Training Course in Short Circuit Analysis
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The sequence currents in line L2 are
r − 0.0417 + 0.3067 Ia0 −L 2 = = − j0.4417 j0.6 r 0.778 − 0.6534 Ia1−L 2 = = − j0.4154 j0.3 r − 0.222 + 0.3466 Ia2 −L 2 = = − j0.4154 j0.3
Therphase currents r rin line L2 r are
Ia −L 2 = Ia0 −L 2 + Ia1−L 2 + Ia2 −L 2 = − j1.2725 r r r r 2 Ib −L 2 = Ia0 −L 2 + a Ia1−L 2 + a Ia2 −L 2 = − j0.0262 r r r r 2 Ic −L 2 = Ia0 −L 2 + a Ia1−L 2 + a Ia2 −L 2 = − j0.0262
U. P. National Engineering Center National Electrification Administration
Competency Training & Certification Program in Electric Power Distribution System Engineering