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Journal of Control Science and Engineering
Volume 2016 (2016), Article ID 5710950, 9 pages
http://dx.doi.org/10.1155/2016/5710950
Research Article

Real-Time Implementation of Islanded Microgrid for Remote Areas

1Department of Electrical Engineering, Maulana Azad National Institute of Technology (MANIT), Bhopal 462003, India
2Department of Electrical & Electronics Engineering, Oriental Institute of Science & Technology (OIST), Bhopal 462021, India

Received 9 November 2015; Revised 6 February 2016; Accepted 15 February 2016

Academic Editor: Qiaoling Tong

Copyright © 2016 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.

Abstract

Islanding is a condition in which a microgrid or a portion of power grid, consisting of distributed generation (DG) sources, converter, and load, gets disconnected from the utility grid. Under this condition the DG sources in a microgrid must switch to a voltage control mode, in order to provide constant voltage to local loads. In grid connected mode, the microgrid works as current controller and injects power to the main grid, depending on the power generation and local load with suitable market policies. Providing constant voltage at a stable frequency with proper synchronization amongst each DG in a microgrid is a challenge. The complexity of such grid requires careful study and analysis before actual implementation. These challenges of microgrid are addressed using real time OPAL-RT simulation technology. Thus the paper describes an islanded microgrid with master slave controller for power balance, voltage/frequency regulation, and synchronization. Based on an advanced real-time platform named Real-Time Laboratory (RT-LAB), the impacts of the micro sources, load, and converters in an islanded microgrid is studied in this paper. The effectiveness of the proposed controller is analyzed through experimental results under balanced/unbalanced nonlinear loads condition.