The reconfiguration problem has the objective of finding the best radial topology in a Radial Distribution System (RDS) in order to, among other possible objectives, minimize the active power losses. This work proposes a new approach for the multiobjective reconfiguration of this type of network. The multiobjective reconfiguration in RDS's presents itself as a problem of combinatorial complexity, with numerous restrictions and diverse solutions. The reconfiguration technique is one of the most used because it is low cost, compared to other approaches to reduce technical losses. The proposed approach was tested using the NSGA-II multi objective Evolutionary Algorithm (AE) (Elitist Non-Dominated Sorting Genetic Algorithm). The approach proposed here was able to treat the infeasible solutions, specific to AE's, in the systems tested (33, 84 and 136 bars). It can be verified the efficiency and robustness of the methodology even for medium systems Resumo: O problema de reconfiguração tem por objetivo encontrar a melhor topologia radial em um Sistema de Distribuição Radial (SDR), de modo a, dentre outros possíveis objetivos, minimizar as perdas de potência ativas. Este trabalho propõe uma nova abordagem para a reconfiguração multiobjetivo deste tipo de rede. A reconfiguração multiobjetivo em SDR's apresenta-se como um problema de complexidade combinatória, com inúmeras restrições e soluções diversas. A técnica de reconfiguraçãoé uma das mais utilizadas por ser de baixo custo, frente a outras abordagens de redução de perdas técnicas. A abordagem proposta foi testada utilizando o Algoritmo Evolutivo (AE) multiobjetivo NSGA-II (Elitist Non-Dominated Sorting Genetic Algorithm). A abordagem aqui proposta foi capaz de tratar as soluções infactíveis, próprias de AE's, nos sistemas testados (33, 84 e 136 barras). Pode-se constatar a eficiência e robustez da metodologia mesmo para sistemas de médio porte.
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