SR3 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE 4-1
SR3 Series Protective Relay Platform
Chapter 4: 3 Series IEC61850 GOOSE
GE
Grid Solutions
3 Series IEC61850 GOOSE
3 Series relays support the IEC61850 GOOSE messaging service. This service allows 3
Series relay
units to exchange digital and analog information with other relays supporting
the same service. This information exchange is at speeds suitable for protection.
One example of how this communication service can be used within a protection scheme,
is to have it provide the communications link for a blocking scheme to protect a bus, as
shown in the above figure. In this example, if there is a fault on one of the feeders, say,
feeder A, both the instantaneous overcurrent element of the 350 feeder A and the
instantaneous overcurrent element of the 345 will pick up. The 345’s protection has been
coordinated with the downstream feeders such that if the 345 does not receive a GOOSE
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