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Hassan Bevrani

Hassan Bevrani

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 55913436700
Faculty: Faculty of Engineering
Address: Dept. Of Electrical and Computer Eng, University of Kurdistan, Allameh Hamdi Blvd, Sanandaj PO Box 416, P. C: 66177-15175, Kurdistan, Iran
Phone: +98-87-33624001

Research

Title
An Emergency Active and Reactive Power Exchange Solution for Interconnected Microgrids
Type
JournalPaper
Keywords
Back-to-back converter , emergency control , generalized droop control , Interconnected microgrids , power exchange
Year
2021
Journal IEEE Journal of Emerging and Selected Topics in Power Electronics
DOI
Researchers Hassan Bevrani ، Frede Blaabjerg ، Tomislav Dragicevic ، Qobad Shafiee ، Yusef Khayat ، Mobin Naderi

Abstract

In this paper, an important application of Interconnected microgrids (IMGs) is presented in order to handle an emergency condition of individual microgrids (MGs), which causes an intolerable voltage magnitude or frequency deviation. In this method, the active and reactive powers are exchanged via an interlinking back-to-back converter (BTBC) and in accordance with voltage magnitude and/or frequency differences of individual MGs. In order to increase the IMG reliability and overcome the communication challenges, only local voltages and frequencies of both AC sides of the BTBC are used to determine the required active and reactive powers to be exchanged. A generalized droop control is employed to consider the impact of voltage magnitude and frequency differences on exchanging active and reactive powers separately for any type of interlinking lines. In this emergency power exchange method, a logical control is employed to detect the emergency condition, which results in the IMG formation, as well as to detect the normal condition and form the individual MGs operation again. The real-time results, obtained from OPAL-RT simulator, practically show advantages of the proposed method including voltage and frequency supports, postponing the load shedding, plug-and-play capability, good power sharing between the IMGs and method compatibility with the controls of individual MGs.