Schweitzer Engineering Laboratories SEL-421-4 - C37.118 Synchrophasor Protocol

18.23
Date Code 20171006 Instruction Manual SEL-400 Series Relays
Synchrophasors
C37.118 Synchrophasor Protocol
C37.118 Synchrophasor Protocol
The relay complies with IEEE C37.118, Standard for Synchrophasor Measure-
ments for Power Systems, when Global setting MFRMT := C37.118. The proto-
col is available on Serial Ports 1, 2, 3, and F by setting the corresponding Port setting
PROTO := PMU. The protocol is available on the Ethernet port when EPMIP := Y.
This subsection does not cover the details of the protocol, but highlights some of
the important features and options that are available.
Settings Affect Message Contents
The relay allows several options for transmitting synchrophasor data. These are
controlled by Global settings described in Settings for Synchrophasors. You can
select how often to transmit the synchrophasor messages (MRATE), which syn-
chrophasors to transmit, which numeric representation to use, and which coordi-
nate system to use.
The relay automatically includes the frequency and rate-of-change-of-frequency
in the synchrophasor messages. Global setting FNRq selects the numeric format
to use for these two quantities.
The relay can include as many as sixteen user-programmable analog values in the
synchrophasor message and 0, 16, 32, 48, or 64 digital status values.
The relay always includes the results of four synchrophasor trigger reason
SEL
OGIC equations TREA1, TREA2, TREA3, and TREA4, and the trigger
SEL
OGIC control equation result PMTRIG, in the synchrophasor message.
FREQ (Hz) 59.990 Frequency Tracking = Y
Rate-of-change of FREQ (Hz/s) 0.00
Digitals
PSV08 PSV07 PSV06 PSV05 PSV04 PSV03 PSV02 PSV01
0 0 0 0 0 0 0 0
PSV16 PSV15 PSV14 PSV13 PSV12 PSV11 PSV10 PSV09
0 0 0 0 0 0 0 0
PSV24 PSV23 PSV22 PSV21 PSV20 PSV19 PSV18 PSV17
0 0 0 0 0 0 0 0
PSV32 PSV31 PSV30 PSV29 PSV28 PSV27 PSV26 PSV25
0 0 0 0 0 0 0 0
PSV40 PSV39 PSV38 PSV37 PSV36 PSV35 PSV34 PSV33
0 0 0 0 0 0 0 0
PSV48 PSV47 PSV46 PSV45 PSV44 PSV43 PSV42 PSV41
0 0 0 0 0 0 0 0
PSV56 PSV55 PSV54 PSV53 PSV52 PSV51 PSV50 PSV49
0 0 0 0 0 0 0 0
PSV64 PSV63 PSV62 PSV61 PSV60 PSV59 PSV58 PSV57
0 0 0 0 0 0 0 0
Analogs
PMV49 0.000 PMV50 0.000 PMV51 0.000 PMV52 0.000
PMV53 0.000 PMV54 0.000 PMV55 0.000 PMV56 0.000
PMV57 0.000 PMV58 0.000 PMV59 0.000 PMV60 0.000
PMV61 0.000 PMV62 0.000 PMV63 0.000 PMV64 0.000
=>>
Figure 18.6 Sample SEL-487E MET PM Command Response (Continued)