ABB RELION RET670, Applications Manual

Page: 877 / 1016

Table 66: General settings parameters for the Measurement function
Setting Short Description Selected
value
Comments
Operation Operation Off/On On Function must be
On
PowAmpFact Amplitude factor to scale power
calculations
1.000 It can be used during commissioning
to achieve higher measurement
accuracy. Typically no scaling is
required
PowAngComp Angle compensation for phase
shift between measured I & U
0.0 It can be used during commissioning
to achieve higher measurement
accuracy. Typically no angle
compensation is required. As well
here required direction of P & Q
measurement is towards protected
object (as per IED internal default
direction)
Mode Selection of measured current
and voltage
L1, L2, L3 All three phase-to-ground VT inputs
are available
k Low pass filter coefficient for
power measurement, V and I
0.00 Typically no additional filtering is
required
VGenZeroDb Zero point clamping in % of
Ubase
25 Set minimum voltage level to 25%.
Voltage below 25% will force S, P and
Q to zero.
IGenZeroDb Zero point clamping in % of
Ibase
3 Set minimum current level to 3%.
Current below 3% will force S, P and
Q to zero.
VBase (set in
Global base)
Base setting for voltage level in
kV
400.00 Set rated OHL phase-to-phase
voltage
IBase (set in
Global base)
Base setting for current level in
A
1000 Set rated primary CT current used for
OHL
SBase (set in
Global base)
Base Setting for power base in
MVA
1000 Set based on rated Power
Table 67: Settings parameters for level supervision
Setting Short Description Selected
value
Comments
PMin Minimum value -100 Minimum expected load
PMax
Minimum value 100 Maximum expected load
PZeroDb
Zero point clamping in 0.001% of
range
3000 Set zero point clamping to 60 MW
that is, 3% of 200 MW
PRepTyp
Reporting type db Select magnitude deadband
supervision
PDbRepInt
Cycl: Report interval (s), Db: In
0.001% of range, Int Db: In
0.001%s
2000 Set ±Δdb=40 MW that is, 2% (larger
changes than 40 MW will be reported)
Table continues on next page
1MRK 504 163-UUS A
Section 18
Monitoring
Transformer protection RET670 2.2 ANSI 871
Application manual