Abstract—Optimum Distributed Generation (DG) placement and sizing is one of the current topics in new restructured power system. Most of the authors have worked out either DG unit placement or shunt capacitor placement as criteria for minimization of power system losses. However in the present paper, both approaches have been combined together to achieve overall minimum power losses and better voltage regulation. Particle Swarm Optimization (PSO) algorithm will be used for simultaneous finding of optimum DG and shunt capacitor bank location and size. The proposed algorithm will be tested on 12-bus, 30-bus, 33-bus and 69-bus radial distribution networks and the results will also be discussed in detail.

Index Terms—DG unit placement, shunt capacitor, particle swarm optimization (PSO), distribution system, power losses.

M. M. Aman is with NED University of Engineering and Technology, Karachi, Pakistan. He is also doing Ph.D. from University of Malaya (e-mail: mmohsin@neduet.edu.pk).
G. B. Jasmon and K. H. Solangi are with University of Malaya, Kuala Lumpur, Malaysia.
A. H. A. Bakar and H. Mokhlis are working under the Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia.