1. A three-phase overhead line 200 km long has resistance= 0.16 Ω/km an conductor diameter of...

1. A three-phase overhead line 200 km long has resistance= 0.16 Ω/km an conductor diameter of 2 cm with spacing of 4 m. Find: (a) the ABCD constants (b) the Vs and Is. When the line is delivering full load of 50 MW at 132 kV and 0.8 lagging pf, (c) efficiency of transmission line.

2. A three-phase voltage of 11 kV is applied to a line having R = 10 Ω and X = 12 Ω per conductor. At the end of the line is a balanced load of P kW at a leading power factor. At what value of P is the voltage regulation zero when the power factor of the load is (a) 0.707, (b) 0.85?

3. The generalized circuit constants of a transmission line are A - 0.93+j0.0 1 6 B=20+ j14 0 The load at the receiving-end is 60 MVA, 50 Hz 0.8 power factor lagging. The voltage at the supply end is 22O kV. Calculate the load voltage.

Expert Solution

Manojponduru answered 4 months ago

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