Sel SEL-421 - Other Settings Not Present; Upgrading Previous SEL-421 Synchrophasor Settings

R.7.34
SEL-421 Relay Reference Manual Date Code 20111215
Synchrophasors
SEL Fast Message Synchrophasor Protocol
Other Settings Not Present
The SEL Fast Message format does not require the following settings: PHNR,
PHFMT, FNR, NUMANA, NUMDSW, TREA1–TREA4, and PMTRIG.
The SEL Fast Message synchrophasor protocol always includes the frequency
information in floating-point representation, and fourteen user-programmable
SEL
OGIC variables PSV51 through PSV64. There are no user-programmable
analog quantities in the SEL Fast Message synchrophasor protocol.
Upgrading Previous SEL-421 Synchrophasor Settings
See Table 7.25 and Table 7.26 for equivalent settings for your new SEL-421
synchrophasor installation.
Global settings PMAPP, PHCOMP, VCOMP, IWCOMP, and IXCOMP are
new settings (there are no equivalent settings in prior SEL-421 firmware
versions) and may be set as needed.
Table 7.24 SEL Fast Message Current Channel c Definition
PHCURR Setting c in Table 7.23
IW W
IX X
COMB S
Table 7.25 Synchrophasor Voltage and Current Settings Conversion
From Previous SEL-421 Firmware Version
Previous Port Setting
PMDATA
(SEL-421 Firmware
Version R102–R111)
Synchrophasors
Transmitted
Required Global Settings
in SEL-421 Version R112
V1 V1 PHDATAV := V1
PHDATAI := NA
V VA, VB, VC, V1 PHDATAV := ALL
HDATAI := NA
A VA, VB, VC, V1, IA, IB,
IC, I1
PHDATAV := ALL
HDATAI := ALL
Table 7.26 Synchrophasor Current Source Settings Conversion From Previous
SEL-421 Firmware Version
Global Settings
a
a
Starting in SEL-421 firmware version R112, if the SEL-421 ALINEI feature is used to select an
alternate line current source, the synchrophasor current measurement data source will not
switch over to the new source.
Required Global Settings
in SEL-421 Version R112
ESS := N PHCURR := IW
ESS  N LINEI := IW PHCURR := IW
ESS  N LINEI := IX PHCURR := IX
ESS  N LINEI := COMB PHCURR := COMB