An efficient method for studying and analysing the propagation behaviour of overhead transmission lines

Abstract

The paper describes a method, based on the solution of travelling-wave phenomena in polyphase systems by the use of matrix methods, of deriving the basic matrices of the conductor system taking into account the effect of conductor geometry, conductor internal impedance and the earth-return path. It is then shown how they may be expressed in symmetrical-component form where conductor asymmetry is neglected. The manipulation of these matrices to obtain the modal parameters of the line is also described. The methods of studying the effectiveness of the carrier channel on a power line under various power frequency load conditions are presented as well.

Key Words: Admittance matrix, conductor geometry, impedance matrix, load cycle, modal analysis, power line carrier.

Ife Journal of Science Vol.6(2) 2004: 147-154