Utilizing　renewable　energy　for　hydrogen　production　and　blending　it　into　natural　gas　networks　is　recognized　as　a　promising　approach　to　promote　a　low-carbon　transformation　of　power　systems　and　enhance　the　integration　of　renewable　energy　sources.　However,　the　temporal　and　geographical　availability　of　renewable　energy　and　natural　gas　operation　conditions　vary　greatly,　emphasizing　the　importance　of　precise　planning　and　operational　strategies　for　the　renewable　energy-hydrogen-natural　gas　coupling　system.　This　article　introduces　a　smart　design　and　operational　strategy　for　a　wind　electricity-hydrogen-natural　gas　coupling　system　aimed　at　enhancing　renewable　energy　accommodation.　The　primary　objectives　are　to　evaluate　the　technical　and　economic　feasibility　of　such　coupling　systems　and　to　determine　the　optimal　planning　and　operation　strategies　for　hydrogen　production,　transportation,　and　blending　into　natural　gas　networks　while　minimizing　total　investment　and　operational　costs.　By　utilizing　real　curtailed　electricity　data　and　natural　gas　pipeline　network　operating　flow　rate　data,　the　potential　of　this　coupling　system　to　enhance　renewable　energy　accommodation　and　reduce　carbon　emissions　is　explored.　The　results　indicate　that　this　optimized　coupling　system　can　accommodate　20.11%　of　curtailed　wind　electricity　and　reduce　carbon　emissions　by　1.05　billion　tons　per　year.　Additionally,　the　impact　of　hydrogen　blending　ratios　and　hydrogen　prices　on　the　economic　and　environmental　performance　of　the　coupling　system　is　also　investigated.　Improving　the　hydrogen　blending　ratio　is　the　key　to　enlarging　the　economic　and　environmental　performance　of　the　coupling　system,　but　the　hydrogen　sale　price　has　a　negligible　impact　on　the　renewable　energy　accommodation　and　environmental　performance　of　the　coupling　system.