Question

a single phase overhead transmission line delivers 5000 kw at 11 KV and 0.8 factor lagging. total resistance and inductive reactance per conductor is 0.45 ohm and 0.08 ohm respectively , calculate line losses

Answer 1

$I = \frac{P}{V_R cos(\phi_R)} = \frac{5000\times 100}{11000\times 0.8}=568.18A$

Line loss, $I^2R = (568.18^2 \times 0.45) = 145.27 KW$