Nonuniform three-phase power lines: resonance effects due to conductor transposition
This paper is concerned with nonuniform power line modelling. It deals with the resonance effects produced by conductor transposition in long overhead three-phase lines. A frequency-domain analysis is conducted showing that the modal propagation parameters characterising the transmission line structure exhibit a repetitive resonant behaviour for frequencies such that the overall transposition cycle length gets close to an integer multiple of one half wavelength. Consideration of these resonance phenomena is of major importance and should be taken into account in a variety of situations, for example, in power line carrier communications and line transient studies.
resonance nonuniform power-lines transposed conductors multiconductor transmission lines modal analysis eigenvalue problems modelling and simulation