Analysis for the arc-suppression technologies of grounding fault in distribution networks

With the development of distribution networks and the increasing of capacitive current, the grounding fault arc is difficult to be extinguished which can easily generate fault over-voltage and lead to large scale power outage. The paper comprehensively compared different types of neutral grounding method in distribution networks. Based on the status of non-effectively grounded systems in our country, the most existing arc-suppression technologies are analyzed in this paper. Finally, the paper also makes prospect of the method of voltage arc suppression and SHBL technology in distribution networks.