Sensitive Directional Power; Synchrocheck; Tracking Frequency; Flexelements - GE N60 Instruction Manual

6 ACTUAL VALUES
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
is measured via software-implemented zero-crossing detection of an AC signal. The signal is either a
SOURCE FREQUENCY
Clarke transformation of three-phase voltages or currents, auxiliary voltage, or ground current as per source configuration
(see the 
SYSTEM SETUP
final frequency measurement is passed through a validation filter that eliminates false readings due to signal distortions and
transients.

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
If a synchrocheck function setting is "Disabled", the corresponding actual values menu item is not displayed.

PATH: ACTUAL VALUES METERING
 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
Power System section of chapter 5 for additional details.

PATH: ACTUAL VALUES METERING
 FLEXELEMENT 1

The operating signals for the FlexElements are displayed in pu values using the following definitions of the base units.
GE Multilin N60 Network Stability and Synchrophasor Measurement System
SETTINGS
settings). The signal used for frequency estimation is low-pass filtered. The
POWER SYSTEM


SENSITIVE DIRECTIONAL POWER

DIRECTIONAL POWER 1
3Φ: 0.000 W
DIRECTIONAL POWER 2
3Φ: 0.000 W
 

SYNCHROCHECK

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
setting in the
SETTINGS
 

FLEXELEMENTS

FLEXELEMENT 1
OpSig: 0.000 pu
 
SYSTEM SETUP SIGNAL SOURCES
6.3.3 SENSITIVE DIRECTIONAL POWER
SYNCHROCHECK 1(4)
 
SYSTEM SETUP POWER SYSTEM
FLEXELEMENT 1(16)
6.3 METERING
).
and
RCA CALIBRATION
6.3.4 SYNCHROCHECK
6.3.5 TRACKING FREQUENCY
menu. Refer to the
6.3.6 FLEXELEMENTS™
6-21
6