See Also
During Consolidation, the devices connected to the buses of a superbus change their connection pointers to point to the Primary Bus. In this manner, all the devices appear to be connected to primary buses only.
By default, the selection of the primary bus takes place using the following priority scheme, in descending order of priority:
- Slack bus (highest priority)
- Multi-Terminal DC Line Terminals
- Generator Regulated Bus
- Switched Shunt Regulated Bus
- LTC Regulated Bus
- DC Line Terminal
- Generator Terminal
- Switched Shunt Terminal
- Load Terminal
- Branch with Device Type = Series Capacitor
- Branch with Device Type = Transformer
- Branch with Device Type = Line
- Branch with Device Type = ZBR
- Branch with Device Type = Breaker
- Branch with Device Type = Load Break Disconnect
- Branch with Device Type = Disconnect
- Branch with Device Type = Fuse
- Branch with Device Type = Ground Disconnect
In case of ties, the minimum bus number is selected as the primary bus.
There is also an optional integer field available with each bus called Topology\Node Priority. When this is specified for a bus, the bus with the highest Node Priority is chosen as the primary node. By default this Node Priority is 0 for all buses, and thus the priority defaults to the scheme specified above.
A dead bus is consolidated to its neighbors if all three of the following conditions are met:
- It has no gens, loads, or shunts
- It is connected to the rest of the system only by open AC branches
- It is only connected to ONE other SuperBus through these AC branches
The objective here is to consolidate a disconnect and dead auxiliary bus.