GE UR series, Instruction Manual

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6-16 L60 Line Phase Comparison System GE Multilin
6.3 METERING 6 ACTUAL VALUES
6
The metered values for real, reactive, and apparent power, as well as power factor, are displayed in this menu. The "SRC
1" text will be replaced by whatever name was programmed by the user for the associated source (see
SETTINGS
ÖØ
SYS-
TEM SETUP
ÖØ
SIGNAL SOURCES
).
g) FREQUENCY METERING
PATH: ACTUAL VALUES
ÖØ
METERING
Ö
SOURCE SRC 1
ÖØ
FREQUENCY
The metered frequency values are displayed in this menu. The "SRC 1" text will be replaced by whatever name was pro-
grammed by the user for the associated source (see
SETTINGS
ÖØ
SYSTEM SETUP
ÖØ
SIGNAL SOURCES
).
SOURCE FREQUENCY
is measured via software-implemented zero-crossing detection of an AC signal. The signal is either a
Clarke transformation of three-phase voltages or currents, auxiliary voltage, or ground current as per source configuration
(see the
SYSTEM SETUP
ÖØ
POWER SYSTEM
settings). The signal used for frequency estimation is low-pass filtered. The
final frequency measurement is passed through a validation filter that eliminates false readings due to signal distortions and
transients.
6.3.3 SYNCHROCHECK
PATH: ACTUAL VALUES
ÖØ
METERING
ÖØ
SYNCHROCHECK
Ö
SYNCHROCHECK 1(2)
The actual values menu for synchrocheck 2 is identical to that of synchrocheck 1. If a synchrocheck function setting is "Dis-
abled", the corresponding actual values menu item will not be displayed.
6.3.4 TRACKING FREQUENCY
PATH: ACTUAL VALUES
ÖØ
METERING
ÖØ
TRACKING FREQUENCY
The tracking frequency is displayed here. The frequency is tracked based on the selection of the reference source with the
FREQUENCY AND PHASE REFERENCE
setting in the
SETTINGS
ÖØ
SYSTEM SETUP
ÖØ
POWER SYSTEM
menu. Refer to the
Power System section of chapter 5 for additional details.
6.3.5 FLEXELEMENTS™
PATH: ACTUAL VALUES
ÖØ
METERING
ÖØ
FLEXELEMENTS
Ö
FLEXELEMENT 1(8)
MESSAGE
SRC 1 POWER FACTOR
φ
a: 1.000
MESSAGE
SRC 1 POWER FACTOR
φ
b: 1.000
MESSAGE
SRC 1 POWER FACTOR
φ
c: 1.000
„
FREQUENCY
„
SRC 1
SRC 1 FREQUENCY:
0.00 Hz
„
SYNCHROCHECK 1
„
SYNCHROCHECK 1 DELTA
VOLT: 0.000 V
MESSAGE
SYNCHROCHECK 1 DELTA
PHASE: 0.0°
MESSAGE
SYNCHROCHECK 1 DELTA
FREQ: 0.00 Hz
„
TRACKING FREQUENCY
„
TRACKING FREQUENCY:
60.00 Hz
„
FLEXELEMENT 1
„
FLEXELEMENT 1
OpSig: 0.000 pu