Stochastic Risk and Reliability Assessments of Energy Management System in Grid of Microgrids under Uncertainty

  • Nima Nikmehr Smart Distribution Grid Research Lab, Department of Electrical Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran http://orcid.org/0000-0001-9569-3070
  • Sajad Najafi-Ravadanegh Smart Distribution Grid Research Lab, Department of Electrical Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran

Abstract

As various renewable energy resources (RERs) are exploited within microgrids (MGs), some important challenges havearisen as regards coping with generation fluctuations. This paper proposes a probabilistic method aimed at achieving optimalcoordinated operation in a grid of microgrids under uncertainties of RERs and variable load demand. In the supposed structurebased on networked microgrids (NMGs), a two-level strategy is required for guaranteeing efficient coordination between theMGs and distribution network operator (DNO). Another contribution of the paper deals with the flexibility of NMGs in improvingthe reliability of the whole system. Additionally, the value at risk (VaR) calculations for output results are carried out for differentconfidence levels with two important methods. In sum, the aim of the paper is to minimize total energy costs considering theenvironmental effects. To achieve this purpose, the Imperialist Competitive Algorithm (ICA) as a heuristic algorithm is appliedto solve the optimal power dispatch problem and the obtained results are compared using the Monte Carlo Simulation (MCS)method. As the input data are modeled under uncertainties, the output results are described with probability distributionfunction (PDF).

Author Biography

Sajad Najafi-Ravadanegh, Smart Distribution Grid Research Lab, Department of Electrical Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran
Associate Professor at Azarbaijan Shahid Madani University

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Published
2017-11-01
How to Cite
NIKMEHR, Nima; NAJAFI-RAVADANEGH, Sajad. Stochastic Risk and Reliability Assessments of Energy Management System in Grid of Microgrids under Uncertainty. Journal of Power Technologies, [S.l.], v. 97, n. 3, p. 179--189, nov. 2017. ISSN 2083-4195. Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/999>. Date accessed: 14 july 2024.
Section
Renewable and Sustainable Energy

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