Estudo e análise da coordenação e seletividade em proteções de redes de distribuição de média tensão rural

Abstract

The present work aimed to analyze the coordination and selectivity in rural medium voltage electricity distribution networks. The method used was the descriptive analytical, through the technique of bibliographic research and case study. For that, initially, concepts and modalities of distribution networks were presented. After that, the study of the problem was performed, that is, the lack of coordination and selectivity of the system. Finally, the conclusions and results obtained through the analysis of real cases were presented. The work was especially based on ANEEL and Permissionaire “X”. Given the large number of failures that affect the rural network systems, it was verified the importance of the analysis of practical cases, in order to maintain the reliability of the power distribution in these places. Therefore, simulations were performed of the coordination of the protection equipment of the current network and, subsequently, with the proposed improvements. It was also analyzed the technical and economic feasibility of these proposals, aiming at an estimated time for return on investment. Given the practical cases studied, it was realized that it is very important to coordinate and selectively protect the equipment of rural medium voltage distribution networks.