Boris Valov, Fraunhofer IWES; DEWI; Sebastian Fuhrmann; Fraunhofer IWES 10 Expand research, experience & expertise

11 RAVE R&D contents measurement service 11

12 RAVE measurements Environmental investigations Turbine-specific measurements BSH DEWI 12

13 RAVE measurements Detailed Load and turbine data from four wind turbines LiDAR (upwind and downwind) SCADA data of all turbines Geological, oceanographic and environmental data Electrical data from substations Meteorological data from FINO1 REpower 5M AREVA Wind M5000 DOTI GL 13

14 RAVE measurements Structural dynamics Meteorology Wave water pressure Hydrology / Geology Sound In total about 1300 Sensors! Bird emmission Data Warehouse: 10 Tbyte, 85 accredidated observation users Corrosion Operational data 14

15 RAVE 2012: exemplary research results Development and test of non invasive methods to monitor imperfections DOTI, 2009 Development of a monitoring device/tool for grouted joints Wave load models: real/measured loads from breaking waves will be included in future design ISD, Leibniz Universität Hannover 15

16 RAVE 2012: exemplary research results Lidar based control can improve the energetic output of a turbine by 1-2 % Progress in turbulence and wake simulation and in understanding turbulence interaction between offshore wind farms An operation and failure statistics data base is of high relevance progress is underway GL Garrad Hassan REpower Systems SE DOTI,

17 RAVE 2012: exemplary research results Bubble curtains reduce pile driving noise emission effectively Operational sound is of lower ecological relevance Hydrotechnik Lübeck GmbH Social acceptance increased 2011 compared to 2009; Martin-Luther-Universität Halle-Wittenberg 17

18 RAVE 2012: exemplary research results 30 Offshore-specific wind power forecasts and power fluctuation forecasts total flux [MW] M. Siefert, Fraunhofer IWES 0 Control of offshore wind farm clusters date 18

19 RAVE RAVE has achieved its goals: Proven the offshore-capability of the 5 MW turbine class Facilitated further development of offshore wind technology in many areas Improved the knowledge about offshore wind utilisation Produced an invaluable and unique data set of measurements RAVE will continue, but the focus will move: from design and erection to operation and maintenance from demonstration to research 19

20 What is RAVE today? A research lab in the middle of the North Sea A huge unique set of measurement data A research community dedicated to OWP An interdisciplinary knowledge base for OWP topics Fraunhofer IWES; Leibniz Universität Hannover; REpower Systems; Reinhold Hill; Klaus Lucke; BSH 20

21 Technology Monitoring Scientific Measurement and Evaluation Program ( 250 MW Wind ( )) monthly operation reports and Incident reports from wind turbines 1983 Technology development Learning curves Reliability 2010

22 Technology Monitoring mean annual failure frequency 4,0 3,8 3,6 3,4 3,2 3,0 2,8 2,6 2,4 2,2 2,0 1,8 1,6 1,4 1,2 1,0 0,8 0,6 0,4 0,2 0, year of operation year of production 22

23 Technology Monitoring To answer fundamental questions on development of wind power offshore General monitoring To optimize operation and maintenance Systematic collection and evaluation of operational experiences 23

24 Thank you for your attention! with info about the individual research projects presentation slides of the International Conference RAVE 2012 RAVE SCIENCE DOCUMENTARY Challenge Offshore All pictures in this presentation are subject to copyright. 24