A　single-phase　ground　fault　in　the　stator　of　a　large　generator　may　produce　an　arc,　causing　core　burnout　or　even　serious　accidents　such　as　fire.　A　flexible　fusion　arc　suppression　method　is　proposed　to　achieve　ground　fault　current　suppression　and　reliable　arc　suppression　by　controlling　the　neutral　point　voltage　and　the　converter　injection　current　in　parallel.　The　existing　flexible　arc　suppression　method　for　generator　stator　single-phase　ground　fault　has　a　poor　arc　suppression　effect　under　low　or　high　resistance　conditions.　The　proposed　method　considers　the　stator　impedance　of　the　generator　and　the　number　of　stator　parallel　branches.　It　applies　to　different　generators　and　can　quickly　suppress　the　ground　fault　currents　to　a　safe　range　under　different　ground　fault　transition　resistances,　different　fault　locations,　and　so　on.　The　effectiveness　of　the　proposed　method　is　verified　by　Matlab/Simulink.　©　2024　Power　System　Technology　Press.　All　rights　reserved.