In　order　to　mitigate　the　hazards　of　arc　fault　occurring　in　neutral　non-effective　grounding　system,　two　arc-suppression　methods　based　on　cascaded　H-bridge　converter　were　proposed.　The　converter　in　shunt　in　the　distribution　network　produces　a　proper　current　to　compensate　for　the　fault　current,　which　results　in　zero　voltage　between　faulty　phase　and　ground.　The　implementation　of　proposed　methods　is　presented.　The　simulation　results　verify　the　methods　proposed　in　this　paper.