R.7.11
Date Code 20111215 Reference Manual SEL-421 Relay
Synchrophasors
Settings for Synchrophasors
Certain settings in Table 7.1 are hidden, depending on the status of other
settings. For example, if PHDATAI := NA, the PHCURR setting is hidden to
limit the number of settings for your synchrophasor application.
The Port settings for PROTO := PMU, shown in Tab le 7.3, do not include the
settings DATABIT and PARITY; these two settings are internally fixed as
DATABIT := 8, PARITY := N (None). See Data Frame on page R.5.2 for
descriptions of these functions.
PROTO := PMU Does Not Allow Commands on That Serial Port
The PROTO := PMU settings choice in Tab le 7.3 can be made even when
Global setting EPMU := N. However, in this situation, the serial port will not
respond to any commands or requests. Either enable synchrophasors by
making the Table 7.1 settings, or change the port PROTO setting to SEL.
If you use a computer terminal session or
ACSELERATOR QuickSet
®
SEL-5030 software connected to a serial port, and then set that same serial
port PROTO setting to PMU, you will lose the ability to communicate with the
relay through ASCII commands or virtual file interface commands. If this
happens, either connect via another serial port (that has PROTO := SEL) or
use the front-panel HMI SET/SHOW screen to change the disabled port
PROTO setting back to SEL.
Table 7.2 Time and Date Management
Label Prompt
Default
Value
IRIGC
a
a
When MFRMT := C37.118, IRIGC is forced to C37.118.
IRIG-B Control Bits Definition (None, C37.118) None
Table 7.3 SEL-421
Serial Port Settings for Synchrophasors
Setting Description Default
PROTO Protocol (SEL, DNP, MBA, MBB, RTD,
PMU)
a,
b
a
Some of the other PROTO setting choices may not be available.
b
Setting choice PMU is not available on PORT 5.
SEL
c
c
Set PROTO := PMU and PMUMODE := SERVER to enable synchrophasor transmission on this
port using the protocol selected by the Global setting MFRMT.
SPEED Data Speed (300 to 57600) 9600
STOPBIT Stop Bits (1, 2) 1
RTSCTS Enable Hardware Handshaking (Y, N) N
FASTOP Enable Fast Operate Messages (Y, N) N
PMUMODE PMU Mode (CLIENTA, CLIENTB,
SERVER)
SERVER
RTCID
d
d
Setting hidden when PMUMODE := SERVER.
Remote PMU Hardware ID (1–65534) 1
To Next Page
Loading...
