12th Deep Sea Offshore Wind R&D Conference, EERA DeepWind 2015 Energy Procedia Volume 80 Trondheim, Norway 4-6 February 2015 Editors: Randi Aukan ISBN: 978-1-5108-1680-0
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TABLE OF CONTENTS EDITORIAL... 1 John Olav Giæver Tande, Trond Kvamsdal, Michael Muskulus REAL-TIME HYBRID MODEL TESTING OF FLOATING WIND TURBINES: SENSITIVITY TO LIMITED ACTUATION... 2 Erin E. Bachynski, Valentin Chabaud, Thomas Sauder EVALUATION OF FATIGUE LOADS OF HORIZONTAL UP-SCALED WIND TURBINES... 13 Romans Kazacoks, Peter Jamieson DYNAMIC ANALYSIS OF A BRACELESS SEMISUBMERSIBLE OFFSHORE WIND TURBINE IN OPERATIONAL CONDITIONS... 21 Madjid Karimirad, Constantine Michailides A FAST REDUCED ORDER METHOD FOR ASSESSMENT OF WIND FARM LAYOUTS... 30 Yngve Heggelund, Chad Jarvis, Marwan Khalil ASSESSMENT OF GEARBOX OPERATIONAL LOADS AND RELIABILITY UNDER HIGH MEAN WIND SPEEDS... 38 Dariusz Dabrowski, Anand Natarajan SUPERCONDUCTING FAULT CURRENT LIMITERS FOR HVDC SYSTEMS... 47 Xiaoze Pei, Alexander C. Smith, Mike Barnes DESIGN ASPECTS ON WINDING OF AN MGB2 SUPERCONDUCTING GENERATOR COIL... 56 N. Magnusson, J. C. Eliassen, A. B. Abrahamsen, A. Nysveen, J. Bjerkli, M. Runde, P. King COST BENEFIT ANALYSIS OF MOTHERSHIP CONCEPT AND INVESTIGATION OF OPTIMUM CHARTERING STRATEGY FOR OFFSHORE WIND FARMS... 63 Yalcin Dalgic, Iraklis Lazakis, Iain Dinwoodie, David McMillan, Matthew Revie, Jayanta Majumder MODELLING AND ANALYSIS OF CIGRE HVDC OFFSHORE MULTI-TERMINAL BENCHMARK GRID... 72 Jordi Pegueroles, Mike Barnes, Oriol Gomis, Antony Beddard, Fernando D. Bianchi PERFORMANCE TEST OF A 3MW WIND TURBINE EFFECTS OF SHEAR AND TURBULENCE... 83 Lars Morten Bardal, Lars Roar Sætran, Erik Wangsness OPTIMIZATION OF ROUTING AND SCHEDULING OF VESSELS TO PERFORM MAINTENANCE AT OFFSHORE WIND FARMS... 92 Magnus Stålhane, Lars Magnus Hvattum, Vidar Skaar OPTIMIZATION OF OFFSHORE WIND TURBINE SUPPORT STRUCTURES USING AN ANALYTICAL GRADIENT-BASED METHOD... 100 Kok-Hon Chew, Kang Tai, E. Y. K. Ng, Michael Muskulus COMPARATIVE LEVELIZED COST OF ENERGY ANALYSIS... 108 Raphael Ebenhoch, Denis Matha, Sheetal Marathe, Paloma Cortes Muñoz, Climent Molins MULTI-TERMINAL HVDC MODELING IN POWER FLOW ANALYSIS CONSIDERING CONVERTER STATION TOPOLOGIES AND LOSSES... 123 Guang Zeng, Tobias Hennig, Kurt Rohrig OFFSHORE WIND FARM WAKE EFFECT ON STRATIFICATION AND COASTAL UPWELLING... 131 Mostafa Bakhoday Paskyabi LAGRANGIAN MEASUREMENT OF WAVES AND NEAR SURFACE TURBULENCE FROM ACOUSTIC INSTRUMENTS... 