Simulator 16 User Guide - PowerWorld

Transformer Impedance Correction Table Display
The Transformer Impedance Correction Display shows information about all the transformer
impedance correction tables in the case. The Transformer Impedance Correction Display is used to
model the change in the impedance of the transformer as the off-nominal turns ratio or phase shift
angle is varied.
The Correction Display is a class of Case Information Display and therefore can be used in a manner
consistent with all other case information displays. It has a local menu from which you can print, copy,
and modify its information as well as view the information dialog of its associated correction tables.
When in Edit Mode, you can define new tables using the Insert option, or delete existing tables using
Delete. You can also sort the transformer impedance correction information by clicking on the heading
of the field by which you want to sort.
To show this display select Network > Impedance Correction Tables from the Model Explorer.
The display contains the following fields by default:
Table #, Table Name
Shows the table number and name for the record. Table number must be between 1 and 64.
Transformer Impedance Scaling Factors
The rest of the default columns show the actual fields in the table. The first field of each pair shows
the off-nominal turns ratio or phase shift angle, while the second field shows the associated scaling
factor for the transformer’s impedance.
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