An Overview in Protection Coordination Methods for Mitigation DGs Penetration in Distribution System. (Dept. E)

Abstract

the desire of the consumers for a cheap and reliable energy source in comparison to the large generators, DGs penetration increased as they have smaller capacities, cheap operating costs, low environmental pollution, high efficiency, voltage profile improvement, and enhance the capacity of the electrical grid [1,2].Despite the huge benefits gained from the penetration of DGs, the large penetration leads to conflicts in the protection system of distribution systems as the design of distribution networks is a radial network, and penetration of DGs changes the nature of the network [2].The protection system in the distribution network contains different types of protection devices such as overcurrent relays, and a combination of fuses, and reclosers. These devices are configured in the distribution network as the overcurrent relay is suited at the distribution system substations, reclosers are installed on main feeders, and fuses