International Journal of Distributed Energy Resources and Smart Grids Volume 11 Number 02 (2015) Pages 109 - 127 Manuscript received: 6. February 2015 Manuscript accepted: 23. June 2015 International Journal of Distributed Energy Resources and Smart Grids, ISSN 1614-7138, Volume 11 Number 02 © 2015 Technology & Science Publishers, Kassel, Germany, http://www.ts-publishers.com INTEGRATION OF DG AND CAPACITOR IN POWER DISTRIBUTION SYSTEMS Satish Kansal, Vishal Kumar, Barjeev Tyagi Department of Electrical Engineering * 1 Baba Hira Singh Bhattal IET Lehragaga, Distt. Sangrur (Punjab) 2, 3 Indian Institute of Technology Roorkee, Roorkee-247667 (INDIA) Email: kansal.bhsb@gmail.com vksaxfee@iitr.ernet.in btyagfee@iitr.ernet.in Keywords: Distributed generator (DG); PSO; optimal size and location; power loss. ABSTRACT In this work the optimal placement of DGs and capacitors has been proposed for power compensation by maintaining the concept of distribution generation against centralized generation. The placement of DGs and capacitors not only minimize the active power loss but also enhance the voltage profile of the distribution system to the great extent. The optimal locations and size of both DGs and capacitors have been determined by minimizing the power distribution loss. The sizes of DGs and capacitors are considered which are easily available on the market. The cases in which DGs and capacitors are placed on the same bus and at different buses are considered. The evaluation of optimal power factor has also been carried out in the same bus case. The analytical approach has been used to solve the optimal place- ment problem. The results obtained have been compared with Particle swarm opti- mization (PSO) approach results and also the other approaches result available in literature. The proposed approach is tested on 33-bus, and 69-bus test systems.