Single Characteristic With P Forward Zone; Zones Coverage - GE MiCOM P40 Agile Technical Manual

Commissioning
MiCOM P40 Agile P442, P444
Figure 10: Single characteristic with P forward zone
Z1, Z2, Z3, Zp, Z4
R1G, R2G, R3G, RpG : resistance limits of zone 1, 2, 3, p, 4 for single-phase fault.
K01, K02, K03, K0p
Zone 1, 2, 3 & P can have different resistance limits and residual factors. Zones 3 and 4
(start zone) have the same resistance sensitivity and residual compensation factor. The
residual compensation factor depends of the line's characteristic in each zone.
Line angle: ϕpg = Arg
and Z1 is the positive impedance.

Zones coverage

Different line angles for each single-phase characteristic zone can be defined, and,
depending on the configuration of each zone, some encroachment between zones could
occur.
Figure 11:
: limits of zone 1, 2, 3, p, 4
: residual compensation factor of zone 1, 2, 3, p
+ +
2 xZ 1 Z 0
where Zx0 is the zero sequence impedance for zone x
3
P44x/EN CM/Hb6
(CM) 9-27