See Also
Two or more buses can be merged to a new bus in Edit Mode with the loads, generators, and shunts of the buses merged moved to the new bus. The transmission lines among the buses merged will be deleted while the transmission lines connecting the merged buses and buses which are not selected to merge will be moved to the new bus.
To join two or more buses together using the oneline display, select at least two power system elements (at least one of them being a bus), then right click on one of the selected elements to invoke the popup menu and select Merge selected buses. In the Bus Merging Dialog, specify the buses to merge further if needed by clicking Add and/or Delete button. To add buses to merge, click Add and select all the needed buses in the Choose a Bus dialog and click OK. To delete from already selected buses, select the buses to delete and click the Delete button.
Once you have the elements to merge selected, enter the number, name, nominal voltage, zone number, area number and substation number for the new bus. These properties can be set to be the same as one of buses to merge by selecting it in the Specify buses to merge box and pressing the Set new bus properties same as selected bus.
Buses can also be merged in the Bus Case Information Display. To do so, select a cell and right click to popup the local menu. Select Merge selected buses. The buses to merge and the properties of the new bus can be edited in the Bus Merging Dialog.
When buses are merged from the oneline diagram, the selected buses will be joined in both the PWB case and the oneline. When buses are merged from the bus grid, the selected buses will be joined only in the PWB case but not in the oneline. This might result in bus objects not connected to bus records in the oneline.
NOTE:Special consideration is taken when merging buses that are part of a multi-section line. If a) all buses are part of a multi-section line, b) all buses are contiguous within the multi-section line definition (all connected in series), c) include at most only one of the two multi-section line's terminal buses, and d) the resulting merge would leave at least two remaining sections of the multi-section line, then the multi-section line record will remain defined and be modified to reflect the changes incurred by merging buses and removing line sections within the record. If ANY of the above criteria are NOT met when one or more buses within a multi-section line grouping are being merged, the merge will be performed but the multi-section line record will be removed. The actual system devices will remain (in their post-merged state) but there will no longer be a multi-section line record grouping any of the devices for multi-section line reporting.