Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baotić et al. Anders...
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Transcript of Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baotić et al. Anders...
Arno Brand
Thomas Bak
Torben Knudsen et al.
Gerrit van de Molen et al.
Mato Baotić et al.
Anders Rantzer et al.
Quasi-steady Wind Farm Control Models
FP7-ICT STREP 224548 / Aeolus
2
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
Motivation & History
Developments
Another model
Comparison
Summary & Outlook
Outline
FP7-ICT STREP 224548 / Aeolus
3
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
FP7-ICT STREP 224548 / Aeolus
Motivation & History
Source: Knudsen et al., Euromech 508, 2009
4
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
FP7-ICT STREP 224548 / Aeolus
Motivation & History
Source: Johnson & Thomas, 2009 ACC, 2009
5
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
FP7-ICT STREP 224548 / Aeolus
reference: total farm power
control object =
wind farm
model based control =
farm control
System Controller
power & speed references
disturbances to
wind field
power produced fatigue measures
Motivation & History
6
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
Decentralized Dynamic State-space Controller
FP7-ICT STREP 224548 / Aeolus
Developments
Torben Knudsen, Mohsen Soltani, Thomas Bak
7
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
Dynamic Wind Flow Model
State-space representation
Wind Speed
Thrust Coefficient
Maryam Soleimanzadeh, Rafael Wisniewski
FP7-ICT STREP 224548 / Aeolus
Developments
8
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
Nominal Supervisory Control with MPC
MPC1
MPC2
MPCm
Power referencesP ,P , ... ref11 ref21
ref12 ref22
Power referencesP ,P , ...
ref1m ref2mP ,P , ...
Switch/Interpolation
Non-linear MPC
AvailablePower
CalculationΣ
Power referencesP ,P , ... ref1 ref2
Average wind speedFarm power demand
Farm available power
avail1
Available powersP ,P , ... avail2
Farm power demandWind speeds
Turbine statuses
FP7-ICT STREP 224548 / Aeolus
Gerrit van der Molen, Petros Savvidis, Mike Grimble
optimizer
1z
process
observer
Δu(k) u(k)
u(k-1)
z(k)
y(k)
fset(k)
x(k/k)
controller
predictor
x(k ,k ..k /k)Np1 2
constraints
y(k ,k ..k /k)Np1 2
Developments
9
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
FP7-ICT STREP 224548 / Aeolus
Supervisory Controller
NOMINAL CONTROLLER
RECONFIGURABLE CONTROLLER
demPWFrefP
demP
demP
MEASUREMENTS
OPTIMIZATION DATA
WIND FARM CONTROLLER
WIND FARM
Requirements: Model-based optimal controller, 1 Hz refresh rate
Mato Baotić, Mate Jelavić, Vedrana Spudić, Ned Perić
Developments
10
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
Stationary Wind Field Interaction Model
FP7-ICT STREP 224548 / Aeolus
Daria Madjidian, Anders Rantzer
Developments
Wind speed model
Wind farm model
11
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
Quasi-steady Wind Farm Flow Model
FP7-ICT STREP 224548 / Aeolus
wake model
T1 - T3
wake model
T2 - T4
separation distances T2 and T3
separation distances T2 and T4
upstream turbulence
upstream wind direction
coordinates T1, T2, ... ,Tn
upstream wind speed
etc turbine model
T1
wake model
T1 - T2
turbine model
T2
wake model
T2 - T3
cluster model
separation distances T1 and T2
separation distances T1 and T3
Another Model
Arno Brand, Jan Willem Wagenaar
12
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
Model Output qsWFFM
FP7-ICT STREP 224548 / Aeolus
Forward
({ {WS, BPA, RS}iklm, {Power, Loads}iklm) = f( {WSk, WDl, TIm} )
state output external conditions
Inverse
({WSk, WDl, TIm}, {WS, BPA, RS}iklm, {Loads}iklm) = g( {Power}iklm )
external conditions state loads power referenceWS = Ambient wind speed
WD = Ambient wind direction
TI = Turbulence intensity
BPA = Blade pitch angle
RS = Rotor speed
Another Model
13
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
FP7-ICT STREP 224548 / Aeolus
Row with 10 NREL 5 MW wind turbines
0.0
0.2
0.4
0.6
0.8
1.0
0 10 20 30 40 50
x/D [-]P
/Pn
om
[-]
PowRef = Max
PowRef = 16.5 MW
Model Comparison
Turbine separation: 5D Wind speed: 8 m/sPower references: 10 x 5.0 MW and 10 x 1.65 MW
0
5
10
15
20
25
0 10 20 30 40 50
x/D [-]
V [
m/s
]
PowRef = Max
PowRef = 16.5 MW
14
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
FP7-ICT STREP 224548 / Aeolus
Row with 10 NREL 5 MW wind turbines
0
5
10
15
20
25
0 10 20 30 40 50
x/D [-]
V [
m/s
]
PowRef = Max
PowRef = 31 MW
Turbine separation: 5D Wind speed: 11 m/sPower references: 10 x 5.0 MW and 10 x 3.1 MW
0.0
0.2
0.4
0.6
0.8
1.0
0 10 20 30 40 50
x/D [-]P
/Pn
om
[-]
PowRef = Max
PowRef = 31 MW
Model Comparison
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Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
FP7-ICT STREP 224548 / Aeolus
Wind farm control strategies in order to
Track power reference
Minimize mechanical loading
Quasi-steady wind farm control models
Demonstration of wind farm control solutions
Summary & Outlook
16
Motivation & History - Developments - Another Model - Comparison - Summary & Outlook
Contact
Arno J. Brand
ECN Wind Energy Wind turbine rotor and Wind farm Aerodynamics
M: P.O. Box 1, NL 1755 ZG Petten, Netherlands E: [email protected] T: +31 224 56 4775 F: +31 224 56 8214 I: nl.linkedin.com/in/arnobrand
FP7-ICT STREP 224548 / Aeolus