The role of ASCGAPC is to model the system primary circuit

connection state to involve the correct generators for the

synchronization of a non-generator breaker and to interact

between the ASGCSYN and ASNSCSYN function blocks. The

information exchange between ASCGAPC, ASGCSYN and

ASNSCSYN is carried out via binary and analog GOOSE

signalling as per IEC 61850-8-1. The LHMI dedicated to the

relay (breaker) works as the local user interface for a non

generator breaker synchronizing. The available synchronizing

modes are “automatic” and “semi-automatic”. A manual

synchronization of the non-generator breaker can be carried

out as a back-up solution in situations where the

communication system (IEC 61850-8-1) is not available. This

requires operator actions from two LHMIs, namely from the

LHMI of the concerned non-generator breaker and the LHMI of

the manually selected generator relay.