141 Mostafa Bakhoday Paskyabi, Helge Thomas Bryhni, Joachim Reuder, Ilker Fer PROBABILISTIC FATIGUE ANALYSIS OF JACKET SUPPORT STRUCTURES FOR OFFSHORE WIND TURBINES EXEMPLIFIED ON TUBULAR JOINTS... 151 Sebastian Kelma, Peter Schaumann MEASUREMENT CAMPAIGN OF A LARGE ROTOR WIND TURBINE... 159 Lene Eliassen, Eivind Sæta, Jørgen Krokstad STUDY OF THE EFFECT OF WATER DEPTH ON POTENTIAL FLOW SOLUTION OF THE OC4 SEMISUBMERSIBLE FLOATING OFFSHORE WIND TURBINE... 168 I. Bayati, S. Gueydon, M. Belloli THE CAPABILITIES AND EFFECTIVENESS OF REMOTE INSPECTION OF WIND TURBINES... 177 Øyvind Netland, Gunnar D. Jenssen, Amund Skavhaug
A COMPARISON OF VSC-HVDC WITH LOW FREQUENCY AC FOR OFFSHORE WIND FARM DESIGN AND INTERCONNECTION... 185 Jonathan Ruddy, Ronan Meere, Terence O Donnell SENSITIVITY OF WAVE FATIGUE LOADS ON OFFSHORE WIND TURBINES UNDER VARYING SITE CONDITIONS... 193 Lisa Ziegler, Sven Voormeeren, Sebastian Schafhirt, Michael Muskulus MODELLING OF MMC-HVDC SYSTEMS AN OVERVIEW... 201 A. Beddard, M. Barnes EFFECT OF OFFSHORE WIND FARM DESIGN ON THE VERTICAL MOTION OF THE OCEAN... 213 Ole Henrik Segtnan, Konstantinos Christakos TREATING WIND MEASUREMENTS INFLUENCED BY OFFSHORE STRUCTURES WITH CFD METHODS... 223 Leonid Vasilyev, Konstantinos Christakos, Brian Hannafious RELATIVE ASSESSMENT OF FATIGUE LOADS FOR OFFSHORE WIND TURBINE SUPPORT STRUCTURES... 229 Lars Einar S. Stieng, Ruth Hetland, Sebastian Schafhirt, Michael Muskulus DC VOLTAGE CONTROL FOR FAULT MANAGEMENT IN HVDC SYSTEM... 237 Anastasios Oulis Rousis, Olimpo Anaya-Lara CHARACTERISATION OF SINGLE WIND TURBINE WAKES WITH STATIC AND SCANNING WINTWEX-W LIDAR DATA... 245 Valerie-M. Kumer, Joachim Reuder, Benny Svardal, Camilla Sætre, Peter Eecen COUPLED MOORING SYSTEMS FOR FLOATING WIND FARMS... 255 Marek Goldschmidt, Michael Muskulus DROPLET EROSION PROTECTION COATINGS FOR OFFSHORE WIND TURBINE BLADES... 263 E. A. Valaker, S. Armada, S. Wilson CHARACTERIZATION OF WAVE SLAMMING FORCES FOR A TRUSS STRUCTURE WITHIN THE FRAMEWORK OF THE WAVESLAM PROJECT... 276 Ignacio E. Rausa, Michael Muskulus, Øivind A. Arntsen, Kasper Wåsjø INFLUENCE OF TECHNICAL LIMITATIONS AND OPERATION ON SIZING OF AN OFFSHORE ENERGY STORAGE CONNECTED TO AN OFFSHORE WIND FARM... 284 Ole Christian Spro, Olve Mo, Karl Merz, John Olav Tande SPLINE BASED MESH GENERATOR FOR HIGH FIDELITY SIMULATION OF FLOW AROUND TURBINE BLADES... 