Journal
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
Volume 78, Issue -, Pages 80-87Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijepes.2015.11.094
Keywords
Optimal operation; Microgrids; Reliability evaluation; Uncertainty; ICA; MCS
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A Microgrid (MG) is a scaled down version of the centralized power system that generates, distributes, and regulates the flow of electricity and efficiently serves the local demand. It can operate either grid connected or islanded and, if required, can switch between two modes. In this paper the optimal operation of interconnected MGs considering market operation and network reliability based on MGs is discussed. In supposed structure of MGs, each MG is considered as small scale energy zone (SSEZ) and energy sources within MGs play a role of small scale energy resources (SSER). Because of unpredictable behavior of some SSERs and consumption power of MGs, the probabilistic analysis is impossible to ignore. So, the reliability evaluation is done under uncertain behavior of MGs components. Some recently introduced reliability indices in the literature for MGs are used to evaluate the MGs reliability. The reliability in the proposed paper is evaluated in two different structures of MGs. In first structure, the MGs are interconnected and in second structure, all MGs in islanded mode. The imperialist competitive algorithm (ICA) is applied to optimal power dispatch problem and the obtained results are compared by Monte Carlo Simulation (MCS) method. (C) 2015 Elsevier Ltd. All rights reserved.
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