A numerical tool for transmission lines

Abstract

The electric line numerical study is usually made through a harmonic approach with the impedance concept based on the Finite Difference discretization in both the time and space domains. These methods present severe drawbacks when used in impulse working and space dependent parameters. We present here an efficient numerical tool for electric line simulation. The mathematical model is based on the telegrapher's equations. In the present paper, we propose a new approach based on the Finite Element Method associated with an efficient algorithm for the numerical resolution of the telegrapher's equations. In practice the electric line is connected to the entrance and the exit with linear or non linear circuits. The objective of this paper is to provide an efficient numerical tool for electric line simulation in complex configurations. © Springer-Verlag Berlin Heidelberg 2005.