Optimal placement of DG using multiobjective particle swarm optimization

In the future, distributed generation (DG) will play important role in power system network. A grid-connected distributed generation can be a good proposition if consumption of electricity is high. The position of DG effects many ways on power system network. Finding position of DG on power system network will be developed in this paper. An optimal placement of DG on the power system network is proposed by using multiobjective particle swarm optimization (MPSO) to minimize economic and emission costs of overall system. The MPSO is used to minimize simultaneously economic cost and emission of thermal units by changing sitting and varying sizes of DG. We employ IEEE 30 bus system to verify the proposed method. The results show that the proposed method found the optimal sitting and sizing of DG with minimum cost of economic and environmental pollution.