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Advances in Power Electronics
Volume 2012 (2012), Article ID 208231, 18 pages
Research Article

Analysis of a Microgrid under Transient Conditions Using Voltage and Frequency Controller

1Electrical Engineering Department, Maulana Azad National Institute (M.A.N.I.T), Deemed University, Bhopal (M.P.) 462052, India
2Electrical and Electronic Department of Engineering, Oriental college of science and technology (O.I.S.T), R.G.P.V University, Bhopal (M.P.) 462021, India

Received 24 May 2012; Revised 21 September 2012; Accepted 5 October 2012

Academic Editor: Pavol Bauer

Copyright © 2012 Monika Jain 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 presents an investigation of voltage-and-frequency-(VF-) based battery energy storage system (BESS) controller used in micro grid for analyzing the optimum capability of plant. Microgrid is formed by using three hydropower plants feeding three-phase four-wire load. The proposed controller is used for load balancing, harmonic elimination, load leveling, and neutral current compensation. The proposed BESS controller permits the selection of an optimum voltage level of battery and allows independent current control of each phase. The main emphasis is given on maintaining constant voltage and frequency within the micro grid during transient conditions. Micro grid with power plant and its controller is modeled in MATLAB/Simulink using Power System Blockset (PSB) toolboxes.