The　most　widely　applied　doubly-fed　induction　generator　(DFIG)　leads　to　insufficient　frequency　regulation　ability　of　power　system.　The　virtual　inertia　control　can　adjust　the　active　power　of　DFIG　according　to　frequency　fluctuation.　However,　the　frequent　changes　in　power　flow　and　operating　point　bring　great　challenges　to　traditional　virtual　inertia　controller　with　fixed　parameters.　Direct　Heuristic　Dynamic　Programming　(Direct　HDP)　based　control　parameter　regulator　is　proposed　in　this　paper　to　obtain　the　optimal　control　parameters　when　the　operation　condition　changes.　Compared　with　the　initial　parameters,　the　response　has　been　significantly　improved　after　adaptive　optimization　by　the　proposed　method　when　the　system　operating　point　changes.　©　2022