The　wind　power　fluctuation　puts　additional　burdens　on　the　power　system　dispatching　and　causes　extra　fluctuation　costs.　Due　to　the　smoothing　effect,　cooperation　of　the　wind　farms　reduces　the　total　fluctuation　costs　of　each　wind　farm,　while　leading　to　an　allocation　problem　of　the　fluctuating　costs.　This　paper　proposes　a　wind　power　fluctuation　cost　allocation　based　on　the　improved　Shapley　value.　Firstly,　the　equivalent　curve　of　a　wind　farm　is　obtained　in　the　＇equal-kWh　following　load＇　method.　With　this　curve,　the　waveform　similarity　index　is　designed　to　show　the　changes　of　the　load　tracking　of　the　wind　power,　reflecting　the　impacts　of　wind　power　fluctuation　of　the　farms　on　the　power　grid.　Secondly,　the　Shapley　value　method　is　used　to　preliminarily　allocate　the　total　fluctuation　costs.　Finally,　a　fluctuation　cost　allocation　index　combining　the　influences　of　the　load　tracking　changes　of　wind　power　and　the　generating　capacity　is　proposed　to　improve　the　allocation　results　by　using　the　Shapley　value.　The　proposed　allocation　strategy　with　the　improved　Shapley　value　considers　the　influences　of　various　factors　and　the　allocation　results　are　more　fair　and　reasonable,　which　verifies　in　this　paper.　©　2021,　Power　System　Technology　Press.　All　right　reserved.