A 3-ph, 50 Hz, 150 km length O.H.T.L. supplies a load with P MW load at 0.80 lag P.f. and 110 kV where P=24 This T.L has a resistance of 0.11 Ω/km  and an inductance per phase of 1.65 mH/ km and a shunt capacitive reactance per phase of  0.333 MΩ.km. Using nominal T circuit, Find: 1- Constants A, B, C, and D.           2- Voltage drop across this T.L.    3- Transmission line efficiency. 4- The loadability of transmission line (approximate calculations). 5- Suggest a way to decrease the voltage drop to 40% of its value calculated in point 2. Verify your answer. 6- Suggest a way to increase the loadability to double of the value calculated in point 4. Verify your answer. 7- Wave length and velocity of propagation across this transmission line.

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A 3-ph, 50 Hz, 150 km length O.H.T.L. supplies a load with P MW load at 0.80 lag P.f. and 110 kV where P=24

This T.L has a resistance of 0.11 Ω/km  and an inductance per phase of 1.65 mH/ km and a shunt capacitive reactance per phase of  0.333 MΩ.km. Using nominal T circuit, Find:

1- Constants A, B, C, and D.          

2- Voltage drop across this T.L.   

3- Transmission line efficiency.

4- The loadability of transmission line (approximate calculations).

5- Suggest a way to decrease the voltage drop to 40% of its value calculated in point 2. Verify your answer.

6- Suggest a way to increase the loadability to double of the value calculated in point 4. Verify your answer.

7- Wave length and velocity of propagation across this transmission line.

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