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DC fault current analyzing, limiting, and clearing in DC microgrid clusters

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journal contribution
posted on 05.10.2021, 08:47 by Navid Bayati, Hamid Reza Baghaee, Mehdi Savaghebi, Amin Hajizadeh, Mohsen N Soltani, Zhengyu LinZhengyu Lin
A new DC fault current limiter (FCL)‐based circuit breaker (CB) for DC microgrid (MG) clusters is proposed in this paper. The analytical expressions of the DC fault current of a bidirectional interlink DC/DC converter in the interconnection line of two nearby DC MGs are analyzed in detail. Meanwhile, a DC fault clearing solution (based on using a DC FCL in series with a DC circuit breaker) is proposed. This structure offers low complexity, cost, and power losses. To assess the performance of the proposed method, time‐domain simulation studies are carried out on a test DC MG clusterin a MATLAB/Simulink environment. The results of the proposed analytical expressions are compared with simulation results. The obtained results verify the analytical expression of the fault current and prove the effectiveness of the proposed DC fault current limiting and clearing strategy.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Research Unit

  • Centre for Renewable Energy Systems Technology (CREST)

Published in

Energies

Volume

14

Issue

19

Publisher

MDPI AG

Version

VoR (Version of Record)

Rights holder

© The authors

Publisher statement

This is an Open Access Article. It is published by MDPI under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

Acceptance date

01/10/2021

Publication date

2021-10-04

Copyright date

2021

ISSN

1996-1073

Language

en

Depositor

Dr Zhengyu Lin. Deposit date: 4 October 2021

Article number

6337