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The Diesel Generator is composed of a round rotor synchronous machine, a grid connection transformer, a speed governor, a synchronism relay and the excitation and load control.
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Generator
Governor
Excitation System (IEEE-DC1A)
Controllers
Exciter and Rectifier
Initial Values
Load ControllerTransformer
Synchronism check
Generator Tab
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Name | Unit | Description |
|---|---|---|
Proportional and integral gains | - | PI controller gains for load control reactive power function |
Output initial values and limits | pu | Initial condition for the output of the controller, and maximum-minimum limits |
Transformer Tab
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Name
Unit
Description
Winding connection on the high side voltage of the transformer
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Possible connection types for the high voltage windings of the transformer (Y/Yn/Yg/delta (lag or lead) )
Winding connection on the low side voltage of the transformer
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Possible connection types for the low voltage windings of the transformer (Y/Yn/Yg/delta (lag or lead) )
Transformer core type
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Possible core types for the transformer (three-single phase transformers/core-type/shell-type)
Simulate saturation
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check box to indicate if the saturation of the transformer will be taken into account
Transformer parameter units
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Choose between SI or per unit (pu) values
Nominal power
VA
Parameters of the high voltage side of the transformer
V, ohms or pu, H or pu
Rated voltage of the high voltage winding, resistance and inductance of the winding
Parameters of the low voltage side of the transformer
V, ohms or pu, H or pu
Rated voltage of the low voltage winding, resistance and inductance of the winding
Magnetizing resistance of the transformer
ohms or pu
Parallel resistance of the magnetization branch of the transformer
Magnetizing inductance of the transformer
H or pu
Parallel inductance of the magnetization branch of the transformer
Zero-sequence inductance L0 flux path return
H or pu
Zero-sequence inductance for the three-limb core transformer
Saturation curve
A, V.s
Excitation current and flux linkages values of the curve
Synchronism check Tab
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Name | Unit | Description |
|---|---|---|
Enable | - | Enable/disable the relay operation |
Data voltage threshold | % | Threshold limit for the voltage |
Delta angle and frequency threshold | degrees, Hz | Threshold limit for the angle and the frequency |
Breaker Close time | s | Breaker Closing time |
Freezing time | s | The initial time during which the breaker will remain zero i.e. the breaker will be open |
Voltage check | - | Voltage check functionality enable/disable |
Vmin | % of Vll | Threshold voltage below which Bus/Line considered to be dead/non-energized |
Vmax | % of Vll | Threshold voltage above which Bus/Line considered to be live/energized |
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Name | Unit | Description |
|---|---|---|
P ref | pu | Active power reference |
Q ref | pu | Reactive power reference |
V ref | pu | Voltage reference |
w ref | pu | Speed reference |
status | - | 0 = Disconnected from the grid or 1 = Connected to the grid |
Islanded | - | 0 = Disabled or 1 = Enabled |
V line | Phase-ground voltages (a,b,c) measured on the high voltage side of the transformer located after the breaker of the model | |
I line | Phase currents (a,b,c) measured on the high voltage side of the transformer located after the breaker of the model | |
V breaker | Phase-ground voltages (a,b,c) measured on the low voltage side of the transformer located after the breaker of the model |
Outputs
Name | Unit | Description |
|---|---|---|
Measurements | kW, kVAr, kV, A, pu | In this port there are 5 signals to monitoring the operation of the block: 1)Power delivered by the diesel generator 2)Reactive power delivered by the diesel generator 3)Voltage RMS at the terminal of the diesel generator 4)Current RMS delivered at the terminal of the diesel generator 5)Reserve reactive power of the diesel generator |
A | - | Connection port to phase A of the grid |
B | - | Connection port to phase B of the grid |
C | - | Connection port to phase C of the grid |
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