ABB Relion REC670 Applications Manual page 386

Section 16
Monitoring
Measurement function application for a 110kV OHL
Single line diagram for this application is given in figure 187:
600/1 A
110 0,1
/
3
IEC09000039-1-EN V2 EN-US
Figure 187: Single line diagram for 110kV OHL application
In order to monitor, supervise and calibrate the active and reactive power as indicated in
figure 187
1. Set correctly CT and VT data and phase angle reference channel
section "") using PCM600 for analog input channels
2. Connect, in PCM600, measurement function to three-phase CT and VT inputs
3. Set under General settings parameters for the Measurement function:
•
•
•
Table 39: General settings parameters for the Measurement function
Setting
Operation
PowAmpFact
PowAngComp
Mode
k
UGenZeroDb
IGenZeroDb
UBase (set in
Global base)
IBase (set in
Global base)
380
110kV Busbar
kV
3
P Q
110kV OHL
IEC09000039-2-en.vsd
it is necessary to do the following:
general settings as shown in table 39.
level supervision of active power as shown in table 40.
calibration parameters as shown in table 41.
Short Description
Operation Off/On
Amplitude factor to scale
power calculations
Angle compensation for phase
shift between measured I & U
Selection of measured current
and voltage
Low pass filter coefficient for
power measurement, U and I
Zero point clamping in % of
Ubase
Zero point clamping in % of
Ibase
Base setting for voltage level
in kV
Base setting for current level
in A
IED
Selected Comments
value
On Function must be
1.000 It can be used during commissioning to
achieve higher measurement accuracy.
Typically no scaling is required
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)
L1, L2, L3 All three phase-to-earth VT inputs are
available
0.00 Typically no additional filtering is required
25 Set minimum voltage level to 25%. Voltage
below 25% will force S, P and Q to zero.
3 Set minimum current level to 3%. Current
below 3% will force S, P and Q to zero.
400.00 Set rated OHL phase-to-phase voltage
800 Set rated primary CT current used for OHL
1MRK 511 358-UEN A
SEMOD54481-12 v9
PhaseAngleRef (see
On
Application manual