5.2 Balanced Three-phase Fault Example 5.1 Determine the fault current, the bus voltages, and currents during the fault when a balanced three-phase fault with a fault impedance Zf = j0.16 per unit occurs on: the line j0.1 j0.2 j0.1 j0.2 j0.8 a) Bus 3 [-j2.0 pu, -j0.1 pu, -j1.1 pu, - jo.9 pu], b) Bus 2 [-j2.5 pu, -j0.5 pu, -j0.5 pu, - jo.5 pu], c) Bus 1 [j3.125 pu, j3.125 pu, -j3.125 pu, -j3.125 pu]. j0.4 j0.4 Figure 1

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5.2 Balanced Three-phase Fault
Example 5.1
Determine the fault current, the
bus voltages, and
currents during the fault when a
balanced three-phase fault with a
fault impedance Zf = j0.16 per
unit occurs on:
the
line
j0.1
j0.2
j0.1
j0.2
j0.8
a) Bus 3 [-j2.0 pu, -j0.1 pu, -j1.1 pu, -
jo.9 pu],
b) Bus 2 [-j2.5 pu, -j0.5 pu, -j0.5 pu, -
jo.5 pu],
c) Bus 1 [j3.125 pu, j3.125 pu, -j3.125
pu, -j3.125 pu].
2
j0.4 j0.4
Figure 1
Transcribed Image Text:5.2 Balanced Three-phase Fault Example 5.1 Determine the fault current, the bus voltages, and currents during the fault when a balanced three-phase fault with a fault impedance Zf = j0.16 per unit occurs on: the line j0.1 j0.2 j0.1 j0.2 j0.8 a) Bus 3 [-j2.0 pu, -j0.1 pu, -j1.1 pu, - jo.9 pu], b) Bus 2 [-j2.5 pu, -j0.5 pu, -j0.5 pu, - jo.5 pu], c) Bus 1 [j3.125 pu, j3.125 pu, -j3.125 pu, -j3.125 pu]. 2 j0.4 j0.4 Figure 1
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