18.43
Date Code 20171006 Instruction Manual SEL-400 Series Relays
Synchrophasors
PMU Recording Capabilities
.
.
<Data Frame t>
<Data Frame t+1>
.
.
.
<Data Frame n>
where:
t = the number of pretrigger data frames, and is equal to PMPRE • MRATE.
n = the total number of data frames, and is equal to PMLER • MRATE.
<Data Frame t+1> is the first data frames with Bit 11 in the STAT field
(PMTRIG) asserted.
The recorded file has the following file naming convention.
yymmdd,hhmmss,0,aaa,bbb,ccc.PMU
where,
yymmdd, hhmmss = the UTC time stamp of the first data frame in the file
with bit 11 (PMTRIG) asserted
aaa = the last three characters of the PMSTNq setting (after removing char-
acters “ / \ < > * | : ; [ ] $ % { } and the spaces)
bbb = the last three characters of the PMIDq
ccc = the CONAM setting (after removing the spaces)
Additional PMTRIG assertions are ignored during recording.
Table 18.26 shows the setting name, description, and default value to help config-
ure the data recording.
Descriptions for the settings in Table 18.26 are as follows.
EPMDR
Use the EPMDR setting to enable synchrophasor data recording. This setting is
hidden when EPMU := N. When EPMDR = Y, phasor measurement data record-
ing will begin on the rising edge of PMTRIG. Any subsequent PMTRIG asser-
tions during the allotted recording period (PMLER) will not result in another
PMU data recording being started. The relay will store synchrophasor measure-
Table 18.26 PMU Recording Settings
Setting Description
EPMDR
a
a
This setting is forced to N if MFRMT = FM.
Enable PMU Data Recording (Y, N)
SPMDR
b
b
This setting is hidden if EPMRD = N.
Select Data Configuration for PMU Recording (1–NUMPHDC)
CONAM
b
Company Name (1–3 characters)
PMLER
b
Length of PMU Triggered Data (2–120 s)
PMPRE
b
Length of PMU Pretriggered Data (1–20 s)
To Next Page
Loading...
