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General Electric – 2.5 MW Series

GE’s 2.5 MW series is represented by three-blade, upwind, horizontal axis wind turbines with a rated capacity of 2.5-megawatts.

The rotor on a GE 2.5 MW turbine is designed to operate in an upwind configuration at 5 to 14 revolutions per minute (rpm). Rotor speed is regulated by a combination of blade pitch angle adjustment and generator/converter torque control. The 2.5 MW series provides the option of a selectable power factor between 0.90 (overexcited) and 0.90 (underexcited) and also a VAR boost, which will override watts production to deliver more VARs during emergency under-voltage conditions.

General Electric – 2.5 MW Series
Power Regulation Active blade pitch control
Operating Data
Rated Power 2500 KW [1]
Cut-in wind speed 3m/s (9 mph)
Cut-out wind speed 25 m/s (55 mph)
Wind Class IEC TC III+; IEC TC IIA; IEC TC IIB; IEC TC Ib
Rotor
Rotor diameter 100 m (328 ft) and 103 m (338 ft).
Operational interval 5 – 14 rpm
Towers
Type Tubular steel tower
Hub heights 85 m (279 ft)
Generator
Type Permanent magnet generator
Nominal output 1,500 kW
Operational data 690 V (50 Hz/60 Hz)
Gearbox
Type Three-step planetary/helical gear system with a ratio of gear 1:72 (60 HZ)

Contents

  • 1 Vendor Specific Model Characterization
    • 1.1 Model Performance: Case 1 – Fault Event
    • 1.2 Model Performance: Case 2 – Under-Frequency Event
    • 1.3 Model Performance: Case 3 – Over-Frequency Event
  • 2 Parameterization – PSLF Environment
    • 2.1 Parameterization: Case 1 – Fault Event
    • 2.2 Parameterization: Case 2 – Under-Frequency Event
    • 2.3 Parameterization: Case 3 – Over-Frequency Event
  • 3 Parameterization – PSSE Environment
    • 3.1 Parameterization: Case 1 – Fault Event
    • 3.2 Parameterization: Case 2 – Under-Frequency Event
    • 3.3 Parameterization: Case 3 – Over-Frequency Event
  • 4 Results Validation
  • 5 Vendor Specific Model Validation
  • 6 References

Vendor Specific Model Characterization

Model Performance: Case 1 – Fault Event

In this case a remote fault is applied to bus 12 for a duration of 6 cycles (0.1 sec)

GE-2.5 MW – Case 1 and SCR=5

GE-2.5 MW – Case 1 and SCR=10

Model Performance: Case 2 – Under-Frequency Event

In this case a under frequency event is created by tripping the 100 MVA generation unit at bus 20

GE-2.5 MW – Case 2 and SCR=5

GE-2.5 MW – Case 2 and SCR=10

Model Performance: Case 3 – Over-Frequency Event

In this case a under frequency event is created by tripping the 100 MVA load at bus 11

GE-2.5 MW – Case 3 and SCR=5

GE-2.5 MW – Case 3 and SCR=10

Parameterization – PSLF Environment

The parameter values shown in the table resulted from a compromise between the simulated cases (i.e. SCR 5 and SCR 10) and network conditions (i.e. fault, under- and over frequency)

PSLF parameter values
wt4g wt4t wt4e
Lvplsw 1.0 Tpw 0.05 Varflg 1
Rrpwr 10.0 Kpp 0.08 Kqi 0.1
Brkpt 0.9 Kip 0.10 Kvi 0.001
Zerox 0.4 Tf 0.08 Vmax 1.1
Lvpll 1.22 Kf 0.00 Vmin 0.9
Volim 1.2 dPmx 0.1 Qmax 0.4
Lvpnt1 0.8 dPmn -0.1 Qmin -0.4
Lvpnt0 0.4 Tr 0.02
Tc 0.15
Kpv 18.0
Kiv 5.0
Pfaflg 0
fn 1.0
Tv 0.05
Tpwr 0.05
Iphl 1.24
Iqhl 1.25
Pqflag 0
There are three generic wind turbine models in PSLF for a type 4 wind turbine (WT4). These models are wt4g, wt4t, and wt4e. The wt4g model includes the generator and converters dynamics. The wt4t model includes the wind aerodynamic model and the wind turbine model. Finally, the wt4e model contains the real and reactive control models. The values for the parameters resulted from a compromise between the two cases (SCR 5 and SCR 10). The set of parameters had to be tuned to satisfactory match the results of dynamic simulation for the VSM and the generic WT4 model for both SCR cases.

