Alocação ótima de dispositivos de manobra e proteção para planejamento de sistemas de distribuição

Abstract

The present work presents a methodology for the expansion planning of medium voltage electric power distribution systems through the optimal allocation of maneuvering and protectionequipment. Theproposalfitsintotheplanningphaseassociatedwithmaximizing reliability in energy supply, with minimum investment cost. The meta-heuristic and bioinspiredoptimizationtechniquecalledartificialimmunologicalsystemsisproposedinorder to efficiently treatthe discrete characteristicof the equipment allocation problem. A clonal selection algorithm, which make use of the fundamentals of the cited technique considering thecharacteristicsofdistributionnetworks,isused. Distributionreliabilityindicesareused toevaluatethequalityofcandidatesolutions,togetherwiththerespectiveinvestmentcosts. Therefore, the possible solutions are evaluated by searching for an adequate compromise between reliability and cost, both criteria considered in the procedures of the distribution of electric power related to the expansion planning. Restrictions such as the presence of certaindevicesatpre-specifiedpointsinthenetworkareobservedandmet. Theequipments contemplated are disconnecting and interconnecting switches, manual or automatic, circuit breakers, reclosers and fuses. Case studies with four test systems from the specialized literature are presented.