Single　phase-to-ground　(SPG)　faults　in　distribution　active　networks　can　cause　serious　hazards,　such　as　fire　accident,　electrical　shocks,　and　power　outages.　Typically,　a　power　converter　is　connected　to　neutral　point　of　distribution　networks　to　suppress　fault　current　and　voltage　until　the　fault　arc　disappears.　However,　conventional　current-based　or　voltage-based　suppression　methods　alone　using　proportional-integral　control　(PIC)　cannot　adapt　to　uncertain　and　various　fault　resistances,　causing　a　long　transient　response　time　and　residual　fault　current　and　voltage.　This　paper　proposes　a　nonlinear　adaptive　control　(NAC)　design-based　SPG　fault　current　and　voltage　fusion　suppression　method.　The　designed　NAC　integrates　the　fault　current　and　voltage　suppression　theories,　and　considers　variable　and　unknown　fault　resistances.　Besides,　it　satisfies　Lyapunov＇s　asymptotic　stability.　Therefore,　the　proposed　method　can　better　suppress　fault　current　and　voltage,　and　adapt　to　various　fault　resistances.　Simulation　study　has　been　conducted,　and　the　results　demonstrate　that　the　fault　current　and　voltage　can　be　simultaneously　suppressed　with　a　shorter　transient　response　time,　and　the　residual　fault　current　and　voltage　is　smaller　than　that　of　the　PIC,　under　different　fault　resistances.　©　2025　IEEE.