Figure 52: Reverse Resistive Reach Line Construction; Figure 53: Phase Fault Quadrilateral Characteristic Summary - GE MiCOM P40 Technical Manual

P446SV
The impedance on the left side of the right hand resistive line is detected when the angle between S1 and S2 is
greater than 0°.
3.2.2.4 PHASE FAULT REVERSE RESISTIVE REACH LINE
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Figure 52: Reverse resistive reach line construction

For an offset zone, R' is the settable reverse resistive reach (=½*Rx' Ph Res. Rev.). . For a directional zone, R' is fixed
at 25% of the Resistive Reach (=½*Rx Ph Res. Rev.), acting in the opposite direction.
The two signals provided to the comparator are:
S = V - I.R
1
S = I.Z
2
The impedance on the right side of the left hand resistive line is detected when the angle between S1 and S2 is less
than 0°.
3.2.2.5 PHASE FAULT QUADRILATERAL CHARACTERISTIC SUMMARY
The phase fault Quadrilateral characteristics are summarised in the following figure and tables:
V02727

Figure 53: Phase Fault Quadrilateral characteristic summary

P446SV-TM-EN-1
+jX
Z
Ð Z
V / I
V / I - R'
R'
+jX

Z
V / I
R'
Z'
Chapter 7 - Distance Protection
+R
R
+R
3°
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