Estimate the distance over which a load of 15,000 kW at 0,85 power factor can be delivered by a 3-phase transmission line having conductors of steel-cored aluminium each of resistance 0.56 per km. The p.d. at the receiving end is to be 132 kV and the loss in transmission is not to exceed 7.5% * 121.9 km 211.9 Km 112.9 Km 243.8 Km

Estimate the distance over which a load of 15,000 kW at 0,85 power factor can be delivered by a 3-phase transmission line having conductors of steel-cored aluminium each of resistance 0.56 per km. The p.d. at the receiving end is to be 132 kV and the loss in transmission is not to exceed 7.5% * 121.9 km 211.9 Km 112.9 Km 243.8 Km

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 5.48P

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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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