ABB REG670 Applications Manual page 639

1MRK 502 071-UEN -
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual
Table 68: General settings parameters for the Measurement function
Setting Short description
Operation
Operation
PowAmpFact Amplitude factor to scale power
calculations
PowAngComp Angle compensation for phase
shift between measured I & U
Mode
Selection of measured current
and voltage
k Low pass filter coefficient for
power measurement, U and I
UGenZeroDb Zero point clamping in % of
Ubase
IGenZeroDb Zero point clamping in % of Ibase
UBase (set in Base setting for voltage level in
Global base) kV
IBase (set in Base setting for current level in A
Global base)
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 311.
Selected
value
Off / On On
1.000
180.0
L1L2
0.00
25
3
35.00
495
31.5
Section 17
Monitoring
Comment
On
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
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