Open AccessInvestigation of different system earthing schemes for protection of low‐voltage DC microgrids
Author(s) -
Makkieh Ahmad,
Emhemed Abdullah,
Wang Dong,
JunyentFerre Adria,
Burt Graeme
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.9365
Subject(s) - microgrid , ground , transient (computer programming) , grid , computer science , electric power system , smart grid , fault (geology) , energy storage , distributed generation , electrical engineering , power (physics) , voltage , reliability engineering , engineering , renewable energy , physics , geometry , mathematics , quantum mechanics , seismology , geology , operating system
DC microgrids are expected to play an important role in maximising the benefits of distributed energy resources in future low carbon smart power systems. One of the remaining complex challenges is the requirement for effective DC protection solutions. The advancement of DC protection is hindered by the lack of good understanding and development of reliable and effective earthing schemes which can enable safe and secure operation of DC microgrids in both on‐grid and off‐grid modes. Therefore, this study discusses different DC microgrid earthing opportunities, and comprehensively evaluates through detailed simulation studies the influence of different earthing methods on the fault behaviour of DC microgrid. A transient model of an active DC microgrid is developed in PSCAD/EMTDC and used for the paper studies.