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5.6 GROUPED ELEMENTS
The directional and non-directional quadrilateral ground distance characteristics are shown below. The directional and
non-directional mho ground distance characteristics are the same as those shown for the phase distance element in
the previous sub-section.
Figure 5–71: DIRECTIONAL QUADRILATERAL GROUND DISTANCE CHARACTERISTIC
5
Figure 5–72: NON-DIRECTIONAL QUADRILATERAL GROUND DISTANCE CHARACTERISTIC
•
GND DIST Z1 Z0/Z1 MAG: This setting specifies the ratio between the zero-sequence and positive-sequence imped-
ance required for zero-sequence compensation of the ground distance elements. This setting is available on a per-
zone basis, enabling precise settings for tapped, non-homogeneous, and series compensated lines.
•
GND DIST Z1 Z0/Z1 ANG: This setting specifies the angle difference between the zero-sequence and positive-
sequence impedance required for zero-sequence compensation of the ground distance elements. The entered value is
the zero-sequence impedance angle minus the positive-sequence impedance angle. This setting is available on a per-
zone basis, enabling precise values for tapped, non-homologous, and series-compensated lines.
•
GND DIST Z1 ZOM/Z1 MAG: The ground distance elements can be programmed to apply compensation for the zero-
sequence mutual coupling between parallel lines. If this compensation is required, the ground current from the parallel
line (3I_0) measured in the direction of the zone being compensated must be connected to the ground input CT of the
CT bank configured under the
5-156
X
COMP LIMIT
COMP LIMIT
DIR COMP LIMIT
RCA
LFT BLD RCA
-LFT BLD
X
COMP LIMIT
COMP LIMIT
LFT BLD RCA
RCA
-LFT BLD
REV REACH
RCA
COMP LIMIT
COMP LIMIT
"-" NON-HOMOGEN. ANG
"+" NON-HOMOGEN. ANG
. This setting specifies the ratio between the magnitudes of the mutual
DISTANCE SOURCE
T60 Transformer Protection System
"+" NON-HOMOGEN. ANG
"-" NON-HOMOGEN. ANG
DIR COMP LIMIT
DIR RCA
RGT BLD RCA
RGT BLD
837769A1.CDR
"+" NON-HOMOGEN. ANG
"-" NON-HOMOGEN. ANG
RGT BLD RCA
RGT BLD
837770A1.CDR
5 SETTINGS
R
R
GE Multilin
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