ABB RED650, Technical Manual

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Name Values (Range) Unit Step Default Description
kLdRFw 0.50 - 0.90 Mult 0.01 0.75 Multiplication factor for inner resistive
load boundary, forward
kLdRRv 0.50 - 0.90 Mult 0.01 0.75 Multiplication factor for inner resistive
load boundary, reverse
tEF 0.000 - 60.000 s 0.001 3.000 Timer for overcoming single-pole
reclosing dead time
IMinOpPE 5 - 30 %IB 1 10 Minimum operate current in % of IBase
Table 52: ZMRPSB Group settings (advanced)
Name Values (Range) Unit Step Default Description
tP1 0.000 - 60.000 s 0.001 0.045 Timer for detection of initial power swing
tP2 0.000 - 60.000 s 0.001 0.015 Timer for detection of subsequent power
swings
tW 0.000 - 60.000 s 0.001 0.250 Waiting timer for activation of tP2 timer
tH 0.000 - 60.000 s 0.001 0.500 Timer for holding power swing START
output
tR1 0.000 - 60.000 s 0.001 0.300 Timer giving delay to inhibit by the
residual current
tR2 0.000 - 60.000 s 0.001 2.000 Timer giving delay to inhibit at very slow
swing
Table 53: ZMRPSB Non group settings (basic)
Name Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base
Value groups
7.2.6 Operation principle
M13877-4 v4
Power swing detection (ZMRPSB ) function comprises an inner and an outer
quadrilateral measurement characteristic with load encroachment, as shown in
figure
66 .
Its principle of operation is based on the measurement of the time it takes for a
power swing transient impedance to pass through the impedance area between the
outer and the inner characteristics. Power swings are identified by transition times
longer than a transition time set on corresponding timers. The impedance
measuring principle is the same as that used for the distance protection zones. The
impedance and the characteristic passing times are measured in all three phases
separately.
One-out-of-three or two-out-of-three operating modes can be selected according to
the specific system operating conditions.
Section 7
1MRK 505 394-UEN A
Impedance protection
148 Line differential protection RED650 2.2 IEC
Technical manual