GE N60 Instruction Manual page 222

5.4 SYSTEM SETUP 5 SETTINGS
The N60 offers PMU features over two communication standards, IEC61850-9-5 and IEEE C37.118. The figure shows
complete Synchrophasor implementation.
Figure 5–30: COMPLETE SYNCHROPHASOR IMPLEMENTATION
UR Implementation of IEC61850-90-5
5
Synchrophasor data as measured and calculated by phasor measurement units (PMUs) is very useful to assess the condi-
tion of the electrical power network. The IEEE C37.118 standards define synchrophasors and related message formats to
transmit synchrophasor data. Synchrophasor streaming via IEEE C37.118 has proven to work but the desire to have a
communication mechanism that is compliant with the concept of IEC 61850 has led to the development of IEC61850-90-5.
The IEC61850-90-5 standard defines the packet structure for multicast routing of streamed Sampled Value (SV) known as
R-SV.
Firmware versions 7.0 and above have a 90-5 based R-SV implementation equivalent in structure and configuration to that
of the existing C37.118 implementation of firmware version 6.0, that is, synchrophasor data at rates up to 60 Hz for meter-
ing and 120 Hz for protection class synchrophasors. The two figures below depict the general data flow for the generation
of synchrophasor data for IEC61850-90-5. In the first figure, when IEC61850-90-5 is selected all real and virtual sources
are available for the IEC61850-90-5 PMUs.
5-106 N60 Network Stability and Synchrophasor Measurement System GE Multilin