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Energies 2019, 12(6), 1001;

System Configuration, Fault Detection, Location, Isolation and Restoration: A Review on LVDC Microgrid Protections

Department of Electrical and Electronic Engineering, Glasgow Caledonian University, Glasgow, G4 0BA, UK
Department of Electrical Engineering, University of Engineering and Technology, Lahore (RCET Campus), 54890, Pakistan
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electricity Power University, 071003, China
Author to whom correspondence should be addressed.
Received: 9 January 2019 / Revised: 5 March 2019 / Accepted: 10 March 2019 / Published: 14 March 2019
PDF [1534 KB, uploaded 14 March 2019]


Low voltage direct current (LVDC) distribution has gained the significant interest of research due to the advancements in power conversion technologies. However, the use of converters has given rise to several technical issues regarding their protections and controls of such devices under faulty conditions. Post-fault behaviour of converter-fed LVDC system involves both active converter control and passive circuit transient of similar time scale, which makes the protection for LVDC distribution significantly different and more challenging than low voltage AC. These protection and operational issues have handicapped the practical applications of DC distribution. This paper presents state-of-the-art protection schemes developed for DC Microgrids. With a close look at practical limitations such as the dependency on modelling accuracy, requirement on communications and so forth, a comprehensive evaluation is carried out on those system approaches in terms of system configurations, fault detection, location, isolation and restoration.
Keywords: DC Microgrids, DC faults, DC protection, circuit breakers DC Microgrids, DC faults, DC protection, circuit breakers
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Javed, W.; Chen, D.; Farrag, M.E.; Xu, Y. System Configuration, Fault Detection, Location, Isolation and Restoration: A Review on LVDC Microgrid Protections. Energies 2019, 12, 1001.

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