Microgrid architectures for low voltage distributed generation

The high penetration of distributed generators, most of them based on renewable energy sources, is modifying the traditional structure of the electric distribution grid. If the power of distributed generators is high enough to feed the loads of a certain area, this area could be disconnected from th...

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Bibliographic Details
Published in:Renewable & sustainable energy reviews 2015-03, Vol.43, p.415-424
Main Authors: Patrao, Iván, Figueres, Emilio, Garcerá, Gabriel, González-Medina, Raúl
Format: Article
Language:English
Subjects:
ac-bus
Architecture
Architectures
dc-bus
Distributed generation
Electric power distribution
Electric power generation
Energy storage
Generators
Microgrids
Renewable energy sources
Smart-grids
Stress concentration
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Summary:The high penetration of distributed generators, most of them based on renewable energy sources, is modifying the traditional structure of the electric distribution grid. If the power of distributed generators is high enough to feed the loads of a certain area, this area could be disconnected from the main grid and operate in islanded mode. Microgrids are composed by distributed generators, energy storage devices, intelligent circuit breakers and local loads. In this paper, a review of the main microgrid architectures proposed in the literature has been carried out. The microgrid architectures are first classified regarding their AC or DC distribution buses. Besides, more complex microgrid architectures are shown. Both advantages and disadvantages of each one of the microgrid families are discussed.
ISSN:1364-0321
1879-0690
DOI:10.1016/j.rser.2014.11.054