GE G30 - Frequency Out-Of-Band Accumulation; Flexelements

GE Multilin G30 Generator Protection System 6-23
6 ACTUAL VALUES 6.3 METERING
6
6.3.7 FREQUENCY OUT-OF-BAND ACCUMULATION
PATH: ACTUAL VALUES  METERING  FREQUENCY OOB ACCUMULATION
The frequency out-of-band accumulation metered values are displayed to the nearest percent as a ratio of the present
accumulation to the user-specified limit. Note that this value can be greater than 100%.
6.3.8 FLEXELEMENTS
PATH: ACTUAL VALUES  METERING  FLEXELEMENTS  FLEXELEMENT 1(16)
The operating signals for the FlexElements are displayed in pu values using the following definitions of the base units.
 FREQUENCY OOB
 ACCUMULATION
FREQUENCY OOB BAND 1
ACCUMULATION: 0.0%
MESSAGE
FREQUENCY OOB BAND 2
ACCUMULATION: 0.0%
↓
MESSAGE
FREQUENCY OOB BAND 7
ACCUMULATION: 0.0%
 FLEXELEMENT 1

FLEXELEMENT 1
OpSig: 0.000 pu
Table 6–2: FLEXELEMENT BASE UNITS
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
(Positive and Negative Watthours,
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 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
VOLTS PER HERTZ BASE = 1.00 pu
XFMR DIFFERENTIAL CURRENT
(Xfmr Iad, Ibd, and Icd Mag)
I
BASE
= maximum primary RMS value of the +IN and -IN inputs
(CT primary for source currents, and transformer reference primary current for transformer
differential currents)
XFMR DIFFERENTIAL
HARMONIC CONTENT
(Xfmr Harm2 Iad, Ibd, and Icd Mag)
(Xfmr Harm5 Iad, Ibd, and Icd Mag)
BASE = 100%
XFMR RESTRAINING CURRENT
(Xfmr Iar, Ibr, and Icr Mag)
I
BASE
= maximum primary RMS value of the +IN and -IN inputs
(CT primary for source currents, and transformer reference primary current for transformer
differential currents)