Research on Arc-grounding Overvoltage in the 10 kV Distribution System

The using rate of cable which causes the capacitance current raise up out of limits in the urban distribution system is growing up very fast during the past years. It threatens the security of power-supply. In this paper, the author made lots of works analyze many methods of grounding through the natural point. The author also made the simulation models with EMTP/ATP program in theory and combine the fault of single-phase grounding in practice.