DG Allocation with Consideration of Costs and Losses in Distribution Networks Using Ant Colony Algorithm

Because of the great benefits of distributed generation (DG) resources, such as inexhaustible and nonpolluting, they have more influence in the power industry, especially in distributed networks. DGs such as photovoltaic panels, wind turbines, fuel cells and micro gas turbines, etc. are going to be used in demand side of power systems. Such DGs can decrease power losses if they are placed properly in the distribution networks. In this paper presents ant colony algorithm for optimal placement and sizing of DGs in radial distribution networks for the purpose of cost minimization. The objective function embraces the cost of power losses and installed DGs cost. By applying the proposed method, the economic cost and power losses are decreased to a considerable degree while enhancing the voltage profile. Algorithm to optimize the objective function written in Matlab and simulation results are investigated on a real case study from a section of Tehran distribution network consisting of 13 buses.