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Wind Power Plant Modeling Wind Power Plant Modeling Dynamic Model DataDynamic Model DataDynamic Model DataDynamic Model Data
WECC-WGMG
Model Validation
Phoenix, AZ
Model Validation Working Group
November 18-20, 2009
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Wind Turbine Generator (WTG) TopologiesWind Turbine Generator (WTG) Topologies
Four basic types based on PlType 1 Type 2
Four basic types, based on the WTG technology:
Type 1 Fixed-speed, gene rator
Pla ntFee ders
PF controlcapacitor s
acto
gene rator
PlantFeeders
PF controlcapacitor syp p
conventional induction generators
Variable Slip WTG Type 2 Induction generators with
Slip poweras heat loss
ptodc
p
Type 2 Induction generators with variable rotor resistance
Variable Speed WTGs genera torPlant
Feede rsacto
dcto
gene rator
PlantFeeders
Type 3 Type 4
Type 3 Doubly-fed asynchronous generators with rotor-side converter Type 4 Asynchronous generators with full converter interface
full power
todc
toac
partia l power
actodc
dctoac
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
with full converter interface partia l power
PSSE 31 and PSLF 17.0_03PSSE 31 and PSLF 17.0_03
T 1 Fi d S d WTGT 1 Fi d S d WTGType 1: Fixed Speed WTGType 1: Fixed Speed WTG(Induction Generator)(Induction Generator)
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Controller Settings (Type 1) Controller Settings (Type 1)
Control input parameters:p p
Most of the parameters are given and unique for a specific turbine.
This data will be made available from WECC or turbine manufacturers.
Available in PSSE and PSLF
Three modules included: WT1T, WT1G, WT1P
The compensating capacitor is not dynamically modeled but it should be provided and initializedmodeled but it should be provided and initialized from load flow data.
WIND PLANT SPECIFIC ADJUSTMENT: NONE
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 1
W1G1U-PSSE Data WT1G-PSLF Data
Direct Connected Type 1 Generator
wt1g 5 "WTG TERM" 0.60 "1" : #9 mva=110 /"Ls" 3.93 / "Lp" 0.1773 / "Ra" 0.0 / "Tpo" 0 846 /
0.8460
3.927 Tpo 0.846 / "Se1" 0.030 / "Se2" 0.179 / "Acc" 0.5 / "Lpp" 0.0 / "Ll" 0 10 /
0.17730.0
0.11
"Ll" 0.10 / "Tppo" 0.0 / "ndelt" 10 / "wdelt" 0.80
0.031.20.179
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 1
W12T1U-PSSE Data
Two Mass Turbine Model
5.300.00.925
5.01.0
Ht = Htfrac H
H H H
WT1T-PSLF Data
WT1T 5 "WTG TERM" 0.60 "1" : #9 /T
-
+P
t
Hg = H - Ht
K = 2 (2 Freq1 ) H t2 HHg
"H" 5.30 /
"D" 0.0 /
"Htfrac" 0.925 /
"Freq1" 5.0 /
# Optional two-mass model:
Tmech 1s
12Ht
K
Dshaft+
+
+ -
-
+
+ t
1s
tg
Pmech t
tg tg
..s0
s1
FromGovernor
Model
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
"Dshaft" 1.0 / model:
1s
12Hg
+
Telec
++
g-Pgen
g
g..s2
FromGenerator
Model
Example Data of WTG Type 1P d G M d l
W12A1U-PSSE Data WT1P-PSLF Data
wt1p 5 "WTG TERM" 0 60 "1" : #9 /0 015
Pseudo Governor Model
wt1p 5 WTG TERM 0.60 1 : #9 /"Tpe" 0.10 / "Kdroop" 0.015 / "Kp" 0.10 / "Ki" 66.667 / "Pimax" 1.00 /
0.0150.10.0150.10.1
"Pimin" 0.25 / "T1" 0.10 / "T2" 0.10
0.11.00.25
speed
Kp
pimax
1 1 pmechwref
FromTurbineModel
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Kdroop
s0
1
1 + sTpe
Ki 1s
pimin
1 + sT1 1 + sT2
pgen
pref
s1
s2 s3To
GovernorModel
FromGenerator
Model
Type 1: Fixed Speed WTGType 1: Fixed Speed WTG(Induction Generator)(Induction Generator)(Induction Generator)(Induction Generator)
Terminal Voltage Real Powerg
Reactive Power Turbine Speed
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Type 2: Variable Slip WTGType 2: Variable Slip WTGType 2: Variable Slip WTGType 2: Variable Slip WTG(Induction generators with (Induction generators with variable rotor resistance)variable rotor resistance)variable rotor resistance)variable rotor resistance)
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Controller Settings (Type 2) Controller Settings (Type 2)
Control input parameters:p p
Most of the parameters are given and unique for a specific turbine.
