Producing　hydrogen　through　water　electrolysis　using　renewable　energy　is　a　key　technology　to　achieve　energy　transformation　and　electricity　decarbonization.　However,　power　fluctuation　and　frequent　start-stop　are　major　factors　causing　the　operating　life　decay　of　alkaline　electrolyzer.　Therefore,　based　on　the　analysis　of　the　operation　characteristics　of　the　electrolyzer　monomer,　an　optimal　scheduling　model　of　the　electricity-hydrogen-heat　integrated　energy　system　considering　the　combined　operation　of　multi-electrolyzers　under　multiple　operating　conditions　is　proposed.　A　two-stage　robust　scheduling　model　is　established　to　deal　with　the　working　mode　switching　of　the　electrolyzer　and　energy　storage　system　during　the　real-time　scheduling　stage　caused　by　wind　power　uncertainty,　which　is　solved　by　the　nested　column　and　constraint　generation　algorithm.　The　simulation　experiments　are　carried　out　under　four　different　scenarios,　and　the　results　show　that　considering　the　flexible　combination　of　multi-electrolyzers　and　the　rapid　switching　of　operating　conditions　during　the　real-time　scheduling　stage　can　improve　the　operational　economy　of　the　system　and　effectively　alleviate　the　degradation　of　operating　life　caused　by　the　power　fluctuation　of　the　electrolyzer.　©　2025　Power　System　Technology　Press.　All　rights　reserved.