ABB RELION 670 SERIES Applications Manual page 608

Section 12
Multipurpose protection
602
Table 44: Available selection for voltage quantity within CVGAPC function
Set value for parameter
"VoltageInput"
PhaseA
1
2 PhaseB
PhaseC
3
4 PosSeq
-NegSeq
5
6 -3*ZeroSeq
MaxPh
7
8 MinPh
UnbalancePh
9
10 PhaseA - PhaseB
11 PhaseB - PhaseC
12 PhaseC - PhaseC
13 MaxPh-Ph
MinPh-Ph
14
UnbalancePh-Ph
15
It is important to notice that the voltage selection from table
regardless the actual external VT connections. The three-phase VT inputs can be
connected to IED as either three phase-to-groundvoltages VA, VB and VC or three phase-
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 (VA-VB)
CVGAPC function will measure the voltage phasor internally
calculated as the vector difference between the phase B voltage
phasor and phase C voltage phasor (VB-VC)
CVGAPC function will measure the voltage phasor internally
calculated as the vector difference between the phase C voltage
phasor and phase A voltage phasor (VC-VA)
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
Line distance protection REL670 2.2 ANSI
1MRK 506 369-UUS -
44 is always applicable
Application manual