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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

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Quasi-steady Wind Farm Control Models. Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al. Anders Rantzer et al. FP7-ICT STREP 224548 / Aeolus. Outline. Motivation & History Developments Another model Comparison Summary & Outlook. - PowerPoint PPT Presentation

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Page 1: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

Arno BrandThomas 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

Page 2: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

2

Motivation & History - Developments - Another Model - Comparison - Summary & Outlook

Motivation & History

Developments

Another model

Comparison

Summary & Outlook

Outline

FP7-ICT STREP 224548 / Aeolus

Page 3: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

3

Motivation & History - Developments - Another Model - Comparison - Summary & Outlook

FP7-ICT STREP 224548 / Aeolus

Motivation & History

Source: Knudsen et al., Euromech 508, 2009

Page 4: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

4

Motivation & History - Developments - Another Model - Comparison - Summary & Outlook

FP7-ICT STREP 224548 / Aeolus

Motivation & History

Source: Johnson & Thomas, 2009 ACC, 2009

Page 5: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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

Page 6: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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

Page 7: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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

Page 8: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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

Page 9: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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

Page 10: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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

Page 11: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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

Page 12: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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 conditionsInverse({WSk, WDl, TIm}, {WS, BPA, RS}iklm, {Loads}iklm) = g( {Power}iklm ) external conditions state loads power referenceWS = Ambient wind speed

WD = Ambient wind directionTI = Turbulence intensityBPA = Blade pitch angleRS = Rotor speed

Another Model

Page 13: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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

/Pno

m [-

]

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

Page 14: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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

/Pno

m [-

]

PowRef = Max

PowRef = 31 MW

Model Comparison

Page 15: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

15

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

Page 16: Arno Brand Thomas Bak Torben Knudsen et al. Gerrit van de Molen et al. Mato Baoti ć et al

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


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