A three-phase 50 Hz, 400 kV transmission line is 300 km long. The line inductance is 1 mH/km per phase

Q. A three-phase 50 Hz, 400 kV transmission line is 300 km long. The line inductance is 1 mH/km per phase, and the capacitance is 0.01 µF/km per phase. The line is under open circuit condition at the receiving end and energized with 400 kV at the sending end, the receiving end line voltage in kV (round off to two decimal places) will be                       .

Solution:

Given that, sending end voltage (VS) = 400 kV

length of transmission line (L) = 300 km

inductance (L) = 1 mH/km/phase

capacitance (c) = 0.01 μF/km/phase

We know that,