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Wind Farm

1. Introduction2. Wind turbine

Wind speed Wind turbine

3. Generator DFIG Direct drive

Dr. Dharshana MuthumuniSeptember 2!

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Main components

Introduction

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Turbine Generator Connection

#1 #2

Rectifier

RL

R

RL

RectifierW

Te

TmVw

Beta

W P

Wind TurbineMO 2 T!"e

Wind TurbineGoernor

Beta

P$MO 2 T!"e

Vw%&

Wind &ourceMean

TIM%

w

P

&!'tem

Introduction

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1. Wind speed distribution""""2. Short term #ind speed variations3. Mode$in% #ind speed

Vw

Wind &ource

Gu'tMean

Ram"(oi'e

TmVw

Beta

W P

Wind TurbineMO 2 T!"e

Wind TurbineGo#ernor

Wm

Beta

P$MO 2 T!"e

Turbine)Wind &"eed

Turbine aero dynamic model

Pitch control

Wind speed model

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Vw%&

Wind &ourceMean

&SC'D a$$o#s mode$in% o(

mean #ind speedShort term #ind) %usts* ramps and noise.

Turbine)Wind &"eed

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Main * Gra"+'

,-, 1-, 2-, .-, /-, 0-, -, -, 3-, 4-, 1,-,

2-,

/-,

-,

3-,

1,-,

12-,

1/-,

!

Wind5'"eed

Main * Gra"+'

,-0 1-,, 1-20 1-0, 1-0 2-,, 2-20 2-0, 2-0 .-,,

3-,,

3-0,

4-,,

4-0,

1,-,,

1,-0,

11-,,

!

Wind5'"eed

Main * Gra"+'

,-/2, ,-//, ,-/, ,-/3, ,-0,, ,-02, ,-0/, ,-0, ,-03, ,-,,

3-,,

3-0,

4-,,

4-0,

1,-,,

1,-0,

11-,,

!

Wind5'"eed

Gu't

Ram"

(oi'e

Turbine)Wind &"eed

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Mode6in$ &+ort term wind '"eed ariation'

+ecorded #ind speed data ,speed vs time- can be used ina &SC'D simu$ation

wind#ariation-t7tw ind#ariation-t7t

Main * Gra"+'

,-, ,-18 ,-28 ,-.8 ,-/8 ,-08 ,-8 ,-8 ,-38 ,-48 1-,8 ---------

/-,

0-,

-,

-,

3-,

4-,

1,-,

m9'

ind '"eed

Turbine)Wind &"eed

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Vw

Wind &ource

Gu'tMean

Ram"

(oi'e

TmVw

Beta

W P

Wind TurbineMO 2 T!"e

Wind TurbineGo#ernor

Wm

Beta

P$MO 2 T!"e

Wind Turbine

Turbine aero dynamic model

Pitch control

Wind speed model

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1. urbine components2. 'erod/namics

3. &o#er coe((icient0. Contro$ options

Wind Turbine

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Wind Turbine

v

rpmD

speedwind

speedtiprotorTSR

60

===

),( p

C

3...2

1vACP pm =

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Wind Turbine

1. Sta$$ ( )2. &itch 3. 'ctive sta$$ contro$

Vw

Wind &ource

Gu'tMean

Ram"(oi'e

TmVw

Beta

W P

Wind TurbineMO 2 T!"e

Wind TurbineGo#ernor

Wm

Beta

P$MO 2 T!"e

Turbine aero dynamic model

Pitch control

Wind speed model

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&SC'D pitch contro$ mode$

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1. Variab$e and (ied speed2. Induction machines3. Doub$/ (ed induction machines

0. S/nchronous and &M machines

Wind Generator

v

rpmD

speedwind

speedtiprotor

60

==

),( pC

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IM

Ca"acitor' or

&VC

networ8

Gear bo7

Direct connected induction machine)

o s$ip rin%sbrushes* S4uirre$ ca%e machine has a

simp$e robust construction 5ess maintenance 6Fied speed7 operation

Wind Generator

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or4ue 84uation in Stead/ State

Torque

T-Rated

T-s Curve

Torque

7.368 10 4

8.541 10 5

T s( )

Trat s( )

0.990 Speed s( )

9peratin% re%ion o( the machine (a$$s over a sma$$ speedran%e

o reactive po#er contro$

Tor:ue

&"eed ;"u