Alocação ótima de dispositivos de proteção em rede de distribuição local

Abstract

The proposal of the work is the allocation of protection devices in the local electric power distribution network of 143 buses to optimize the reliability of the network in case of faults. The objective is to minimize the sum of Unsupplied Energy Costs (ENS) due to permanent and temporary faults and the costs of protection devices. The optimal allocation of protection devices makes it possible to improve network reliability and reduce ENS, bringing benefits to concessionaires and consumers. In the proposal, automatic reclosers were allocated to the main branches and fuses to the secondary branches, considering a planning horizon of ten years and ensuring selectivity and coordination between fuses. For the optimization of the problem, the genetic algorithm was used, whose objective function considered the minimization of the cost of the ENS and investments in equipment. In addition, the fuses allocated were sized from the calculation of the power flow generated in OpenDSS. At the end of this work, the results generated from the simulations were discussed and may help the local electric utility in the optimized allocation of protection devices with reliability and cost reduction.