This data will be made available from WECC or turbine manufacturers.
Available in PSSE and PSLF (being developed)
Three modules included: WT2T, WT2G, WT2E, WT2A
The compensating capacitor is not dynamically modeled but it should be provided and initialized frommodeled but it should be provided and initialized from load flow data.
WIND PLANT SPECIFIC ADJUSTMENT: NONE
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 2Induction Generator with the
W2G1U-PSSE Data WT2G-PSLF Data
controlled external rotor resistor
0.1266.840.180.00440.1099
1.00.01.200.0
0.00.02170.89880.90.9050.00.00540.020.04
In PSLF, this data is supplied through Module WT2E
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
0.1
Example Data of WTG Type 2Example Data of WTG Type 2
W2E1U-PSSE Data
Rotor resistance control modelRotor resistance control model
0
0.05
1
11
0.99
0.05In PSSE this data is supplied via Module W2G1U
P
Rmax
-
PgenFromGenerator
Model
Rext
Kp1 + sTp
Kpp + Kip / s
s1
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
1 + sTw
+
P vs. slip curve
SpeedFrom
TurbineModel
ToGenerator
ModelRmin
s0
s2
Kw
Example Data of WTG Type 2Example Data of WTG Type 2
W12T1U-PSSE Data
Two mass turbine modelTwo mass turbine model
WT2T-PSLF Data
3.460.000.811.500 300.30
Ht = Htfrac H
Hg = H - HtH
Tmech 11-
+
Pmech
t
t
K = 2 (2 Freq1 ) H t
.
2
H
Hg
FromGovernor
s2Ht
K
1s
12Hg
Dshaft
+
+
+
Telec
-
-
g
+ t
1s
tg
Pgen g
tg tg
.
..
s0
s1
Model
FromGenerator
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
sg+ +
+g-
gs2
Model
Example Data of WTG Type 2Example Data of WTG Type 2
W12A1U-PSSE Data
PseudoPseudo--governor modelgovernor model
0 015
WT2P-PSLF Data
0.01520.01.00.10.10.11.00.25
speed
Kp pimaxFrom
Turbine
Kdroop
s0
1
1 + sTpe
Ki 1s
pimax
pimin
11 + sT1
11 + sT2
pgen
pmechwref
s1
s2 s3To
GovernorModel
FromGenerator
TurbineModel
pref
GeneratorModel
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Type 2: Variable Slip WTG (Induction Type 2: Variable Slip WTG (Induction generators with variable rotor resistance)generators with variable rotor resistance)generators with variable rotor resistance)generators with variable rotor resistance)
Terminal Voltage Real Power
Reactive Power Turbine Speed
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Type 3: Variable Speed WTGType 3: Variable Speed WTGDoubly Fed Induction GeneratorDoubly Fed Induction GeneratorDoubly Fed Induction GeneratorDoubly Fed Induction Generator
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Type 3: Doubly Fed Induction GeneratorType 3: Doubly Fed Induction Generator
Control input parameters: Most of the parameters are given and unique for aMost of the parameters are given and unique for a specific turbine.
This data will be made available from WECC or turbine manufacturers.
varflg = ? WIND PLANT SPECIFIC ADJUSTMENTS:
varflg and vltflg are flags that must be set by the user based on the setting defined for each wind
vltflg = ?
gpower plant to be included in the case study.
Fn = fraction of WTG on the wind plant that are on-line. Used only for VAR control gain adjustment
PFAref = initialized from load flow data
Vc is the controlled bus specified within the module wt3e. It can be terminal voltage or remote Four modules included in PSLF
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
bus voltage or fictitious remote bus voltage.
