Document Type : Original Article
Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
Optimal placement and sizing of distributed generation (DG) is one of the important issues in the radial distribution system, playing a vital role in reduction power losses and total cost of the system. Optimal placement and sizing of DG have many advantages for the radial networks, which some of the important them are the reliability and voltage stability improvement, power loss and emission reduction. In this paper, Exchange market algorithm (EMA) as a new heuristic algorithm is used for solving multiple DG placement and sizing problem in the radial distribution system. EMA is consisted of two powerful searcher operators which are used to create and organize the random numbers of the initial population and it can be employed to find the optimum point in the optimization problems. In order to evaluate the purposes of this study, EMA is applied on three test systems, including 33, 69 bus IEEE test system and 94 bus Portuguese radial distribution system. The obtained numerical results of the optimization procedure are compared with recent studies in this regards and the resulting analyses indicated that the power losses in the radial network reduced to the minimum amount of ownership. The results also prove the effectiveness of the EMA as one of the powerful optimization tools in solving DG placement problem.