PERFECT CONDUCTIVITY APPROXIMATION - MODIFICATION FOR POLYPHASE SYSTEMS

In this paper, we use an analytical model to investigate voltage drop across the conductors of a three-phase parallel wire planar transmissi on Line carrying balanced currents. The expressions derived for the vo ltage drops are identical to those given by the perfect conductor mode l except for a term arising due to the propagation of fields inside th e conductors. The voltage drops thus calculated yield different values for the two end conductors even when they are symmetrically placed wi th respect to the central conductor. The calculations show that the im aginary part of the correction term is of more significance than the r eal part. The results obtained show agreement with the measured values . (C) 1996 American Institute of Physics.