Estudo da aplicação da teoria de Rusck e de modelos probabilísticos ao cálculo de tensões induzidas por descargas atmosféricas

Abstract

In 1957, Sune Rusck proposed an expression to calculate the induced voltage over an infinite line due to a lightining that strikes the ground on its vicinity. This expression and the suppositions made during its development were criticized along the years by many authors. In 1990, Lopes presented an algorithm that extended the application of Rusck's expression to finite multi-earthed lines. The algorithm was implemented and reduced model measurements comparisions (Boaventura 1990) were done. Based on this algorithm and on the application of Monte Carlo method to lightining parameters data, this work simulates the behavior of a real line and compares these results with measurements made in this line for two years. This algorithm was implemented and comparisions with reduced model measurements were made. The main conclusion of this work is that Rusck's theory has satisfactory results for lightining induced voltage calculation. In addition, the method and computer program proposed on this work proved to be valid tools for lightining performance studies.