A 3-ph, 50 Hz, 150 km length O.H.T.L. supplies a load with P 44 MW load at 0.85 lag P.f. and 69 kV This T.L has a resistance of 0.232 Ω/km and an inductive reactance of 0.783 Ω/km and the capacitance to neutral is 0.0446 μF/km. Using nominal π circuit, Find: 1- Constants A, B, C, and D. 2- Sending end voltage. 3- Sending end current 4- Voltage regulation of this T.L. 5- Transmission line efficiency. 6- Draw with a scale the phasor diagram of this model at this operating case. 7- Estimate approximately the loadability of this transmission line at this operating voltage. Justify your estimation and suggest a way to increase this loadability. Verify your answer.

A 3-ph, 50 Hz, 150 km length O.H.T.L. supplies a load with P 44 MW load at 0.85 lag P.f. and 69 kV This T.L has a resistance of 0.232 Ω/km and an inductive reactance of 0.783 Ω/km and the capacitance to neutral is 0.0446 μF/km. Using nominal π circuit, Find: 1- Constants A, B, C, and D. 2- Sending end voltage. 3- Sending end current 4- Voltage regulation of this T.L. 5- Transmission line efficiency. 6- Draw with a scale the phasor diagram of this model at this operating case. 7- Estimate approximately the loadability of this transmission line at this operating voltage. Justify your estimation and suggest a way to increase this loadability. Verify your answer.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter6: Power Flows

Section: Chapter Questions

Problem 6.61P

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