Challenges, advances and future directions in protection of hybrid AC/DC microgrids

Hybrid microgrids which consist of AC and DC subgrids interconnected by power electronic interfaces have attracted much attention in recent years. They not only can integrate the main benefits of both AC and DC configurations, but also can reduce the number of converters in connection of distributed...

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Bibliographic Details
Published in:IET renewable power generation 2017-10, Vol.11 (12), p.1495-1502
Main Authors: Mirsaeidi, Sohrab, Dong, Xinzhou, Shi, Shenxing, Tzelepis, Dimitrios
Format: Article
Language:English
Subjects:
AC buses
AC subgrids
converters
DC buses
DC subgrids
distributed generation sources
distributed power generation
energy storage systems
hybrid AC‐DC microgrid protection
power electronic interfaces
power generation protection
protection devices
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Summary:Hybrid microgrids which consist of AC and DC subgrids interconnected by power electronic interfaces have attracted much attention in recent years. They not only can integrate the main benefits of both AC and DC configurations, but also can reduce the number of converters in connection of distributed generation sources, energy storage systems and loads to AC or DC buses. In this study, the structure of hybrid microgrids is discussed, and then a broad overview of the available protection devices and approaches for AC and DC subgrids is presented. After description, analysis and classification of the existing schemes, some research directions including communication infrastructures, combined control and protection schemes, and promising devices for the realisation of future hybrid AC/DC microgrids are pointed out.
ISSN:1752-1416
1752-1424
1752-1424
DOI:10.1049/iet-rpg.2017.0079