Parameterization: Case 1 – Fault Event

Parameterization of WT4 vs GE-2.5 MW – Case 1 and SCR=5

Parameterization of WT4 vs GE-2.5 MW – Case 1 and SCR=10

Parameterization: Case 2 – Under-Frequency Event

Parameterization of WT4 vs GE-2.5 MW – Case 2 and SCR=5

Parameterization of WT4 vs GE-2.5 MW – Case 2 and SCR=10

Parameterization: Case 3 – Over-Frequency Event

Parameterization of WT4 vs GE-2.5 MW – Case 3 and SCR=5

Parameterization of WT4 vs GE-2.5 MW – Case 3 and SCR=10

Parameterization – PSSE Environment

The parameter values shown in the table resulted from a compromise between the simulated cases (i.e. SCR 5 and SCR 10) and network conditions (i.e. fault, under- and over frequency)

PSSE parameter values
wt4g wt4t
Tiqcmd 0.2 Tfv 0.150
Tipcmd 0.02 Kpv 18.00
VLVPL1 0.087537 Kiv 5.00
VLVPL2 0.898853 Kpp 0.30
GLVPL 1.111951 Kip 0.10
VHVRCR 1.12 Kf 0.00
CURHVRCR 2.00 Tf 0.08
Rip_LVPL 10.0 Qmx 0.40
T_LVPL 0.02 Qmn -0.40
IPmax 1.12
Trv 0.02
Trv 0.02
dPMX 0.50
dPMN -0.5
T_Power 5.00
Kqi 0.10
VMINCL 0.90
VMAXCL 1.10
Kvi 120.0
Tv 0.05
Tp 0.05
ImaxTD 1.19
Iph1 1.220
Iqh1 0.830
PFAFLG 0
VARFLG 1
PQFLAG 1
There are four generic wind turbine models in PSSE for a type 4 wind turbine (WT4). These models are WT4G1 and WT4E1. The WT4G1 model includes the generator and converters dynamics. The WT4E1 model contains the electrical control model for the type 4 wind generator. The values for the parameters resulted from a compromise between the two cases (SCR 5 and SCR 10). The set of parameters had to be tuned to satisfactory match the results of dynamic simulation for the VSM and the generic WT4 model for both SCR cases.

Parameterization: Case 1 – Fault Event

Parameterization of WT4 vs GE-2.5 MW – Case 1 and SCR=5

Parameterization of WT4 vs GE-2.5 MW – Case 1 and SCR=10

Parameterization: Case 2 – Under-Frequency Event

Parameterization of WT4 vs GE-2.5 MW – Case 2 and SCR=5

Parameterization of WT4 vs GE-2.5 MW – Case 2 and SCR=10

Parameterization: Case 3 – Over-Frequency Event

Parameterization of WT4 vs GE-2.5 MW – Case 3 and SCR=5

Parameterization of WT4 vs GE-2.5 MW – Case 3 and SCR=10

Results Validation

In all figures, the response of the generic model matches the response of the VSM in the frequency range of interest. Thus, both the PSLF and the PSSE models are an appropriate representation of the GE 2.5 MW WTG’s behavior for fundamental frequency analysis.

Vendor Specific Model Validation

No data available

References

  1. ↑ GE 2.5 MW

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