Department of Electrical And Computer Engineering
ECE 5810, Spring 2009
C. McKeough
2/9/09
Unit II: Power Transmission Lines
Objectives
Be able to:
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Determine the ac resistance of ACSR conductors at a given temperature using
manufacturer’s tables.
Calculate the “loop” or “round-trip” inductance and the “loop” self-induced ac voltage of
a single phase line.
Calculate the mutually-induced “loop” ac voltage on a communication line in the vicinity
of a single-phase power line.
Calculate the inductance of a transposed three-phase line that uses bundled conductors.
Calculate the capacitance of a transposed three-phase line that uses bundled conductors.
Determine the inductive reactance and capacitive susceptance of a three-phase line using
standard tables.
Calculate the characteristic impedance and the propagation constant of a transmission
line.
Calculate the efficiency of transmission of a transmission line.
Determine the ABCD parameter model or the pi-equivalent circuit model for a long
transmission line.
Determine the nominal pi-equivalent circuit model for a medium length or shorter
transmission line.
Calculate the receiving-end complex power of a transmission line using either the piequivalent circuit model or the circle diagram.
Readings
Bergen & Vittal, Power Systems Analysis, 2nd ed., chapter 3.