To　solve　the　problem　that　the　existing　arc　suppression　cabinet　and　flexible　voltage　arc　suppression　technology　do　not　consider　the　impedance　voltage　drop　of　the　fault　line,　a　novel　flexible　voltage　arc　suppression　method　by　voltage　suppression　at　fault　point　for　single-phase　grounding　fault　in　distribution　network　is　proposed.　The　voltage　drop　from　the　neutral　point　to　the　fault　point　is　calculated　by　injecting　compensating　current　twice.　Then　the　zero-sequence　voltage　is　controlled　to　this　voltage　drop　to　suppress　the　voltage　at　the　fault　point　to　zero.　In　order　to　prevent　the　increase　of　grounding　fault　current　caused　by　the　biannual　current　with　arbitrary　values,　the　flexible　current　arc　suppression　method　is　taken　as　the　transition　before　the　novel　flexible　voltage　arc　suppression　method　is　put　into　operation.　Considering　the　influence　of　false　selection　of　fault　phase,　a　novel　fault　phase　selection　method　is　proposed.　The　phase　relationship　between　the　zero-sequence　voltage　and　the　fault　phase　power　supply　voltage　after　the　single-phase　grounding　fault　is　calculated.　The　fault　phase　is　selected　by　phase　comparison.　Finally,　combining　with　the　advantages　of　flexible　voltage　arc　suppression　method　adapting　to　the　variation　of　line　parameters,　the　flexible　adaptive　arc　suppression　method　is　proposed,　which　is　mainly　based　on　the　novel　flexible　voltage　arc　suppression　method　and　takes　flexible　current　arc　suppression　method　as　a　short-term　pilot.　The　effectiveness　of　the　proposed　method　is　verified　by　simulative　results.　©　2022,　Electric　Power　Automation　Equipment　Press.　All　right　reserved.