Phasor Measurement Unit - GE L30 Instruction Manual

5 SETTINGS
a) MAIN MENU

PATH: SETTINGS SYSTEM SETUP
 PHASOR MEASUREMENT
 UNIT
The L30 Line Current Differential System is provided with an optional phasor measurement unit feature.
This feature is specified as a software option at the time of ordering. The number of phasor measurement
units available is also dependent on this option. See the Ordering section of chapter 2 for details.
UR Synchrophasor Implementation
are used within protection relays. If these phasors are referenced to a common time base they are referred to as
PHASORS
a . A vastly improved method for tracking power system dynamic phenomena for improved power system
SYNCHROPHASOR
monitoring, protection, operation, and control can be realized if Synchrophasors from different locations within the power
system are networked to a central location. The figure shows complete Synchrophasor implementation for Firmware ver-
sion 6.0.
Figure 5–31: COMPLETE SYNCHROPHASOR IMPLEMENTATION
The specifics of implementation by model number is summarized in the table below.
Table 5–6: IMPLEMENTATION BY MODEL NUMBER
MODEL NUMBER OF
PMUS
N60 4
D60, F60, G60, L30, 1
L90, T60
Depending on the applied filter, the Synchrophasors that are produced are classified as either P (protection) or M (meter-
ing) class Synchrophasors as described in the latest C37.118 standard. Sychrophasors available within the UR that have
no filtering applied are classified as NONE. Depending on the model number, the UR can support up to a maximum of three
DSP's. The four PMUs within the UR can be configured to read the sychrophasors from any of the six sources at a user
programmable rate. When one source is selected by one PMU it cannot be used in other PMUs. In firmware version 6.0 a
maximum of two aggregators allow the user to aggregate selected PMUs as per IEC 37.118 to form a custom data set that
is sent to a client optimizing bandwidth. As with sources, a given aggregator can aggregate data form PMUs with the same
rate. With firmware 6.0 a maximum of two PMUs can be set to a reporting rate of 120 Hz for a 60 Hz system (or 100Hz for
a 50 Hz system) and each aggregator can be configured to support a TCP or a UDP connection to a client allowing the UR
to support a total of two TCP connections or two UDP connections or a combination of a TCP and a UDP connection per
aggregator for real-time data reporting. Also note that if hard fiber is used it will have no impact on this specification.
GE Multilin


PHASOR MEASUREMENT UNIT

 PHASOR MEASUREMENT
 UNIT 1
NUMBER OF NUMBER OF ANALOG
AGGREGATORS INPUTS
2 16
1 16
L30 Line Current Differential System
5.4 SYSTEM SETUP
5.4.8 PHASOR MEASUREMENT UNIT
See below.
COMMENT
1, 2, or 4 PMUs can be used
5
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