Tracking Frequency; Frequency Rate Of Change; Flexelements - GE F60 Instruction Manual

6.3 METERING
PATH: ACTUAL VALUES
 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
System section of chapter 5 for details.
PATH: ACTUAL VALUES
 FREQUENCY RATE
 OF CHANGE
The metered frequency rate of change for the frequency rate of change elements is shown here.
PATH: ACTUAL VALUES
6
 FLEXELEMENT 1

The operating signals for the FlexElements are displayed in pu values using the following definitions of the base units.
Table 6–2: FLEXELEMENT BASE UNITS (Sheet 1 of 2)
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
DCmA
FAULT LOCATION
FREQUENCY

FREQUENCY RATE OF CHANGE

PHASE ANGLE
POWER FACTOR
RTDs
SENSITIVE DIR POWER
(Sns Dir Power)
SOURCE CURRENT
SOURCE ENERGY
(Positive and Negative Watthours,
Positive and Negative Varhours)
SOURCE POWER
SOURCE THD & HARMONICS
6-24
 
METERING

TRACKING FREQUENCY

TRACKING FREQUENCY:
60.00 Hz
setting in the
SETTINGS
 
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
 
METERING

FLEXELEMENTS

FLEXELEMENT 1
OpSig: 0.000 pu
2
BASE = 2000 kA
BASE = maximum value of the
under the +IN and –IN inputs.
BASE = Line Length as specified in Fault Report
f = 1 Hz
BASE
df/dt = 1 Hz/s
BASE
ϕ
= 360 degrees (see the UR angle referencing convention)
BASE
PF = 1.00
BASE
BASE = 100°C
P = maximum value of 3 × V
BASE
configured for the sensitive power directional element(s).
I = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
E = 10000 MWh or MVAh, respectively
BASE
P = maximum value of V
BASE
BASE = 1%
F60 Feeder Protection System
 
SYSTEM SETUP

FLEXELEMENT 1(8)
× cycle
setting for the two transducers configured
DCMA INPUT MAX
× I for the +IN and –IN inputs of the sources
BASE BASE
× I
for the +IN and –IN inputs
BASE BASE
6 ACTUAL VALUES
6.3.5 TRACKING FREQUENCY
menu. See the Power
POWER SYSTEM
6.3.6 FREQUENCY RATE OF CHANGE
6.3.7 FLEXELEMENTS
GE Multilin