L.8
SEL-351A Relay Instruction Manual Date Code 20080213
SEL Synchrophasors
Settings
Settings
The phasor measurement control unit (PMCU) settings are listed in Table L.5.
The Global enable setting EPMU must be set to Y before the remaining
SEL-351A synchrophasor settings are available. No synchrophasor data
collection can take place when EPMU = N. Use the serial port settings in
Table L.6 to transmit data using the SEL Fast Message Synchrophasor
protocol.
Certain settings in Table L.5 are hidden, depending on the status of other
settings. For example, if PHDATAV = V1, the PHDATAI setting is hidden to
limit the number of settings for your synchrophasor application.
Table L.5 SEL-351A Global Settings for Synchrophasors
Global
Settings
Description Default
EPMU
a
a
EPMU is not available if global setting PTCONN = DELTA.
Enable Synchronized Phasor Measurement (Y, N) N
b
b
Set EPMU = Y to access the remaining settings.
PMID PMU Hardware ID 1
PHDATAV Phasor Data Set, Voltages (V1, ALL) V1
VCOMP Voltage Angle Compensation Factor (–179.99 to 180 degrees) 0.00
PHDATAI
c
c
Setting hidden when PHDATAV = V1.
Phasor Data Set, Currents (ALL, NA) NA
ICOMP Current Angle Compensation Factor (–179.99 to 180 degrees) 0.00
TS_TYPE Time Source Type (IRIG, IEEE) IRIG
Table L.6 SEL-351A Serial Port Settings for Synchrophasors
Port Setting Description Default
PROTO Protocol (SEL, LMD, DNP, MBA, MBB, MB8A,
MB8B, MBGA, MBGB)
a
a
Some of the other PROTO setting choices may not be available.
SEL
b
b
Set PROTO = SEL to enable (on this port) the SEL Fast Message Synchrophasor protocol.
SPEED Baud Rate (300 to 38400)
c
c
Maximum Port 1 speed is 19200.
2400
BITS Data Bits (6, 7, 8) 8
PARITY Parity (O, E, N) N
STOP Stop Bits (1, 2) 1
RTSCTS Enable Hardware Handshaking (Y, N, MBT) N
FASTOP Fast Operate Enable (Y, N) N
Courtesy of NationalSwitchgear.com