Generator Models
Round Rotor Generator
The round rotor generator necessitates the following parameters:
|
Parameter |
Units |
Description |
|---|---|---|
|
Rated MVA |
MVA |
|
|
Rated Efficiency |
Percent |
|
|
Rated Speed |
RPM |
|
|
Rated Voltage |
Volts LL |
|
|
Rated Current |
Amps |
|
|
Rated PF |
|
|
|
Ra |
pu |
Armature Resistance |
|
Xd |
pu |
D-Axis Synchronous Reactance |
|
Xq |
pu |
Q-Axis Synchronous Reactance |
|
X’d |
pu |
D-Axis Transient Reactance |
|
X’q |
pu |
Q-Axis Transient Reactance |
|
X’’d = X’’q |
pu |
D & Q-Axis Sub-Transient Reactance |
|
Xl |
pu |
Stator Leakage Reactance |
|
T’do |
Seconds |
D-Axis Transient OC Time Constant |
|
T’qo |
Seconds |
Q-Axis Transient OC Time Constant |
|
T’’do |
Seconds |
D-Axis Sub-Transient OC Time Constant |
|
T’’qo |
Seconds |
Q-Axis Sub-Transient OC Time Constant |
|
E1 |
pu |
First Voltage to Define Saturation |
|
E2 |
pu |
Second Voltage to Define Saturation |
|
S( E1 ) |
pu |
Saturation at E1 |
|
S( E2 ) |
pu |
Saturation at E2 |
|
H |
kW-Sec / kVA |
Combined machine and prime mover inertia |
|
D |
pu |
Machine damping, normally = 0 |
Note: OC = Open Circuit.
These are standard machine quantities, and are based upon a sub-transient level detail flux model. All machine data shown above is mandatory for modeling the round rotor generator properly.
Salient Pole Generator
The salient pole generator necessitates the following parameters:
|
Parameter |
Units |
Description |
|---|---|---|
|
Rated MVA |
MVA |
|
|
Rated Eff |
Percent |
|
|
Rated Speed |
RPM |
|
|
Rated Voltage |
Volts LL |
|
|
Rated Current |
Amps |
|
|
Rated PF |
|
|
|
Ra |
pu |
Armature Resistance |
|
Xd |
pu |
D-Axis Synchronous Reactance |
|
Xq |
pu |
Q-Axis Synchronous Reactance |
|
X’d |
pu |
D-Axis Transient Reactance |
|
X’’d |
pu |
D-Axis Sub-Transient Reactance |
|
Xl |
pu |
Stator Leakage Reactance |
|
T’do |
Seconds |
D-Axis Transient OC Time Constant |
|
T’’do |
Seconds |
D-Axis Sub-Transient OC Time Constant |
|
T’’qo |
Seconds |
Q-Axis Sub-Transient OC Time Constant |
|
E1 |
pu |
First Voltage to Define Saturation |
|
E2 |
pu |
Second Voltage to Define Saturation |
|
S( E1 ) |
pu |
Saturation at E1 |
|
S( E2 ) |
pu |
Saturation at E2 |
|
H |
kW-Sec / kVA |
Combined machine and prime mover inertia |
|
D |
pu |
Machine damping, normally = 0 |
Note: OC = Open Circuit.
Again, these are standard machine quantities, and are based upon a sub-transient level detail flux model. All machine data shown above is mandatory for modeling the salient pole generator properly.
