Arc fault detection in DC microgrids

Abstract

Compared to conventional AC grids, DC microgrids demand different switchgear and safety concepts. Electric arcs across mechanical contacts of circuit breakers during switching operations and also arc faults within the installation are more stable in the case of continuous current. Model based methods are important tools not only for selecting the appropriate method of converter control, but also for analyzing the boundary conditions for faults and to develop reliable arc fault detection devices.