GE F60 UR Series, Инструкция по эксплуатации, Страница: 376 / 558

6-22 F60 Feeder Protection System GE Multilin
6.3 METERING 6 ACTUAL VALUES
6
6.3.6 FREQUENCY RATE OF CHANGE
PATH: ACTUAL VALUES
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METERING
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FREQUENCY RATE OF CHANGE
The metered frequency rate of change for the frequency rate of change elements is shown here.
6.3.7 FLEXELEMENTS™
PATH: ACTUAL VALUES
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METERING
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FLEXELEMENTS
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FLEXELEMENT 1(8)
The operating signals for the FlexElements™ are displayed in pu values using the following definitions of the base units.
„
FREQUENCY RATE
„
OF CHANGE
FREQUENCY RATE OF
CHANGE 1: 0.00 Hz/s
MESSAGE
FREQUENCY RATE OF
CHANGE 2: 0.00 Hz/s
MESSAGE
FREQUENCY RATE OF
CHANGE 3: 0.00 Hz/s
MESSAGE
FREQUENCY RATE OF
CHANGE 4: 0.00 Hz/s
„
FLEXELEMENT 1
„
FLEXELEMENT 1
OpSig: 0.000 pu
Table 6–2: FLEXELEMENT™ BASE UNITS
BREAKER ARCING AMPS
(Brk X Arc Amp A, B, and C)
BASE = 2000 kA
2
×
cycle
dcmA BASE = maximum value of the
DCMA INPUT MAX
setting for the two transducers configured
under the +IN and –IN inputs.
FREQUENCY f
BASE
= 1 Hz
FREQUENCY RATE OF CHANGE df/dt
BASE
= 1 Hz/s
PHASE ANGLE
ϕ
BASE
= 360 degrees (see the UR angle referencing convention)
POWER FACTOR PF
BASE
= 1.00
RTDs BASE = 100°C
SENSITIVE DIR POWER
(Sns Dir Power) P
BASE
= maximum value of 3
×
V
BASE
×
I
BASE
for the +IN and –IN inputs of the sources
configured for the sensitive power directional element(s).
SOURCE CURRENT I
BASE
= maximum nominal primary RMS value of the +IN and –IN inputs
SOURCE ENERGY
(SRC X Positive and Negative
Watthours); (SRC X Positive and
Negative Varhours) E
BASE
= 10000 MWh or MVAh, respectively
SOURCE POWER P
BASE
= maximum value of V
BASE
×
I
BASE
for the +IN and –IN inputs
SOURCE THD & HARMONICS BASE = 1%
SOURCE VOLTAGE V
BASE
= maximum nominal primary RMS value of the +IN and –IN inputs
SYNCHROCHECK
(Max Delta Volts) V
BASE
= maximum primary RMS value of all the sources related to the +IN and –IN inputs