Patent ID: 8886476

Claim:
A system comprising: a plurality of generator substations each of which has an associated power generator, and comprises a transformer unit, a circuit breaker comprising a first end and a second end, the first end configured to connect to a multi-terminal transmission line and the second end configured to connect to a transformer unit, a protection relay, at least one synchrophasor measurement unit configured to make measurements on an output side of a circuit breaker, one or more local area network devices configured to enable local area network communication in the substation and one or more wide area network devices configured to enable communications between substations over a wide area network; the one or more local area network devices and the one or more wide area network devices at each generator substation being configured to route a multicast stream carrying synchrophasor measurement data from one or more of the synchrophasor measurement units at the generator substation across the wide area network to a protection relay at one or more of the other generator substations.