P.8.12
SEL-411L Relay Protection Manual Date Code 20151029
Oscillography, Events, and SER
Oscillography
TW Fault Location Information
TPKA = 21/08/2013,14:04:37.656871413
PPKA = 0
PKOKA = 1
TPKB = 21/08/2013,14:04:37.656871414
PPKB = 1
PKOKB = 1
TPKC = 21/08/2013,14:04:37.656871415
PPKC = 0
PKOKC = 1
TWSPL = 2
TW Fault Detector Information
TWTSFD = 21/08/2013,14:04:37.656870028
TWTSFD_channel = BW
TWPOL = 0, 1, 1, NA, NA, NA
IIRFO = 10.350959, 10.350959, 10.350959, NA, NA, NA
TW Settings
TWIW : 1
TWIX : 0
CTRW = 100
CTRX = 100
Line Length Units (mi,km) : MI
Line Length for TW Fault Location (0.20-1000) : 189.03
Secondary Cable Length in Yards (0-2000) : 150
Propagation Vel.(pu in Speed of Light) (0.10000-1) : 0.99081
Internal Fault Condition for TWFL (SELogic Eq.) = (COMPRM OR 87OP) AND TRIP
Figure 8.6 COMTRADE Header File
The header includes the following traveling wave information. (This
information is only available if the event capture is associated with the
assertion of Relay Word bit FLTINT.)
➤ TPK: Traveling wave peak time stamp (date, time), where
represents phase A, B, C
➤ PPK: Traveling wave peak polarity (1 = positive, 0 = negative)
➤ PKOK: Traveling wave peak validity (1 = valid peak present, 0
= no valid peak present)
➤ TWSPL: Phase selected for traveling wave calculations
(1 = A-phase, 2 = B-phase, 3 = C-phase)
➤ TWTSFD: Time stamp when the relay detected the traveling
wave. TWTSFD displays a value when the relay detects a
traveling wave on any phase. TWTSFD = NA if the relay did
not detect a traveling wave.
➤ TWTSFD_channel: The phase and current terminal associated
with the time stamp. TWTSFD_channel has the format of x, y
where x is the phase and y is the current terminal. The current
terminal the report displays is the current terminal configured
for traveling wave fault location on which the relay detected the
first incidence of the traveling wave. For example, if a wave
was first detected on Phase B, Terminal W, then
TWTSFD_channel = BW.
➤ TWPOL: Polarity of the traveling wave currents on channel W
and X when the relay detects a traveling wave on any phase.
(1 = positive, 0 = negative). If the relay did not detect a
traveling wave, or if a particular current channel was not
configured for traveling wave fault location, then TWPOL is
NA. For example, if only Terminal W was configured for
traveling wave fault location (by setting TWCOMI = N or
TWALTI = 0), then TWPOL is NA for Terminal X.
➤ IRRFO: IRR filter outputs for channels W and X when the
relay detects a traveling wave on any phase. If the relay did not
detect a traveling wave, or if a particular current channel was
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