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Transformer Data Tab | Parameters GUI & Toolbox Icons

Owned by Sylvain Ménard
Last updated: Mar 16, 2023
2 min read

Parameters Tab

Toolbox Icons

Compute

Compute the transformer data, the results are shown in the Log Report.

Revert

Revert to default transformer data

Open

Load your transformer model *.htd (hypertransfo data file)

Save

Saves your transformer data in a new *.htd (hypertransfo data file) file that contains the information of the model

Description And Parameters

FrequencySpecify the frequency in hertz (Hz) to be used
Nominal powerSpecify the nominal power of the transformer in volt-amperes (VA)
CommentsUse this window to type any comments or details that you wish to save with the transformer parameters
UnitsIn the pull-down menu, select “SI” of “PU”
Zero sequence data availableCheckbox if the zero sequence data is available
  • Checkbox enabled: Z0 is different from Z1--Three-phase (3-leg 3-winding or 3-leg 2 windings) transformer modeled by n coupled windings.
  • Checkbox disabled: Z0 = Z1 (This model is not supported actually in HYPERSIM®) Three single-phase 3-winding (2-leg) transformers modeled each by 3 coupled windings.
Zero sequence X12 measured with winding 3 delta connectedCheckbox if the available zero-sequence short circuit tests measurement of winding 3 is connected in Delta.
Nominal voltagesSpecify the nominal voltages phase-to-phase of the winding to be used in the model in volts RMS
Winding resistancesSpecify the winding resistances

Excitation Data


Positive-sequence Zero-sequence
no-load excitation currentSpecify the no-load excitation current in percent (%) of nominal current when positive-sequence nominal voltage is applied at any group of winding terminals.Specify the no-load excitation current in percent (%) of nominal current when zero-sequence nominal voltage is applied at any group of winding terminals.
no-load LossesSpecify the no-load losses. The core losses and the winding losses at no-load in watts (W), when positive-sequence nominal voltage is applied at any group of winding terminals.Specify the no-load losses in watt. The core losses and the winding losses at no-load in watts (W), when zero-sequence nominal voltage is applied at any group of winding terminals.
short-circuit reactanceSpecify the short-circuit reactance (Xij) X12, X23 and X13, when the winding i and j is shortcircuited.Specify the short-circuit reactance (Xij) X12, X23 and X13, when the winding i and j is shortcircuited. If the Zero sequence X12 measured with winding 3 delta connected is not checked, X12 represents the short-circuit reactance when winding 3 is not connected in Delta.

Load Parameters

The Load Parameters button updates the transformer parameters in the General Tab of the parameter form. It can be verified by comparing the result obtained in the Log tab of the parameter form.


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