Vw > 1.0 p.u. will be used to initialize pitch angle.
wt3g, wt3e, wt3t, wt3p
Example of VAR Controller Settings (Type 3 Example of VAR Controller Settings (Type 3 wt3e module)wt3e module) Remote voltage definitionRemote voltage definition
XC = compensating reactance for voltage control (in p.u.) VC = voltage at a remote pointVC = Vf jXC Ift Vf = voltage at busfrom Ift = current flowing from busfrom to busto
wt3e module) wt3e module) -- Remote voltage definitionRemote voltage definition
VC Vf jXC Ift Vf voltage at busfrom Ift current flowing from busfrom to busto
Vrfq = VC computed from the load flow solution at initial condition.
3 4 51 2
WWind TurbineGeneratorEquivalent
Line 1 (1)
Line 2 (2)
I21 2VCVC
I43
V 21_2VC
wt3e 5 "BUS5" 0.575 "1 " 4 "BUS4" 34.5 "1 " 1 : #9 mwcap=33.3 / Thus bus 4 (VC) will be controlled
wt3e 5 "BUS5" 0.575 "1 " 1 : #9 mwcap=33.3 / monitored bus is not defined; Thus terminal voltage (bus 5) is controlled.
wt3e 5 "BUS5" 0.575 "1 " 4 "BUS4" 34.5 3 "BUS3" 34.5 1 " 1 : #9 mwcap=33.3 / Thus remote node (VC) on branch 4-3 is controlled. VC = V4 jXC I43 XC < X43wt3e 5 "BUS5" 0.575 "1 " 2 "BUS2" 138 1 "BUS1" 138 2 " 1 : #9 mwcap=33.3 / Thus remote node (V ) on branch 2-1 is controlled V = V jX I X < X
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Thus remote node (VC ) on branch 2-1 is controlled. VC = V2 jXC I21 XC < X21
Example of VAR Controller Settings (Type 3) Example of VAR Controller Settings (Type 3) Voltage Control is disabledVoltage Control is disabled
Reactive power control:Q Q Q
Voltage Control is disabledVoltage Control is disabled
Eq-cmd
Qcmd = Qref = Qgen_load_flow varflg = 0; vltflg = 0 voltage is not controlled
Eq-cmd
Power factor control: varflg = -1; vltflg = 0 voltage is not controlled
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
voltage is not controlled PFAref is defined at initial load flow solution based on Pgen, Qgen
Example of VAR Controller Settings (Type 3 Example of VAR Controller Settings (Type 3 wt3e module) Voltage Control is enabledwt3e module) Voltage Control is enabled wt3e module) Voltage Control is enabledwt3e module) Voltage Control is enabled
EEq-cmd
Voltage control emulation for plant level reactive compensation: varflg = 1; vltflg = 0 voltage Vc (remote bus) is controlled = Vrfq defined initially from load flow solution terminal voltage Vterm is not regulatedg term g
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example of VAR Controller Settings (Type 3 Example of VAR Controller Settings (Type 3 wt3e module) Voltage Control is enabledwt3e module) Voltage Control is enabled wt3e module) Voltage Control is enabledwt3e module) Voltage Control is enabled
Voltage control emulation for Plant Level Reactive compensation:compensation: varflg = 1; vltflg = 1 voltage is controlled at the Vrfq defined separately the terminal voltage V
Eq-cmd
the terminal voltage Vtermis controlled with the faster control loop (good response during fault event)event).
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example of Pitch Controller Example of Pitch Controller Settings (wt3tSettings (wt3t module)module)Settings (wt3t Settings (wt3t module) module)
Initialize the blade pitch whenThe wind speed V > 1 0 p uThe wind speed Vw > 1.0 p.u.
Pitch Angle - Theta - Initialization
25
30
0
5
10
15
20
T
h
e
t
a
(
d
e
g
r
e
e
)
-5 0 0.5 1 1.5 2 2.5 3
Vw - Wind Speed (p.u.)
Unless we specify that theP
Unless we specify that the wind speed Vw > 1.0 p.u.The initial (pre-fault) pitch angle = 0.
