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Three-Phase Overhead Transmission Line

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A three-phase overhead transmission line has a per-phase resistance of 0.15 ohm/km, and a per-phase inductance of 1.3263 mH/km. Assume that the shunt capacitance is negligible. The length of the line is 40 kilometers and it operates under 220 kV and 60-Hz. The line is supplying a three-phase load of 381 MVA at 0.8 power factor leading and at 220 kV. Using the short line method calculation the sending-end line-to-line voltage and the voltage regulation.

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