Journal
IEEE ACCESS
Volume 7, Issue -, Pages 72158-72169Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2019.2920008
Keywords
Smart grid; microgrid (MG); interconnected multi-microgrids (IMMG); energy sharing; energy management
Categories
Funding
- NSF of China [51607087]
- Fundamental Research Funds for the Central Universities of China [XCA17003-06]
- U.S. NSF [DMS-1736470]
- Wireless Engineering Research and Education Center (WEREC), Auburn University, Auburn, AL, USA
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An interconnected multi-microgrids (IMMGs) system takes advantage of various complementary power sources and effectively coordinates the energy sharing/trading among the MGs and the main grid to improve the stability, reliability, and energy efficiency of the system. The core of this structure is to achieve the optimal distribution of energy sharing through proper strategies. However, the volatility and intermittent characteristics of renewable resources, time-varying loads in the MGs, their correlated power generations, and the coupled energy among the MGs during energy trading, all bring about new challenges to achieving a stable operation and optimal scheduling in the power system. Many solutions have been proposed to solve these problems. In this paper, we provide an overview of the current energy management systems (EMS) in IMMGs, focusing on the IMMG structure, EMS objectives, timescales, and scheduling optimization structure. We then provide a review of the distributed optimization algorithms in IMMGs. We conclude this survey with a discussion of future directions.
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