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Real Power SettingsReal Power Settings The wind plant operation may have different output levels In the dynamic:
1 If P = 60MW in load flow solution and MWCAP = 100MW in the dynamic it means that the1. If Pgen = 60MW in load flow solution and MWCAP = 100MW in the dynamic, it means that the wind speed is less than rated wind speed, the turbine speed set point will be initialized accordingly ( ~ 1.12 p.u.) and Vw should be set to Vw < 1.0p.u. , and the blade pitch is adjusted to its optimum ( = 0 degree)
2. If Pgen = 100MW in load flow solution and MWCAP = 100MW in the dynamic, it means that the wind speed is at or higher than rated wind speed the turbine speed set point will be initialized accordingly (1.2 p.u). The pitch angle setting will be as follows (wt3t - module):
If Vw = 1.5 p.u. the wind speed is higher than rated wind speed and the blade pitch must be adjusted at the initial conditionmust be adjusted at the initial condition.
If Vw = 0.7 p.u. this information is ignored and the blade pitch is adjusted to its optimum ( = 0 degree)
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 3Example Data of WTG Type 3
WT3G1-PSSE Data
DoublyDoubly--Fed Induction Generator (Type 3)Fed Induction Generator (Type 3)
0.830.00.00.11 5
67
IBUS, WT3G1, ID, ICON(M), CON(J) to CON(J+4) /
1.5
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 3Example Data of WTG Type 3DoublyDoubly--Fed Induction Generator (Type 3)Fed Induction Generator (Type 3)
WT3G-PSLF Data ( refer to W3G2U for PSSE Equivalent)( refer to W3G2U for PSSE Equivalent)
Fromexwtge
High VoltageReactive Current
Management
Isorc-1X"(efd)
11+ 0.02s
s0
Eq"cmd
exwtge
Fromexwtge
Low VoltageActive CurrentManagement
IPcmd(ladifd)
11+ 0.02s
s1
LVPL & rrpwr
IPlv
exwtge
Vterm
jX"11+ 0 02s
LVPL
LVPL
1.11
VLvplsw = 0
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
1+ 0.02s
Low Voltage Power Logic
Vbrkpt(0.90)
zerox(0.50)
s2Lvplsw = 1
Example Data of WTG Type 3Example Data of WTG Type 3
WT3E1-PSSE Data
Electrical Control for TypeElectrical Control for Type--3 Wind Generator3 Wind Generator
0.150.15 18.0 5.0 0.0 0.05 3.0
0.69 0.78 0.98 1.12 0.74 3.0
0.6 1.12 0.1 0.296-0 436
1.2
0.436 1.1 0.05 0.45 -0.455 05.0
0.050.9 1.2 40.0
0 5
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
-0.5 0.4 0.05 0.05 1.0
Example Data of WTG Type 3Example Data of WTG Type 3Electrical Control for TypeElectrical Control for Type--3 Wind Generator3 Wind Generator
WT3E-PSLF Data
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 3Example Data of WTG Type 3
WT3T1-PSSE Data
Mechanical System Model for TypeMechanical System Model for Type--3 Wind Generator3 Wind Generator
0.444.95
00.00721.98
0.87471.81.5
WT3T-PSLF Data
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 3Example Data of WTG Type 3
WT3P1-PSSE Data
Pitch Control Model for TypePitch Control Model for Type--3 Wind Generator3 Wind Generator
0.3150
253
303027
010
1
WT3P-PSLF Data
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Type 4: Variable Speed WTGType 4: Variable Speed WTGAsynchronous generators with full Asynchronous generators with full
converter interfaceconverter interface
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Type 4: Variable Speed WTG Asynchronous Type 4: Variable Speed WTG Asynchronous generators with full converter interfacegenerators with full converter interfacegenerators with full converter interfacegenerators with full converter interface
Control input parameters: Most of the parameters are given and unique for a specific turbine Most of the parameters are given and unique for a specific turbine. This data will be made available from WECC or turbine manufacturers.
WIND PLANT SPECIFIC ADJUSTMENTS: varflg and vltflg are flags that must be set by the user based on the setting defined for each wind power plant to be included in the case study. Fn = fraction of WTG on the wind plant that are on-line. Used only for VAR control gain adjustment PFAref = initialized from load flow data Refer to type 3 description of Remote Control Voltage Vc and VrfqRefer to type 3 description of Remote Control Voltage Vc and Vrfq Turbine model is ignored.
