Branch Options: Parameters

See Also

 

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.

D-FACTS Devices on the Line

Click this button to view the D-FACTS Information dialog. This dialog is used to create or modify D-FACTS devices on the line.