ABB RELION RET670 Applications Manual page 880

Section 18
Monitoring
874
Table 69: General settings parameters for the Measurement function
Setting Short description
Operation
Operation
PowAmpFact Magnitude factor to scale power
calculations
PowAngComp
Angle compensation for phase
shift between measured I & V
Mode
Selection of measured current
and voltage
k Low pass filter coefficient for
power measurement, V and I
VGenZeroDb Zero point clamping in % of
Vbase
IGenZeroDb Zero point clamping in % of
Ibase
VBase (set in Base setting for voltage level in
Global base) kV
IBase (set in Base setting for current level in
Global base) A
SBase (set in Base setting for power in MVA
Global base)
Measurement function application for a generator
Single line diagram for this application is given in figure 405.
Selected
value
Disabled / Enabled Enabled
1.000
180.0
L1L2
0.00
25
3
35.00
495
31.5
1MRK 504 163-UUS A
Comment
Enabled
Function must be
Typically no scaling is required
Typically no angle compensation is
required. However here the required
direction of P & Q measurement is
towards busbar (Not per IED internal
default direction). Therefore angle
compensation have to be used in
order to get measurements in aliment
with the required direction.
Only UL1L2 phase-to-phase voltage
is available
Typically no additional filtering is
required
Set minimum voltage level to 25%
Set minimum current level to 3%
Set LV side rated phase-to-phase
voltage
Set transformer LV winding rated
current
Set based on rated power
Transformer protection RET670 2.2 ANSI
Application manual
SEMOD54481-110 v8