The　power　flow　solution　calculated　by　the　existing　affine　power　flow　method　can　only　reflect　the　power　flow　distribution　of　the　system　in　a　certain　range　of　the　source　load　power,　which　is　difficult　to　meet　the　online　calculation　requirements　of　multi-scenario　uncertainty　analysis.　To　solve　these　problems,　an　affine　power　flow　multi-scenario　uncertainty　analysis　method　is　proposed　in　this　paper.　Various　holomorphic　embedding　variables　with　different　physical　meanings　are　used　to　scale　the　central　values　and　partial　deviation　coefficients　of　the　affine　injection　power.　In　this　way,　the　interval　variation　of　uncertain　injection　power　is　tracked　and　described,　and　the　analytical　dimension　of　the　affine　power　flow　is　expanded　from　one　dimension　to　multiple　dimensions.　The　calculation　of　affine　power　flow　is　divided　into　two　parts:　analytic　expression　solving　and　online　calculation.　The　multivariate　power　series　coefficients　of　affine　status　variables　are　solved　recursively,　and　the　analytical　expression　for　affine　power　flow　is　obtained.　The　online　calculation　of　affine　power　flow　in　specific　scenarios　is　realized　by　substituting　the　target　value　of　embedded　variables.　The　simulation　results　verify　the　advantages　of　the　proposed　method　in　convergence,　conservatism　and　multi-scenario　analysis　efficiency.　©　2025　Power　System　Technology　Press.　All　rights　reserved.