Embed Size (px)
Citation preview
Linné Centre
Gotland University
Wind Turbine Wake Models
Stefan Ivanell
Associate Professor
Director of Energy Technology, Gotland University
Dep. of Mechanics, FLOW, KTH
www.ivanell.se 9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 1
Linné Centre
Gotland University
• Background - Wake Activities
• Basic Wake Research
• Turbine Interaction-Farm optimization
• Farm-Farm Interaction
Outline
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 2
Linné Centre
Gotland University
• Background - Wake Activities
• Basic Wake Research
• Turbine Interaction-Farm optimization
• Farm-Farm Interaction
Outline
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 3
Linné Centre
Gotland University
Nordic Consortium
Teknikgruppen AB
~ 15 Senior researcher
7 PhD students
Nordic Consortium:
Optimization and Control of Wind Farms
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 4
Linné Centre
Gotland University
Tasks
Task 1 – Wake stability and interaction, NUM (Sasan), KTH
Task 2 – Wake stability and interaction, EXP (Ylva), KTH
Task 3 – Optimization (Søren), DTU
Task 4 – Farm control and optimization (Karl), HGO/KTH
Task 5 – ICEWIND (Görkem), HGO/KTH
Task 6 – FarmFarm (Ola), HGO/KTH
Task 7 – Farm control (Ingemar), Teknikgruppen
IEA Wind (31-WakeBench, 29-NextMex, 11-Genaral WE)
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 5
Linné Centre
Gotland University
• Background - Wake Activities
• Basic Wake Research
• Turbine Interaction-Farm optimization
• Farm-Farm Interaction
Outline
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 6
Linné Centre
Background on wakes
Stability analysis of the tip vortices of a wind turbine Wind Energy 13:8, 2010, Pages: 705-715
Analysis of numerically generated wake structures Wind Energy 12:1, 2009, Pages: 63-80
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 7
Linné Centre
Gotland University
Simulation Methods
● EllipSys3D
● Impossible to represent the flow structure locally around the blade and the wake at the same time
● ACD, ACL
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 8
Linné Centre
Gotland University
[Montgomerie, Dahlberg]
Wake structure
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 9
Linné Centre
Gotland University
Stability of the tip vorticies
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 10
Linné Centre
Gotland University
Instability mode: iso-contours of vorticity; 0.33Hz, 0.66Hz
Sasan Sarmast
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 11
Linné Centre
Gotland University
Pre-generated turbulent atmospheric boundary layer with ACD
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 12
Linné Centre
Gotland University
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 13
Linné Centre
Simulation of 9 turbines - with and without atmospheric turbulence
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 14
Linné Centre
Gotland University
Simulation of 9 turbines - with and without atmospheric turbulence
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 15
Linné Centre
Gotland University
• Background - Wake Activities
• Basic Wake Research
• Turbine Interaction-Farm optimization
• Farm-Farm Interaction
Outline
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 16
Linné Centre
Lillgrund Horns Rev
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 17
Linné Centre
Wind veer
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 18
Linné Centre
Wind veer
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 19
Linné Centre
Wind veer
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 20
Linné Centre
Simulations including wind veer
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 21
Linné Centre
Gotland University
Lillgrund
Sweden
Denmark
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 22
Linné Centre
Gotland University
Lillgrund (48 SWT-2.3 MW) 3.3 x D
4.3 x D
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 23
Linné Centre
Gotland University
Vakförluster i rad 1, 3 och 5 (3.3xD)
Row 1
Row 3
Row 5
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 24
Linné Centre
Gotland University
Wake Losses
0,0
0,2
0,4
0,6
0,8
1,0
1,2
Row_A Row_B Row_C Row_D Row_E Row_F Row_G Row_H
Row_number
Re
lative
po
wer
Row_1_WD_129,0
Row_3_WD_129,0
Row_5_WD_129,1
[Jan-Åke Dahlberg]
Row 1
Row 3
Row 5
Increased Production
Decreased Loads
CFD Simulation, Karl Nilsson
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 25
Linné Centre
Gotland University
• Background - Wake Activities
• Basic Wake Research
• Turbine Interaction-Farm optimization
• Farm-Farm Interaction
Outline
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 26
Linné Centre
Gotland University
Park-Park Interaktion
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 27
Linné Centre
Gotland University
Park vak bakom Horns rev
[Sten Frandsen, Kurt Hansen et.al., The making
of a 2nd generation wind farm model]
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 28
Linné Centre
Gotland University
Återhämtning efter Horns Rev
[Sten Frandsen, Kurt Hansen et.al., The making
of a 2nd generation wind farm model]
9th Deep Sea Offshore Wind R&D Seminar, January 19-20, 2012, Trondheim, Stefan Ivanell, 29
