Fault Characteristic Analysis of Single-Phase Grounding Fault in AC grid of Energy Router in Interacted and Interconnected Micro Grid

The energy router composed of double active bridge (DAB) can interconnect multiple voltage level AC distribution network through DC lines to form AC/DC hybrid network. fault types the system are diverse and characteristics complex. This paper studies in detail. single-phase grounding side valve occurred system. explored impact after above failure, make a detailed comparative analysis. results show that DAB isolate influence fault, provide theoretical basis for selection mode design protection