Sensitive Directional Power; Synchrocheck; Tracking Frequency; Frequency Rate Of Change - GE L90 Instruction Manual

6.3 METERING
PATH: ACTUAL VALUES
 SENSITIVE
 DIRECTIONAL POWER
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
 SYNCHROCHECK 1

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 PATH: ACTUAL VALUES
 TRACKING FREQUENCY

The tracking frequency is displayed here. The frequency is tracked based on configuration of the reference source. The

TRACKING FREQUENCY

adjusted at all terminals. If currents are below 0.125 pu, then the
PATH: ACTUAL VALUES
 FREQUENCY RATE
 OF CHANGE
The metered frequency rate of change for the frequency rate of change elements is shown here.
6-20
 
METERING

SENSITIVE DIRECTIONAL POWER

DIRECTIONAL POWER 1
3: 0.000 W
DIRECTIONAL POWER 2
MESSAGE
3: 0.000 W
 
METERING

SYNCHROCHECK

SYNCHROCHECK 1 DELTA
VOLT: 0.000 V
SYNCHROCHECK 1 DELTA
MESSAGE
PHASE:
SYNCHROCHECK 1 DELTA
MESSAGE
FREQ:
 
METERING TRACKING FREQUENCY
TRACKING FREQUENCY:
60.00 Hz
is based upon positive sequence current phasors from all line terminals and is synchronously
 
METERING

FREQUENCY RATE OF CHANGE

FREQUENCY RATE OF
CHANGE 1: 0.00 Hz/s
FREQUENCY RATE OF
MESSAGE
CHANGE 2: 0.00 Hz/s
FREQUENCY RATE OF
MESSAGE
CHANGE 3: 0.00 Hz/s
FREQUENCY RATE OF
MESSAGE
CHANGE 4: 0.00 Hz/s
L90 Line Current Differential System
6.3.4 SENSITIVE DIRECTIONAL POWER

SYNCHROCHECK 1(2)
0.0°
0.00 Hz
NOMINAL FREQUENCY
6 ACTUAL VALUES
and
RCA CALIBRATION
6.3.5 SYNCHROCHECK
6.3.6 TRACKING FREQUENCY
is used.
6.3.7 FREQUENCY RATE OF CHANGE
GE Multilin