With　the　enlargement　of　the　wind　farm　scale,　the　ability　of　accommodating　wind　powers　of　network　becomes　a　main　factor　of　wind　farm　planning.　This　paper　makes　a　scheduling　model　comprehensively　in　consideration　of　operation　cost　of　conventional　units　and　wind　curtailment　with　a　wind　power　acceptance　level　parameter　to　determine　the　optimal　level　of　wind　power　acceptance.　And　a　wind　power　acceptance　level　optimization　based　particle　swarm　algorithm　is　proposed　in　the　angle　of　the　economical　operation　of　conventional　units　and　wind　powers.　This　paper　calculates　in　a　system　with　one　wind　farm　and　10　conventional　units　and　works　out　the　optimal　level　of　wind　power　acceptance　respectively　of　the　12　groups　of　typical　output　data.　And　then　a　comprehensive　optimal　acceptance　level　is　determined　using　approaching　method　and　Newton　interpolation.　The　system　is　in　an　optimal　economic　operation　at　this　level　and　proportion　coefficient　can　be　a　reference　of　wind　power　planning.　©,　2015,　Power　System　Protection　and　Control　Press.　All　right　reserved.