输气管道管存量差异性分析及预测技术

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Abstract：Pipelinestockisapartthatconsistsofnaturalgaspipelietransmisiondiferences.Toimprovethecalculationeficiency andaccuracyofpipelinestock，adynamicpipelinestockcalculationmethodwasproposedbasedonthefinitevolumemethod.Underthe conditionofiletpressurechangingwiththesinusodalfunction，acomparisonwas madebetweenthedynaicandsteady-statepipeline stockresults，whilethevarancesbetweethediferentresultswereanalyzed.Finall，theflowmechanismwascombinedwiththe operatingdatatoconstructadata-driven CNN-LSTMpipelinestock predictionmodel.Theresultsshowedthattheamplitudeof the dynamicpipelinestock wassmalerthanthatofthesteady-statepipelinestock，andthephaselaggedbehindthatofthesteadystate pipelinestock.Asthesinusoidalperiodisshorterandthesinusoidalamplitudeislarger，thecumulativedeviationandrelative transmissondiferenceofpipelinestockaregreater.Thedynamicpipelinestock，whichcouldrefletthegasfillngprocess，was scientficandasoable.Theanbsouterooteansuaeondetematiooeietoftepipelestickallation model in deviation mode were 1.29×104m3 0.51×104m3 ，and 0.990 6，respectively，better than the sequential mode.The research results canprovidea theoretical basisfor finemanagementofdailypipeline stock.

Keywords：steady-state pipeline stock; dynamic pipeline stock;data-driven;deviationmode;sequential mode

在我国“碳中和、碳达峰”战略目标的驱动下，石油天然气行业在能源结构上发生了重大变革，逐步形成了“以气为主，新能源并举”的能源转型策略。（剩余5915字）