Simulator 16 User Guide - PowerWorld

Split Bus Dialog
The Split Bus dialog contains two sections labeled Existing Bus and New Bus. These sections enable
you to designate the bus you want to split and the name and number of the new bus created by the
bus split operation. If you opened the Split Bus Dialog from either the Bus Case Information Display or
an oneline diagram, the Existing Bus Name and Number fields will be read-only and will identify the
bus you selected. However, if you opened the Split Bus Dialog from the Modify Case Menu on the
Edit Mode ribbon group on the Tools ribbon tab, you will first have to choose a bus to split. In this
case, use the Find… speed button located next to the Existing Bus label to select the bus to split, or
simply type its number in the Existing Bus Number field. Then, provide the name and number for the
new bus to create using the New Bus Name and Name fields. The number you specify in the New Bus
Number field must be unique; it cannot be a number that identifies another bus in the case. If you do
specify an existing number, Simulator will issue an error message and require you to specify a
different number. If you choose not to specify a name for the new bus, Simulator will set the name of
the new bus to be the same as the bus’s number.
Once you have identified the bus to split and the name and number for the new bus resulting from the
split, you may then specify whether a bus tie should be inserted between the existing bus and the
soon-to-be-created new bus. By checking the Insert bus tie between existing and new buses
checkbox, you command Simulator to place a very low-impedance bus tie between the bus to split and
its offspring. The new branch will have an impedance of 0.0000 + j0.0001 ohms. If the bus tie should
be inserted as an open branch, check the Normally open checkbox. This option becomes available,
of course, only if you elect to have Simulator automatically add the new bus tie.
After you have finished making your selections, click OK. Simulator will create the new bus, assign its
electrical attributes to match those of the existing bus, and add the bus to the power system model. If
a oneline diagram is currently active and the existing bus is represented on it, Simulator will add a
symbol for the new bus to the diagram, placing it immediately to the right of the existing bus’s symbol.
If you elected to create a bus tie between the existing and new buses, Simulator will also add a
symbol for the bus tie to the diagram.
Finally, Simulator will automatically open the Equipment Mover Dialog to help you manage the transfer
of equipment from the existing bus to the new bus.
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