Communication architecture overview

 IED Level

• Each Bay represents part of Process Bus as HSR ring with embedded RedBox in two PDs connected to Lan-A and

    Lan-B.

• PRP is also available.

BAY Level

• Process bus - PRP topology, Protection and Control devices (PDs & BCUs) exchanging information with MUs & I/Os via IEC61850-9.2LE / IEC61850-GOOSE (process bus) and with Station Level (Station bus)

STATION Level

• Station bus - PRP topology, via IEC61850-MMS and GOOSE between IED and SAS Workstations