R.7.10
SEL-421 Relay Reference Manual Date Code 20111215
Synchrophasors
Settings for Synchrophasors
Table 7.1 PMU Settings in the SEL-421 for C37.118 Protocol in Global Setting
Setting Description Default
EPMU Enable Synchronized Phasor Measurement (Y, N) N
a
a
Set EPMU := Y to access the remaining settings
MFRMT Message Format (C37.118, FM)
b
b
C37.118 = IEEE C37.118 Standard; FM := SEL Fast Message—see Ta bl e 7. 2 0.
C37.118
MRATE Messages per Second
{1, 2, 5, 10, 25, or 50 when NFREQ := 50}
{1, 2, 4, 5, 10, 12, 15, 20, 30, or 60 when
NFREQ := 60}
2
PMAPP PMU Application (F = Fast Response, N = Narrow
Bandwidth)
N
PHCOMP Frequency-Based Phasor Compensation
(Y, N)
Y
PMSTN Station Name (16 characters) STATION A
PMID PMU Hardware ID (1–65534) 1
PHDATAV Phasor Data Set, Voltages (V1, ALL, NA) V1
VCOMP Voltage Angle Compensation Factor
(–179.99 to 180 degrees)
0.00
PHDATAI Phasor Data Set, Currents (I1, ALL, NA) NA
PHCURR
c
c
Setting hidden when PHDATAI := NA
Current Source (IW, IX, BOTH, COMB) IW
IWCOMP IW Angle Compensation Factor
(–179.99 to 180 degrees)
0.00
IXCOMP IX Angle Compensation Factor
(–179.99 to 180 degrees)
0.00
PHNR
d
d
Setting hidden when PHDATAV := NA and PHDATAI := NA
Phasor Numeric Representation (I = Integer,
F = Floating point)
I
PHFMT
d
Phasor Format
(R = Rectangular coordinates, P = Polar coordinates)
R
FNR Frequency Numeric Representation (I = Integer,
F=Float)
I
NUMANA Number of Analog Values (0–8) 0
NUMDSW Number of 16-bit Digital Status Words (0, 1, 2) 1
TREA1 Trigger Reason Bit 1 (SEL
OGIC Equation) NA
TREA2 Trigger Reason Bit 2 (SEL
OGIC Equation) NA
TREA3 Trigger Reason Bit 3 (SEL
OGIC Equation) NA
TREA4 Trigger Reason Bit 4 (SEL
OGIC Equation) NA
PMTRIG Trigger (SEL
OGIC Equation) NA
MRTCDLY Maximum RTC Synchrophasor Packet Delay
(20–1000 ms)
500
RTCRATE Remote Messages per Second
{1, 2, 5, 10, 25, or 50 when NFREQ := 50}
{1, 2, 4, 5, 10, 12, 15, 20, 30, or 60 when
NFREQ := 60}
2
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