ABB Relion 670 series - Minimum Operate Currents; Distance Measuring Zones, Quadrilateral Characteristic ZMQPDIS (21), ZMQAPDIS (21), ZDRDIR (21 D); Identification

The resistive boundary RLdRev for load encroachment characteristic in reverse direction
can be calculated in the same way as RLdFwd, but use maximum importing power that
might occur instead of maximum exporting power and the relevant Vmin voltage for this
condition.
8.2.3.3 Minimum operate currents
FDPSPDIS (21) has two current setting parameters which blocks the respective phase-to-
ground loop and phase-to-phase loop if the RMS value of the phase current (ILn) and
phase difference current (ILmILn) is below the settable threshold.
The threshold to activate the phase selector for phase-to-ground (IMinPUPG) is set to
securely detect a single phase-to-ground fault at the furthest reach of the phase selection.
It is recommended to set IMinPUPP to double value of IMinPUPG.
The threshold for opening the measuring loop for phase-to-ground fault (3I0Enable_PG)
is set securely detect single line-to-ground fault at remote end on the protected line. It is
recommended to set 3I0BLK_PP to double value of 3I0Enable_PG.
8.3 Distance measuring zones, quadrilateral characteristic
ZMQPDIS (21), ZMQAPDIS (21), ZDRDIR (21D)
8.3.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Distance protection zone, quadrilateral
characteristic (zone 1)
ZMQPDIS
S00346 V1 EN
21
Distance protection zone, quadrilateral
characteristic (zone 2-5)
ZMQAPDIS
S00346 V1 EN
21
Directional impedance quadrilateral ZDRDIR
Z<->
IEC09000167 V1 EN
21D
1MRK 506 369-UUS - Section 8
Impedance protection
Line distance protection REL670 2.2 ANSI 223
Application manual