Simulator 16 User Guide - PowerWorld

Branch Options: Parameters
The Parameters tab of the Branch Options dialog displays the common parameters required for
defining a transmission branch.
Status
Current status of the device. Either Openor Closed.
Length
If the length of the line is known, it can be entered here in miles for informational purposes.
Per Unit Impedance Parameters
The series resistance and reactance (R and X), the total charging susceptance (that is, B, not B/2)
and the shunt conductance (G) of the device (in per unit). In the case of transformers, the
magnetizing conductance and susceptance can also be specified.
Line Shunts
Click this button to view the Line Shunt Dialog. This dialog is used to only view or modify the values
of the line shunts. Line shunts are expressed in terms of the per-unit conductance and susceptance
at each end of the line or transformer. If the line has shunts, the check box Has Line Shunts is
checked.
MVA Limits
Ratings for the transmission line or transformer in MVA. Eight different limits are allowed.
Calculate Impedances
This will display a pop-up menu with the following two options:
…From Per Distance Impedances
Clicking this item will open the Line Per Unit Impedance Calculator dialog, which can be used to
convert actual impedance and current limits to per unit impedance and MVA limits, and vice
versa.
…From Conductor Type and Tower Configuration
Clicking this item will open the Transmission Line Parameter Calculator dialog, which can be used
to compute per unit impedance values, based on a conductor type and a tower configuration.
Convert Line to Transformer
Clicking this button turns the currently selected transmission line into a transformer, making the
transformer specific fields available.
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