Analysis of induced voltages of double-feed transmission line system regarding to safety demands

Abstract

The safety of the operator of the disconnected three-way dual-system line directly depends on the amount of induced voltages at the work site. The most dangerous of all cases is the one when a single-pole short circuit occurs on the triple that is in operation. During this time, the disconnected triple is grounded on both sides and additionally grounded at the place of work. In order to determine the safety of the contractor working on the disconnected triple of the two-system line, it is necessary to calculate the induced voltages along the transmission line in the event of a single-pole short circuit on the triple that is in operation. We calculated the induced voltages using a program specially developed for this purpose, based on the finite element method.

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.

Rino Lucić

Full Professor

Dr. sc. Rino Lucić is a retired professor from the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split. Throughout his career, he taught courses at all study levels and actively participated in the realization of numerous scientific-research projects. As an author or co-author, he has published 41 scientific papers and 16 professional articles, with research interests spanning numerical modeling, transmission lines, finite element method, and power system transient analysis.