Procedure for protection of distribution feeder against induced voltages by indirect lightning

Abstract

Induced voltages by indirect lightning cause faults, damage to equipment and malfunctions to electric power systems, compromising the quality, continuity and reliability of the electrical energy supply. In this context, research development is crucial to improve lightning protection procedures, especially for electrical systems located in areas with high ground flash densities. This article presents the results of the application of a practical procedure for protection of the IEEE 13 Node Test Feeder against induced voltages by indirect lightning simulated with the Rusck model employing metal-oxide surge arresters. The results demonstrate the efficiency and practicality of the presented procedure regarding the technical specification and definition of the best allocation and amount of surge arresters for feeder protection, as well as the analysis of the sensitivity of the transformers and load facing the induced voltages.