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Modelling and Simulation in Engineering
Volume 2017, Article ID 2857926, 11 pages
Research Article

Optimal Allocation of DG and DSTATCOM in Radial Distribution System Using Cuckoo Search Optimization Algorithm

1School of Electrical Engineering, VIT University, Vellore, India
2Department of Electrical Engineering, MVJ College of Engineering, Bengaluru, India

Correspondence should be addressed to K. R. Devabalaji; moc.liamg@ijalabavedeee

Received 6 August 2016; Revised 24 September 2016; Accepted 30 January 2017; Published 19 February 2017

Academic Editor: Nikos D. Lagaros

Copyright © 2017 T. Yuvaraj et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper proposes a new approach to determine the optimal location and sizing of Distributed Generation (DG) and Distribution STATic COMpensator (DSTATCOM) simultaneously in the distribution network. The objective function is formulated to minimize the total power losses of the system subjected to equality and inequality constraints. Loss sensitivity factor (LSF) and Voltage Stability Index (VSI) are used to predetermine the optimal location of DG and DSTATCOM, respectively. Recently developed nature-inspired cuckoo search algorithm (CSA) has been used to determine the optimal size of both DG and DSTATCOM. In the present work, five different cases have been considered during DG and DSTATCOM placement to access the performance of the proposed technique. To check the feasibility, the proposed method is tested on IEEE 12-bus, 34-bus, and 69-bus radial distribution system and the results were compared with other existing techniques.