Voltage Improvement and Power Loss Reduction for a Typical Sub-transmission region Using Optimally Placed and Sized Distributed Generation

Recent unbundling of Nigerian power holding companies into small units have created opportunities for involvement of independent power generation companies. Remarkable achievements and improvements are expected in power quality especially in the northern part of the country where power quality low is and serious power losses along the transmission and distribution lines of the power system are the norm. This paper proposes using particle swarm optimization (PSO) for allocation and sizing of Distributed Generation (DG) in Shiroro complex that supplies the northern part of Nigeria based on National Control Centre’s allocation using real data of the network. The study involves simulations for various load conditions in a power flow solutions. Based on the results the presence of DG in the network has greatly improved the voltage profile as well as power loss reduction in the region.