Compared　to　conventional　units,　the　inherent　stochastic　nature　of　wind　power　requires　additional　flexibility　during　power　system　operation.　It　is　necessary　to　analyze　the　characteristics　of　wind　power　fluctuations.　Based　on　the　investigation　of　the　actual　operating　data　of　province,　this　paper　presents　a　comprehensive　analysis　of　the　wind　power　output　characteristics　from　different　dimensions,　including　daily　output　characteristics,　seasonal　output　characteristics　and　probability　distribution　of　wind　power　output.　The　research　results　could　be　available　to　predominate　wind　power　operation　characteristics　for　the　planning　and　scheduling　of　the　power　grid.　Analysis　shows　that　the　relevance　between　the　output　of　wind　power　and　the　time　is　weak.　And　the　fluctuation　of　hour-scale　wind　power　is　large,　while　summation　of　the　outputs　from　different　wind　farms　regional　apart　could　effectively　decrease　the　fluctuation　of　wind　power.　The　peak-valley　difference　also　will　be　increased　after　the　wind　farms　are　connected.　©　2019　Published　under　licence　by　IOP　Publishing　Ltd.