With　the　increasing　penetration　of　distributed　generations　(DGs)　in　three-phase　distribution　networks,　the　traditional　radial　passive　distribution　networks　are　gradually　transformed　into　active　distribution　networks　(ADNs)　with　DGs,　accompanied　by　a　dramatic　increase　in　operational　scenarios.　To　fast　analyze　the　massive　scenarios　of　ADNs,　this　brief　proposes　a　multi-scenario-based　power　flow　analytical　method　based　on　the　multi-dimensional　holomorphic　embedding　method.　First,　DGs　are　partitioned　according　to　their　spatial　correlation,　and　then　a　power　flow　analytical　method　is　cast　for　unbalanced　three-phase　ADNs.　Finally,　the　method　is　applied　to　the　ADN　power　flow　analysis　for　multiple　scenarios.　Comparisons　with　other　power　flow　calculation　methods　validate　the　high　efficiency　and　computational　tractability　of　the　proposed　method.　©　2004-2012　IEEE.