Question

A 132 kV, 3-phase, 50-Hz transmission line has the following parameters: r = 0.11 ?/km, L = 1.5 mH/km, C = 0.01?F /km The transmission line is 150 km long and is supplying a lagging load of 50 MW (0.8 PF) at 125 kV. Neglecting the shunt conductance of the line, calculate the following: a) Sending end voltage b) Sending end current c) Efficiency of the line

          A 132 kV, 3-phase, 50-Hz transmission line has the following parameters:

r = 0.11 ?/km, L = 1.5 mH/km, C = 0.01?F /km

The transmission line is 150 km long and is supplying a lagging load of 50 MW (0.8 PF) at 125 kV.

Neglecting the shunt conductance of the line, calculate the following:

a) Sending end voltage
b) Sending end current
c) Efficiency of the line

A 132 kV, 3-phase, 50-Hz transmission line has the following parameters:

r = 0.11 ?/km, L = 1.5 mH/km, C = 0.01?F /km

The transmission line is 150 km long and is supplying a lagging load of 50 MW (0.8 PF) at 125 kV.

Neglecting the shunt conductance of the line, calculate the following:

a) Sending end voltage
b) Sending end current
c) Efficiency of the line

Added by Patrick F.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

09/06/2023

Step 1

8 \) (lagging), and load voltage \( V_L = 125 \, \text{kV} \). - Apparent power \( S = \frac{P}{\text{PF}} = \frac{50 \times 10^6}{0.8} = 62.5 \, \text{MVA} \). - Load current \( I_L = \frac{S}{\sqrt{3} \times V_L} = \frac{62.5 \times 10^6}{\sqrt{3} \times 125 Show more…

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