Renewable　energy,　distributed　generation,　and　micro-grid　technology　have　been　widely　concerned　for　a　long　time.　The　traditional　grid-connected　inverter　control　strategy　does　not　take　into　account　the　problem　of　inertia　which　is　short　and　fast　to　cause　the　frequency　change.　The　virtual　synchronous　generator　control　strategy　is　adopted　to　simulate　the　synchronous　generator　characteristics,　which　enhanced　the　inertia　and　damp　of　the　system.　For　the　micro-grid　of　wind　power　grid-connected,　the　storage　battery　is　arranged　on　the　AC　side　of　the　permanent　magnet　direct-drive　wind　turbine,　and　the　model　of　the　virtual　synchronous　generator　is　established.　Thus　the　grid-connected　performance　of　large-scale　wind　farm　is　improved.　Here,　the　effect　of　moment　of　inertia　in　the　virtual　synchronous　generator　and　the　grid-connected　regulation　of　virtual　synchronous　generator　are　verified　by　using　PSCAD/EMTDC.　The　simulation　results　show　that　the　grid-connected　inverter　controlled　by　the　virtual　synchronous　generator　is　approximately　equivalent　to　the　synchronous　generator　in　external　characteristic.　The　grid-connected　inverter　based　virtual　synchronous　generator　control　has　a　beneficial　to　adjust　frequency　and　voltage,　and　can　enhance　the　standby　inertia　of　new　energy　and　grid　power　generation.