Biogeography based optimal placement of distributed generation units in distribution networks: Optimal placement of distributed generation units

Distributed generation (DG) plays a significant role in reducing real power loss, lowering the operating cost and improving the voltage profile. This paper formulates the DG placement problem as a multi-objective optimization problem and presents a solution method for optimally determining the node locations and sizing of multiple DG units in distribution networks using biogeography based optimization (BBO). BBO, inspired from the geographical distribution of biological species, searches for optimal solution through the migration and mutation operators. Test results on a 33-node distribution network reveal the superiority of the developed method.