Flexelements; Sensitive Directional Power - GE G60 Instruction Manual

6 ACTUAL VALUES
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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.
Table 6–2: FLEXELEMENT™ BASE UNITS
dcmA
FREQUENCY
FREQUENCY RATE OF CHANGE
PHASE ANGLE
POWER FACTOR
RTDs
SENSITIVE DIR POWER
(Sns Dir Power)
SOURCE CURRENT
SOURCE ENERGY
(SRC X Positive and Negative
Watthours); (SRC X Positive and
Negative Varhours)
SOURCE POWER
SOURCE VOLTAGE
STATOR DIFFERENTIAL
CURRENT
(Stator Diff Iar, Ibr, and Icr)
STATOR GROUND 3RD
HARMONIC VOLTAGES
(Stator Gnd Vn/V0 3rd)
STATOR RESTRAINING
CURRENT
(Stator Diff Iad, Ibd, and Icd)
SYNCHROCHECK
(Max Delta Volts)
VOLTS PER HERTZ
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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.
GE Multilin
!" !

FLEXELEMENTS

FLEXELEMENT 1(16)
FLEXELEMENT 1
OpSig: 0.000 pu
BASE = maximum value of the
DCMA INPUT MAX
under the +IN and –IN inputs.
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
= maximum value of 3 × V
P
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
V = maximum nominal primary RMS value of the +IN and –IN inputs
BASE
I = maximum primary RMS value of the +IN and –IN inputs
BASE
(CT primary for source currents, and bus reference primary current for bus differential currents)
V = Primary phase voltage of the
BASE
I = maximum primary RMS value of the +IN and –IN inputs
BASE
(CT primary for source currents, and bus reference primary current for bus differential currents)
V = maximum primary RMS value of all the sources related to the +IN and –IN inputs
BASE
BASE = 1.00 pu
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SENSITIVE DIRECTIONAL POWER

DIRECTIONAL POWER 1
3Φ: 0.000 W
DIRECTIONAL POWER 2
3Φ: 0.000 W
G60 Generator Management Relay
setting for the two transducers configured
× I
for the +IN and –IN inputs of the sources
BASE BASE
× I
for the +IN and –IN inputs
BASE
STATOR GROUND SOURCE
6.3.8 SENSITIVE DIRECTIONAL POWER
6.3 METERING
6.3.7 FLEXELEMENTS™
and
RCA CALIBRATION
6-15
6