A Comprehensive Survey on Advancement and Challenges of DC Microgrid Protection

Abstract

Extensive research has been conducted on protecting alternating current (AC) power systems, resulting in many sophisticated protection methods and schemes. On the other hand, the natural characteristics of direct current (DC) systems pose many challenges in designing a proper protection scheme for DC microgrids (DC-MG). This paper highlights the significant challenges facing the design of effective protection methods for DC microgrids. Furthermore, several technologies and techniques presented in the literature to overcome the challenges associated with DC microgrid protection are presented in this paper. These methods are comprehensively and comparatively analyzed. In addition, some potential issues of DC microgrid protection that need further investigation in future research are highlighted.