A study on the fault characteristics of line fault in LVDC distribution system

Recently, the interest about Direct Current (DC) distribution system has been increasing constantly as the importance and need to renewable resources are emphasized. In common with existing AC system, especially, an analysis of fault in DC system is also important. However, fault in DC system might have different characteristic compared with conventional AC system due to the difference in configuration between two systems. This paper analyses the fault characteristic in DC distribution system considering two types of line faults. For the analysis, a simple DC distribution system is implemented using EMTP/ATPDraw. And then, the simulation according to the various fault conditions is conducted and the simulation results are presented.