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 4Example Data of WTG Type 4G t / t d lG t / t d l
W4G1U-PSSE Data
Generator/converter modelGenerator/converter model
0.02 0.02 0.4 0.9 1.11 1.2 2.0 2.0 0.02
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 4Example Data of WTG Type 4G t / t d lG t / t d l
WT4G-PSLF Data
Generator/converter modelGenerator/converter model
From
High VoltageReactive Current
Isorc
(efd)-1
1+ 0.02s
s0
I Qcmd
Fromwt4e
Fromwt4t
Management
Low VoltageActive CurrentManagement
IPcmd(ladifd)
11+ 0.02s
s0
s1
LVPL & rrpwr
IPlv
wt4t
Vterm
jX"11+ 0.02s
LVPL
LVPL
V
Lvplsw = 1
Lvplsw = 0 Lvpl1
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Low Voltage Power Logic
Vbrkpt(0.90)
zerox(0.50)
s2Lvplsw 1
Example Data of WTG Type 4Example Data of WTG Type 4El t i l C t l M d lEl t i l C t l M d lElectrical Control ModelElectrical Control Model
0.15 W4E1U-PSSE Data
18.0 5.0
0.05 0.10
0 00.0 0.08 0.47
-0.47 1.1 0.0 0.5
-0.5 0.05
0 10.10.9 1.1
120.0 0.05 0 05
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
0.051.7
1.11 1.11
Example Data of WTG Type 4Example Data of WTG Type 4El t i l C t l M d lEl t i l C t l M d l
W4E1U-PSSE Data
Electrical Control ModelElectrical Control Model
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Example Data of WTG Type 4Example Data of WTG Type 4
WT4E-PSLF Data
Excitation Control ModelExcitation Control Model
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Electrical Control ModelElectrical Control ModelExample Data of WTG Type 4Example Data of WTG Type 4
Electrical Control ModelElectrical Control ModelExcitation Control ModelExcitation Control Model
VregKiv/s+
Vrfq(vref)
11
Qmax
1/fQords4
+
WT4E-PSLF Data
WindCONTROLEmulator
1+ sTc1+ sTrQmin
1/fN
s5
s4
s3-
Kpv1+ sTv
s2
Qwv
Qcmd
Q
Qmax
Qref(vref) 0
varflg
1
PFAref
+
1
P,Q Priority Flag(pqflag)
Pelec
Qmin
0
pfaflg
1
(vref) 0ref tan
x
s6
(vref)
11+ sTp
-1
Qord(vref)
IqmnIqmx
P Priority
10
Q Priority
Iqmn Iqmx
Vt
Iqmxv
1.6qmax
Vt
++
Qcmd
Qgen
Vref
Vmax
Kvi / sIQcmd
s0 s1
Kqi / s
-
-Iqmx
(efd)
I 2 I 2
Minimum
-1
IPcmd
Minimum
-1
Iqhl Minimum
Vt
Iqmxv
1.0
P d
Vterm Vmin
Ipmx IPcmd
Iqmn to WindGenerator
Modelwt4gConverter Current LimitP,Q Priority Flag
Porx
ImaxTD ImaxTD2 - IPcmd
2
ImaxTD2 - IQcmd
2IQcmd
Minimum
Iphl
Minimum
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
Pord
Vterm
.
.(ladifd)
to WindGenerator Model
wt4g
orx
(vsig)from Wind
Turbine Modelwt4t IpmxIpmx
Example Data of WTG Type 4Example Data of WTG Type 4Electrical Control ModelElectrical Control Model
Power Converter DynamicPower Converter Dynamic
PSLF DataPSLF Data
1 + sTpw
1Kpp + s
Kip
dPmx
+
-
+
-Pord
PrefPref
Pelec
From Wind
piin piou
s0pw
s1
dPmn
sKf
-From WindGenerator Modelwt4g(pelec)
To wt4e(vsig)
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC
s2
1 + sTf
Type 4: Variable Speed WTG Asynchronous Type 4: Variable Speed WTG Asynchronous generators with full converter interfacegenerators with full converter interfacegenerators with full converter interfacegenerators with full converter interface
Terminal Voltage Real Power
Reactive Power Frequency
NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC