Traditional　phase　selectors　are　inapplicable　in　wind　power　integration　because　the　fault　characteristics　of　wind　power　system　are　quite　different　from　those　in　regular　grids.　A　novel　phase　selector　in　time　domain　for　wind　power　integration　based　on　phase　voltage　transient　characteristics　is　proposed.　Through　theoretical　analysis,　it　is　found　out　that　the　correlations　between　phase　voltage　transient　characteristics　for　different　fault　types　are　quite　different.　And　phase　selection　criteria　based　on　correlation　coefficient　are　constructed　accordingly.　The　novel　principle　of　phase　selection　adopts　voltage　waveforms,　thus　not　affected　by　week　in-feed　characteristic　of　wind　power　system.　In　addition,　the　principle　adopts　transient　voltages　in　time　domain,　thus　immune　to　the　unstable　impedance　of　wind　power　system.　PSCAD　simulations　and　the　field　fault　records　of　wind　power　integration　verify　the　effectiveness　of　the　novel　phase　selection　principle.　©,　2015,　Power　System　Technology　Press.　All　right　reserved.