Function Block - ABB RES670 Technical Manual

1MRK 511 408-UUS A
7.2.3
7.2.4
Phasor measurement unit RES670 2.2 ANSI
Technical manual
there are several out-of-step relays in the power system, then the one which finds the
center of oscillation in its zone 1 should operate first.
Two current channels I3P1 and I3P2 are available in OOSPPAM function to allow the
direct connection of two groups of three-phase currents; that may be needed for very
powerful generators, with stator windings split into two groups per phase, when each
group is equipped with current transformers. The protection function performs a simple
summation of the currents of the two channels I3P1 and I3P2.

Function block

OOSPPAM (78)
I3P1* TRIP
I3P2* TRIPZ1
V3P* TRIPZ2
BLOCK PICKUP
BLKGEN GENMODE
BLKMOT MOTMODE
EXTZ1 R
X
SLIPFREQ
ROTORANG
VCOSPHI
ANSI14000055-1-en.vsd
ANSI12000188 V2 EN-US
Figure 41: OOSPPAM (78) function block
Signals
Table 83: OOSPPAM (78) Input signals
Name Type
I3P1 GROUP
SIGNAL
I3P2 GROUP
SIGNAL
V3P GROUP
SIGNAL
BLOCK BOOLEAN
BLKGEN BOOLEAN
BLKMOT BOOLEAN
EXTZ1 BOOLEAN
Impedance protection
Default Description
- Group connection for three-phase current input 1
- Group connection for three-phase current input 2
- Group connection for three-phase voltage input
0 Block of function
0 Block operation in generating direction
0 Block operation in motor direction
0 Extension of zone1 reach to zone2 settings
Section 7
GUID-CB98C615-8A93-438D-9DF0-542F333198AC v4
PID-3539-INPUTSIGNALS v10
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