Placement of DGs in Distribution Network with Considering Protection Coordination Limits

The use of Distributed Generation (DG) units as small power generation units in distribution networks has received increasing attention during recent years. Distributed generation applications are growing due to environmental and economic issues, technological improvements, and privatization of power systems. Distributed generation application, however, has negative effects in protection coordination. Due to penetration of DG disturbs the radial nature of conventional distribution networks. Therefore, protection coordination will be changed in some cases, and in some other cases it will be lost. This paper proposes a Genetic Algorithm (GA) technique for the optimal placement of DG units in the distribution systems with considering protection coordination limits.