Simulator 16 User Guide - PowerWorld

Integrated Topology Processing: Consolidation
Consolidation consists in moving the connection pointers of all the devices within a Superbus to a
specially selected bus called the Primary Bus, and hiding not needed switching devices and buses. The
Primary Bus is selected based on a default Primary Bus Priority Scheme.
Prior to consolidation, all the power system devices in a superbus, such as generators, loads, shunts
and transmission line terminals are connected to their actual terminal buses in the physical system.
After consolidation all the devices are connected to their corresponding Primary Bus. This makes the
status and actually, the presence of switching devices in a superbus irrelevant, allowing the application
to disregard them during the numerical solutions. A list of the branch device types that are allowed to
be consolidated and exceptions to when these branch device types are not consolidated can be found
in the Full-Topology Model topic. We say that the full-topology model is in a consolidated state and we
call the representation of the system after consolidation, the Consolidated Representation.
After consolidation, the topology of the full-topology model is identical to that of an equivalent
planning case and the models are electrically identical. However, in Simulator no case conversion takes
place. Only the full-topology model exists in memory.
The following link contains an example illustrating the consolidation process: Illustration of Process.
The user is never allowed to interact with the model while it is in a consolidated state.
The user does not have access to the Consolidated Representation unless it is saved as a planning
case as described in the section Saving the Planning Case.
©2011 PowerWorld Corporation
1492