
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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| Source Name | 
 | Text | 
 | Just an identifier. A name should be entered here to avoid compilation warnings | 
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| Source Impedance | 
 | Choice | 
 | Select the source impedance type as described in Impedance Data Entry | 
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| Is the Star Point Grounded? | 
 | Choice | 
 | Select Yes to automatically ground the source | 
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| Specified Parameters | 
 | Choice | 
 | 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 | 
 | Radio Buttons | 
 | 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 | 
 | Radio Buttons | 
 | Select AC or DC source | 
Signal ParametersSignal Parameters
| Mag (AC:L-G, RMS DC:Pk) | 
 | 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 | 
 | 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 | 
 | 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 | 
 | 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 | 
 | 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 | 
 | 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.
| Resistance | 
 | 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.
| Resistance (Series) | 
 | REAL | Constant | Series source resistance [W] | 
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| Resistance (Parallel) | 
 | REAL | Constant | Parallel source resistance [W] | 
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| Inductance (Parallel) | 
 | 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.
| Resistance | 
 | REAL | Constant | Source resistance [W] | 
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| Inductance | 
 | REAL | Constant | Source inductance [H] | 
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| Capacitance | 
 | REAL | Constant | Source capacitance [mF] | 
NOTE: This parameter is used only if Source Impedance | Inductive is selected.
| Inductance | 
 | REAL | Constant | Source inductance [H] | 
NOTE: This parameter is used only if Source Impedance | Capacitive is selected.
| Capacitance | 
 | REAL | Constant | Source capacitance [mF] | 
NOTE: If no name is specified, this output signal will not be monitored.
| Name for Source Current | 
 | REAL | Output | Name for the source current [kA] |