Power transformer modeled as a transmission line for simple simulation of complex topologies in the PLC frequency range

Abstract

This paper presents the use of a power cable modeling approach based on the two port network theory and its application to power transformers. More specifically, it takes place in the frame of the evaluation of the capacity of the power network infrastructure to support narrowband PLC technology. In this context, a classical two-port network modeling approach of cable transfer function is transposed to other devices like LV-LV transformers. In order to evaluate the impact of derivations of the power network, a classical distribution system topology is also studied. Practically, the effect of power network components is modeled by a cascade of transmission matrices. A comparison between model results and measurement is performed to show the coherence of results.