Phasor Measurement Unit - GE L30 Instruction Manual

5 SETTINGS
a) MAIN MENU

PATH: SETTINGS SYSTEM SETUP
 PHASOR MEASUREMENT
 UNIT
MESSAGE
MESSAGE
The L30 is provided with an optional phasor measurement unit feature. This feature is specified as a soft-
ware option at the time of ordering. The number of phasor measurement units available can also depend
on this option. Using the order code for your device, see the order codes in chapter 2 for details.UR Syn-
chrophasor Implementation
are used within protection relays. If these phasors are referenced to a common time base they
PHASORS
are referred to as a
SYNCHROPHASOR
improved power system monitoring, protection, operation, and control can be realized if Synchrophasors from different
locations within the power system are networked to a central location.
The L30 offers PMU features over two communication standards, IEC 61850-9-5 and IEEE C37.118. The figure shows
complete Synchrophasor implementation.
Figure 5–37: COMPLETE SYNCHROPHASOR IMPLEMENTATION
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.
GE Multilin


PHASOR MEASUREMENT UNIT

 PHASOR MEASUREMENT
 UNIT 1
 AGGREGATOR
 UNIT 1
 IEC 90-5 MSVCB
 CONFIGURATION
. A vastly improved method for tracking power system dynamic phenomena for
L30 Line Current Differential System
5.4 SYSTEM SETUP
5.4.8 PHASOR MEASUREMENT UNIT
See below.
See page 5–133.
See page 5-135.
5
5-115