Metodologia para Alocação Ótima de Para-raios em Linhas de Transmissão
Keywords: Transmission Line Surge Arresters, Atmospheric Discharge, Genetic Algorithm, General Variable Neighbourhood Search, Alternative Transient Program
AbstractThe application of transmission line surge arresters (TLSAs) is one of the main approaches found to boost the performance of overhead transmission lines (OHTLs) against atmospheric discharges. Thus, this work proposes a methodology for the optimal placement of TLSAs in OHTLs based on the combination of an optimization algorithm - inspired by General Variable Neighbourhood Search and Genetic Algorithm - and the ATP (Alternative Transient Program). The line performance estimation is made considering the little cited transfer effect of the atmospheric surge due to arresters operation. At the end, in order to analyze the functioning of the proposed procedure, experiments are carried out to optimize the positioning of TLSAs in two OHTLs. It may be inferred from the results that directing search considering the lightning surge transfer effect and favoring the positioning of TLSAs in the lowest phase(s) can reduce the amount of arresters necessary to satisfy the performance constraints, or at least diminish the application computational cost.