Tracking Frequency; Flexelements - GE B30 UR Series Instruction Manual
Bus differential system
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Also See for B30 UR Series:
- Instruction manual (594 pages) ,
- Instruction manual (566 pages)
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6.3 METERING
f) FREQUENCY
PATH: ACTUAL VALUES
FREQUENCY
SRC 1
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
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
FLEXELEMENT 1
6
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
BUS DIFFERENTIAL
RESTRAINING CURRENT
(Bus Diff Mag)
BUS DIFFERENTIAL
RESTRAINING CURRENT
(Bus Rest Mag)
DCmA
FREQUENCY
PHASE ANGLE
POWER FACTOR
RTDs
SOURCE CURRENT
SOURCE POWER
SOURCE VOLTAGE
6-16
METERING
SOURCE SRC 1
SRC 1
FREQUENCY:
0.00 Hz
settings). The signal used for frequency estimation is low-pass filtered. The
POWER SYSTEM
METERING
TRACKING FREQUENCY
TRACKING FREQUENCY:
60.00 Hz
setting in the
SETTINGS
METERING
FLEXELEMENTS
FLEXELEMENT 1
OpSig: 0.000 pu
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)
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)
BASE = maximum value of the
under the +IN and –IN inputs.
f
= 1 Hz
BASE
ϕ
= 360 degrees (see the UR angle referencing convention)
BASE
PF
= 1.00
BASE
BASE = 100°C
I
= maximum nominal primary RMS value of the +IN and –IN inputs
BASE
P
= maximum value of V
BASE
V
= maximum nominal primary RMS value of the +IN and –IN inputs
BASE
B30 Bus Differential System
FREQUENCY
SETTINGS
SYSTEM SETUP
SYSTEM SETUP
FLEXELEMENT 1(8)
setting for the two transducers configured
DCMA INPUT MAX
× I
for the +IN and –IN inputs
BASE
BASE
6 ACTUAL VALUES
).
SIGNAL SOURCES
6.3.4 TRACKING FREQUENCY
menu. Refer to the
POWER SYSTEM
6.3.5 FLEXELEMENTS
GE Multilin
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