This component models a 1-phase AC or DC voltage source, where source impedance may be specified as ideal (i.e. infinite bus).
This source uses the same algorithm as the Three-Phase Voltage Source Model 2, and may be controlled through either fixed, internal parameters or variable external signals.
V: Line-to-Ground, Peak Voltage Magnitude [kV]
f: Frequency [Hz]
You can connect a slider to these external inputs for a convenient runtime manual adjustment, or use a control system output for dynamic adjustment.
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More: |
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Source Name |
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Text |
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Just an identifier. A name should be entered here to avoid compilation warnings |
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Source Impedance |
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Choice |
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Select the source impedance type as described in Impedance Data Entry |
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Is the Star Point Grounded? |
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Choice |
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Select Yes to automatically ground the source |
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Specified Parameters |
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Choice |
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Select Behind Source Impedance or At the Terminal. The 'At the Terminal' option should be selected if the steady-state load flow terminal data is known (i.e. V, P and Q). 'Behind Source Impedance' should be selected if only E, q are known. See Data Format for Internal Control for more details. |
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Input Method |
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Radio Buttons |
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Select Internal or External source control. If internal is selected, magnitude and frequency remain constant and are defined by Mag and Frequency |
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Source Type |
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Radio Buttons |
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Select AC or DC source |
Signal ParametersSignal Parameters
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Mag (AC:L-G, RMS DC:Pk) |
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REAL |
Constant |
Source or terminal voltage magnitude [kV]. This input may represent either the source or the terminal voltage magnitude depending on the Specified Parameters parameter input. See Data Format for Internal Control for more details. |
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Ramp Up Time |
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REAL |
Constant |
Time for the source to ramp up to 1.0 pu Use a minimum ramp up time of 3 times the fundamental frequency period (i.e. 0.05 s for 60Hz and 0.06 s for 50Hz) in most cases to reduce start-up transients [s] |
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Initial Phase |
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REAL |
Constant |
Source or terminal voltage phase shift [°]. This input may represent either the source or the terminal voltage phase angle depending on the Specified Parameters parameter input. See Data Format for Internal Control for more details. |
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Frequency |
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REAL |
Constant |
Source frequency [Hz]. This input is enabled only if Source Type | AC and Input Method | Internal is selected |
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Terminal Real Power |
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REAL |
Constant |
Enter the real power P flowing at the terminal [MW]. This input is enabled only if Specified Parameters | At the Terminal is selected. See Data Format for Internal Control for more details. |
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Terminal Reactive Power |
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REAL |
Constant |
Enter the reactive power Q flowing at the terminal [MVAR]. This input is enabled only if Specified Parameters | At the Terminal is selected. See Data Format for Internal Control for more details. |
NOTE: This parameter is used only if Source Impedance | Resistive is selected.
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Resistance |
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REAL |
Constant |
Source resistance [W] |
Impedance R-R//LImpedance R-R//L
NOTE: These parameters are used only if Source Impedance | R-R//L is selected.
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Resistance (Series) |
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REAL |
Constant |
Series source resistance [W] |
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Resistance (Parallel) |
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REAL |
Constant |
Parallel source resistance [W] |
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Inductance (Parallel) |
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REAL |
Constant |
Parallel source inductance [H] |
Impedance R-L-CImpedance R-L-C
NOTE: These parameters are used only if Source Impedance | R-L-C is selected.
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Resistance |
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REAL |
Constant |
Source resistance [W] |
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Inductance |
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REAL |
Constant |
Source inductance [H] |
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Capacitance |
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REAL |
Constant |
Source capacitance [mF] |
NOTE: This parameter is used only if Source Impedance | Inductive is selected.
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Inductance |
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REAL |
Constant |
Source inductance [H] |
NOTE: This parameter is used only if Source Impedance | Capacitive is selected.
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Capacitance |
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REAL |
Constant |
Source capacitance [mF] |
NOTE: If no name is specified, this output signal will not be monitored.
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Name for Source Current |
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REAL |
Output |
Name for the source current [kA] |