Abstract
This paper presents the finite element (FE) time-domain model for numerical solution of frequency-dependent transmission lines problem. Based on the finite element method (FEM) and the generalized trapezoidal rule applied to frequency-dependent transmission line equations, a novel numerical procedure for a solution of a system of the telegraph equations in time-domain is presented. The principles of the proposed method, for the sake of simplicity, have been shown to the case of two-conductor transmission line (TL) where frequency dependent per-unit length TL parameters have been incorporated into the FE local system of equations by the direct convolution algorithm. The proposed numerical method has been tested and compared to the solutions available in literature, and a good correlation has been demonstrated.
Ivica Jurić-Grgić
Full Professor | Department of Theoretical Electrical Engineering and Modelling
Researcher and full professor at the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split. His research focuses on numerical modeling of electromagnetic transients in power systems, with particular emphasis on the development of advanced numerical methods for analyzing electromagnetic transients in multi-conductor transmission lines. His work includes the application of finite element techniques for transient stability analysis of power systems, as well as the enhancement of models for harmonic and transient analysis of grounding systems.