GE G60 Instruction Manual page 506
Ur series generator protection system
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Also See for G60:
- Instruction manual (768 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (430 pages)
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6.3 METERING
V
and V
are phase-to-phase voltage phasors
AB
CB
Î is the conjugate of I
g) ENERGY METERING
PATH: ACTUAL VALUES
ENERGY
SRC 1
The metered values for real and reactive energy are displayed in this menu. The "SRC 1" text will be replaced by whatever
name was programmed by the user for the associated source (see
Because energy values are accumulated, these values should be recorded and then reset immediately prior to changing
CT or VT characteristics.
h) FREQUENCY METERING
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
6
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.
i) CURRENT HARMONICS AND THD METERING
PATH: ACTUAL VALUES
CURRENT HARMONICS
SRC 1
The metered current harmonics values are displayed in this menu. The "SRC 1" text will be replaced by whatever name
was programmed by the user for the associated source (see
harmonics are measured for each source for the total harmonic distortion (THD) and 2nd to 25th harmonics per phase.
6-20
METERING
SOURCE SRC 1
SRC 1
POS WATTHOUR:
0.000
SRC 1
NEG WATTHOUR:
MESSAGE
0.000
SRC 1
POS VARHOUR:
MESSAGE
0.000
SRC 1
NEG VARHOUR:
MESSAGE
0.000
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
SOURCE SRC 1
SRC 1
Ib:
0.0 Ic:
SRC 1
MESSAGE
Ib:
0.0 Ic:
SRC 1
MESSAGE
Ib:
0.0 Ic:
SRC 1
25TH Ia:
MESSAGE
Ib:
0.0 Ic:
G60 Generator Protection System
ENERGY
Wh
Wh
varh
varh
SETTINGS
FREQUENCY
SETTINGS
SYSTEM SETUP
CURRENT HARMONICS
THD Ia:
0.0
0.0%
2ND Ia:
0.0
0.0%
3RD Ia:
0.0
0.0%
↓
0.0
0.0%
SETTINGS
SYSTEM SETUP
6 ACTUAL VALUES
SYSTEM SETUP
SIGNAL SOURCES
).
SIGNAL SOURCES
SIGNAL SOURCES
).
). Current
GE Multilin
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