The Reset Transformer Taps command in the Main Window automatically resets the tap kVs of all the 2- and 3-winding transformers to 1.0 per-unit voltage. It also resets the center position of all LTCs to 1.0 per-unit voltage.
Resetting the tap kVs is useful for comparing the fault currents of OneLiner to those from another short-circuit program that assumes nominal transformer taps. The reset-LTC feature has no effect on short-circuit solutions. It is intended for power flow users.
TO RESET ALL TRANSFORMER TAPS AND LTCS’ CENTER KV TO NOMINAL:
1. Select the Network | Reset Transformer Taps command.
A dialog box will appear.
Mark the first check box to reset the tap kVs of all 2- and 3-winding transformer to the nominal kV of the respective terminals.
Mark the second check box to reset the center position of all LTCs on 2- and 3-winding transformers to the nominal kV of the tap-side bus.
Note: In the event that the nominal kV is not within the LTC’s range of tap positions, the program will set the center position to the midpoint between the maximum and minimum positions. Whenever possible, the program will limit the center position to the range of [0.95, 1.05] per-unit.
Press OK.
Main Window
NETWORK MENU