294 E. Fonn, A. Rasheed, A. M. Kvarving, T. Kvamsdal INVESTIGATION OF THE IMPACT OF WAKES AND STRATIFICATION ON THE PERFORMANCE OF AN ONSHORE WIND FARM... 302 Mandar Tabib, Adil Rasheed, Trond Kvamsdal EFFECT OF TURBULENCE INTENSITY ON THE PERFORMANCE OF AN OFFSHORE VERTICAL AXIS WIND TURBINE... 312 M. Salman Siddiqui, Adil Rasheed, Trond Kvamsdal, Mandar Tabib INTEGRATED SIMULATION CHALLENGES WITH THE DEEPWIND FLOATING VERTICAL AXIS WIND TURBINE CONCEPT... 321 David Verelst, Helge A. Madsen, Michael Borg, Uwe Schmidt Paulsen, Harald G. Svendsen, Petter Andreas Berthelsen OUTCOMES OF THE DEEPWIND CONCEPTUAL DESIGN... 329 Uwe S. Paulsen, Michael Borg, Helge Aa. Madsen, Troels Friis Pedersen, Jesper Hattel, Ewen Ritchie, Carlos S. Ferreira, Harald Svendsen, Petter A. Berthelsen, Charles Smadja DEVELOPMENT OF A PRESCRIBED WAKE MODEL FOR SIMULATION OF WIND TURBINES... 342 Ludwig Krause, Clemens Hübler GRID MODEL REDUCTION FOR LARGE SCALE RENEWABLE ENERGY INTEGRATION ANALYSES... 349 Harald G. Svendsen PLANNING OF OPERATION & MAINTENANCE USING RISK AND RELIABILITY BASED METHODS... 357 Mihai Florian, John Dalsgaard Sørensen RESAMPLING OF DATA FOR OFFSHORE GRID DESIGN BASED ON KERNEL DENSITY ESTIMATION AND GENETIC ALGORITHM... 365 Vin Cent Tai, Kjetil Uhlen
INTEGRATED MODELLING PLATFORM FOR DYNAMIC PERFORMANCE ASSESSMENT OF FLOATING WIND TURBINES... 376 Atsede G. Endegnanew, Kristian Satertro, Sverre Gjerde, Harald Svendsen, Olimpo Anaya-Lara, John O. Tande, Kjetil Uhlen, Svein Gjolmesli EFFECTS OF BEARING CONFIGURATION IN WIND TURBINE GEARBOX RELIABILITY... 392 Juan Gallego-Calderon, Anand Natarajan, Nikolay K. Dimitrov PASSIVE FILTER DESIGN AND OFFSHORE WIND TURBINE MODELLING FOR SYSTEM LEVEL HARMONIC STUDIES... 401 Henrik Brantsæter, Lukasz Kocewiak, Atle Rygg Årdal, Elisabetta Tedeschi ASSESSMENT OF WIND CONDITIONS AT A FJORD INLET BY COMPLEMENTARY USE OF SONIC ANEMOMETERS AND LIDARS... 411 Jasna Bogunovic Jakobsen, Etienne Cheynet, Jonas Snæbjörnsson, Torben Mikkelsen, Mikael Sjöholm, Nikolas Angelou, Per Hansen, Jakob Mann, Benny Svardal, Valerie Kumer, Joachim Reuder DETERMINING THE ECONOMIC VALUE OF OFFSHORE WIND POWER PLANTS IN THE CHANGING ENERGY SYSTEM... 422 Christoph Richts, Malte Jansen, Malte Siefert MESOSCALE NUMERICAL MODELLING OF MET-OCEAN INTERACTIONS... 433 Jakob Kristoffer Süld, Adil Rasheed, Jørn Kristiansen, Øyvind Sætra, Ana Carrasco, Trond Kvamsdal ISOGEOMETRIC METHODS FOR CFD AND FSI-SIMULATION OF FLOW AROUND TURBINE BLADES... 442 Timo Van Opstal, Eivind Fonn, Runar Holdahl, Trond Kvamsdal, Arne Morten Kvarving, Kjell Magne Mathisen, Knut Nordanger, Knut Morten Okstad, Adil Rasheed, Mandar Tabib Author Index