A 45-km, 220-kV, 60-Hz three-phase overhead transmission line has a per-phase resistance of 0.2 ohm/km, a per-phase inductance of 1.4263 mH/km, and negligible shunt capacitance. Using the short line model, find the sending-end voltage, voltage regulation, sending-end power, and transmission line efficiency when the line is supplying a three-phase load of: (a) 371 MVA at 0.8 power factor lagging and at 220 kV, (b) 371 MVA at 0.8 power factor leading and at 220 kV

A 45-km, 220-kV, 60-Hz three-phase overhead transmission line has a per-phase resistance of 0.2 ohm/km, a per-phase inductance of 1.4263 mH/km, and negligible shunt capacitance. Using the short line model, find the sending-end voltage, voltage regulation, sending-end power, and transmission line efficiency when the line is supplying a three-phase load of: (a) 371 MVA at 0.8 power factor lagging and at 220 kV, (b) 371 MVA at 0.8 power factor leading and at 220 kV

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

Chapter5: Transmission Lines: Steady-state Operation

Section: Chapter Questions

Problem 5.11P: A 40-km, 220-kV, 60-Hz, three-phase overhead transmission line has a per-phase resistance of...

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Transmission line conductance is usually neglected in power system studies. True False
A 40-km, 220-kV, 60-Hz, three-phase overhead transmission line has a per-phase resistance of 0.15/km, a per-phase inductance of 1.3263 mH/km, and negligible shunt capacitance. Using the short line model, find the sending-end voltage, voltage regulation, sending-end power, and transmission line efficiency when the line is supplying a three-phase load of (a) 381 MVA at 0.8 power factor lagging and at 220 kV and (b) 381 MVA at 0.8 power factor leading and at 220 kV.
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