ABB TCC300, User Manual, Page: 441 / 716

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Figure 351: Single Bus Breaker/Control Network Map
Each control individually monitors the status of the Tie Breakers (A2, A3 Auxiliary
Inputs) connected to its section of the bus, and broadcasts to all the other controls these
statuses via a GOOSE message. Each control in turn processes the tie breaker statuses
from the other controls to produce a map of the network every 64 ms.
Each control upon detecting a change in any Breaker Status will issue a GOOSE message
to update all the other controls in the network with the new information.
The following rules are applied to produce the Control Network Map:
• The Initiator in the initial setup of the network should always be at the highest
position in the network map (e.g. Position 8).
• The paralleling address of each control should be the same as the position it is located
in the network map (e.g. Position 7 = Address 7).
• All GOOSE messages are sorted according to their corresponding paralleling
addresses.
• The control scans all the tie breakers statuses (if any) in the downstream positions to
find the downstream boundary.
• The first OPEN status indicates the boundary has been reached. Similarly the control
scans all the upstream tie breaker statuses (if any) to find the upstream boundary.
Once the boundaries are located the sub network is defined.
• In each sub network the control with the highest paralleling address becomes the
Initiator.
• If the control is a Initiator, the control will determine how many Non-Initiators are in
its network.
• The Initiator then starts the paralleling calculations in the controls in its network (or
sub network).
1VAC388793-MB A
Section 6
Configuration
TCC300 435
User Manual