GE N60 Instruction Manual page 232

5.4 SYSTEM SETUP
The N60 offers PMU features over two communication standards, IEC 61850-9-5 and IEEE C37.118. The figure shows
complete Synchrophasor implementation.
5
UR Implementation of IEC 61850-90-5
Synchrophasor data as measured and calculated by phasor measurement units (PMUs) is used to assess the condition 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 communica-
tion mechanism that is compliant with the concept of IEC 61850 has led to the development of IEC 61850-90-5. The IEC
61850-90-5 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 IEEE C37.118 implementation of firmware version 6.0, that is, synchrophasor data at rates up to 60 Hz for
metering and 120 Hz for protection class synchrophasors. The following two figures depict the general data flow for the
generation of synchrophasor data for IEC 61850-90-5. In the first figure, when IEC 61850-90-5 is selected all real and vir-
tual sources are available for the IEC 61850-90-5 PMUs.
The number of PMUs and aggregators vary by product, as outlined in the table.
Table 5–12: IMPLEMENTATION BY MODEL NUMBER
MODEL
N60
C60
D60, F60, G60, L30,
L90, T60
5-114
Figure 5–31: COMPLETE SYNCHROPHASOR IMPLEMENTATION
NUMBER OF NUMBER OF
PMUS AGGREGATORS
6 4
2 2
1 1
N60 Network Stability and Synchrophasor Measurement System
NUMBER OF ANALOG COMMENT
INPUTS
16 1, 2, 4, or 6 PMUs can be used
16
16
5 SETTINGS
GE Multilin