Sensitive Directional Power - GE L90 Instruction Manual

6 ACTUAL VALUES
PATH: ACTUAL VALUES METERING
SENSITIVE
DIRECTIONAL POWER
MESSAGE
The effective operating quantities of the sensitive directional power elements are displayed here. The display may be useful
to calibrate the feature by compensating the angular errors of the CTs and VTs with the use of the
settings.
PATH: ACTUAL VALUES METERING
SYNCHROCHECK 1
MESSAGE
MESSAGE
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.
PATH: ACTUAL VALUES METERING
TRACKING FREQUENCY
The tracking frequency is displayed here. The frequency is tracked based on configuration of the reference source. The
is based upon positive sequence current phasors from all line terminals and is synchronously
TRACKING FREQUENCY
adjusted at all terminals. If currents are below 0.125 pu, then the
PATH: ACTUAL VALUES METERING
FREQUENCY RATE
OF CHANGE
MESSAGE
MESSAGE
MESSAGE
The metered frequency rate of change for the frequency rate of change elements is shown here.
GE Multilin

SENSITIVE DIRECTIONAL POWER

DIRECTIONAL POWER 1
3 : 0.000 W
DIRECTIONAL POWER 2
3 : 0.000 W
SYNCHROCHECK SYNCHROCHECK 1(2)
SYNCHROCHECK 1 DELTA
VOLT: 0.000 V
SYNCHROCHECK 1 DELTA
PHASE: 0.0°
SYNCHROCHECK 1 DELTA
FREQ: 0.00 Hz
TRACKING FREQUENCY
TRACKING FREQUENCY:
60.00 Hz
NOMINAL FREQUENCY
FREQUENCY RATE OF CHANGE
FREQUENCY RATE OF
CHANGE 1: 0.00 Hz/s
FREQUENCY RATE OF
CHANGE 2: 0.00 Hz/s
FREQUENCY RATE OF
CHANGE 3: 0.00 Hz/s
FREQUENCY RATE OF
CHANGE 4: 0.00 Hz/s
L90 Line Current Differential System
6.3 METERING
6.3.4 SENSITIVE DIRECTIONAL POWER
and
RCA
6.3.5 SYNCHROCHECK
6.3.6 TRACKING FREQUENCY
is used.
6.3.7 FREQUENCY RATE OF CHANGE
CALIBRATION
6
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