ABB RELION 670 Series Technical Manual page 705

1MRK 502 066-UUS B
Table 410: Voltage selection for CVGAPC function
Set value for the
parameter
VoltageInput
1 PhaseA
2 PhaseB
3 PhaseC
4 PosSeq
5 -NegSeq
6 -3ZeroSeq
7 MaxPh
8 MinPh
9 UnbalancePh
10 PhaseA-PhaseB
11 PhaseB-PhaseC
12 PhaseC-PhaseA
13 MaxPh-Ph
14 MinPh-Ph
15 UnbalancePh-Ph
It is important to notice that the voltage selection from table
the actual external VT connections. The three-phase VT inputs can be connected to IED as either
three phase-to-ground voltages V
information about actual VT connection is entered as a setting parameter for the pre-processing
block, which will then take automatic care about it.
The user can select one of the current quantities shown in table
feature:
Technical manual
Comment
CVGAPC function will measure the phase A voltage phasor
CVGAPC function will measure the phase B voltage phasor
CVGAPC function will measure the phase C voltage phasor
CVGAPC function will measure internally calculated positive sequence voltage phasor
CVGAPC function will measure internally calculated negative sequence voltage
phasor. This voltage phasor will be intentionally rotated for 180° in order to enable
easier settings for the directional feature when used.
CVGAPC function will measure internally calculated zero sequence voltage phasor
multiplied by factor 3. This voltage phasor will be intentionally rotated for 180° in
order to enable easier settings for the directional feature when used.
CVGAPC function will measure voltage phasor of the phase with maximum magnitude
CVGAPC function will measure voltage phasor of the phase with minimum magnitude
CVGAPC function will measure magnitude of unbalance voltage, which is internally
calculated as the algebraic magnitude difference between the voltage phasor of the
phase with maximum magnitude and voltage phasor of the phase with minimum
magnitude. Phase angle will be set to 0° all the time
CVGAPC function will measure the voltage phasor internally calculated as the vector
difference between the phase A voltage phasor and phase B voltage phasor (V
CVGAPC function will measure the voltage phasor internally calculated as the vector
difference between the phase B voltage phasor and phase C voltage phasor (V
CVGAPC function will measure the voltage phasor internally calculated as the vector
difference between the phase C voltage phasor and phase A voltage phasor ( V
CVGAPC function will measure ph-ph voltage phasor with the maximum magnitude
CVGAPC function will measure ph-ph voltage phasor with the minimum magnitude
CVGAPC function will measure magnitude of unbalance voltage, which is internally
calculated as the algebraic magnitude difference between the ph-ph voltage phasor
with maximum magnitude and ph-ph voltage phasor with minimum magnitude.
Phase angle will be set to 0° all the time
, V & V or three phase-to-phase voltages V
A B C
Multipurpose protection
410 is always applicable regardless
, V
AB BC
411 for built-in current restraint
Section 11
-V )
A B
-V )
B C
-V )
C A
& V ). This
CA
699