Sel SEL-421 - Descriptions of Fast Message Synchrophasor Settings; Pmid; PHDATAV, PHDATAI, and PHCURR

R.7.33
Date Code 20111215 Reference Manual SEL-421 Relay
Synchrophasors
SEL Fast Message Synchrophasor Protocol
Descriptions of Fast Message Synchrophasor Settings
The SEL Fast Message synchrophasor settings are a subset of the C37.118
settings. See Descriptions of Synchrophasor Settings on page R.7.12 for
details on settings PMAPP, PHCOMP, VCOMP, IWCOMP, and IXCOMP. For
the remaining settings, the differences are explained in the following pages.
PMID
Defines the number of the PMU.
The PMID setting is a 32-bit numeric value. Use your utility or synchrophasor
data concentrator labeling convention to determine this setting.
PHDATAV, PHDATAI, and PHCURR
These settings define the synchrophasors to be included in the data stream.
There are fewer combinations of synchrophasor data available in the SEL Fast
Message synchrophasor format. For example, it is not possible to send only
current synchrophasors. You must also send voltages.
See Table 7.22 for a list of synchrophasors that can be sent in SEL Fast
Message format, and the order.
Table 7.22 SEL Fast Message Voltage and Current Selections Based on PHDATAV
and PHDATAI
Global Settings
Number of
Synchrophasor
Magnitude and Angle
Pairs Transmitted
Synchrophasor Magnitude
and Angle Pairs to
Transmit, and the
Transmit Order
a
a
The voltages and currents are defined in Ta bl e 7 .2 3.
PHDATAV := V1
PHDATAI := NA
1V
1
PHDATAV := ALL
PHDATAI := NA
4V
A
, V
B
, V
C
, V
1
PHDATAV := ALL
PHDATAI := ALL
8V
A
, V
B
, V
C
, V
1
, I
A
, I
B
, I
C
, I
1
Table 7.23 SEL Fast Message Voltage and Current Synchrophasor Sources
Synchrophasor Labels
From Tab le 7.2 2
Synchrophasor Magnitude and Angle Pair Definition
(Analog Quantities)
Magnitude Angle
V
A
VALPMM VALPMA
V
B
VBLPMM VBLPMA
V
C
VCLPMM VCLPMA
V
1
V1LPMM V1LPMA
I
A
IAcPMM
a
IAcPMA
a
a
The letter c is defined in Ta b le 7 .2 4 .
I
B
IBcPMM
a
IBcPMA
a
I
C
ICcPMM
a
ICcPMA
a
I
1
I1cPMM
a
I1cPMA
a