A 230-kV, 100-km, 60-Hz three-phase overhead transmission line with a rated current of 900 A/phase has a series impedance z = 0.088 + j0.465 Ω/km and a shunt admittance y = j3.524 μS/km.
(a) Obtain the nominal π equivalent circuit in normal units and in per unit on a base of 100 MVA (three phase) and 230 kV (line-to-line).
(b) Determine the three-phase rated MVA of the line.
(c) Compute the ABCD parameters.
(d) Calculate the SIL.
Complete Step by Step Solved!