A Multi Target Function for Ideal Siting and Sizing of Distributed Generation (DG) Systems using Particle Swarm Optimisation (PSO)

Different load centers where the energy is utilized are connected to the generating stations through high voltage transmission systems and a low voltage distribution systems. The losses occurring in the distribution network amount to nearly 40% of the total losses. Optimally located Distributed Generation (DG) systems offer multiple benefits in reducing the losses and supplying quality power. In this work a multi target formulation is suggest for ideal placement and capacity of the DG. The proposed formulation is optimized with Particle swarm optimization (PSO) Algorithm. Three constraints like power loss, voltage profile and thermal flow limits have been considered in the optimization. The approach is validated using an IEEE 69 Bus radial distribution system and the results proves the suitability of the proposed approach in diminishing the losses and improving the voltage profile of the network. A cost benefit analysis has also been incorporated to assess the suitability of different types of DG units.