基于优化运行数据库的干线天然气管网优化研究

第38卷第09期（2019-09）油气田地面工程http://www.yqtdmgc.com储运工程基于优化运行数据库的干线天然气管网优化研究徐育斌1冷绪林2安云朋2刘少山2董平省21浙江浙石油储运有限公司2中国石油天然气管道工程有限公司摘要：天然气在输送过程中，运行能耗费用受各气源供气量、管网内天然气量分配、各管道运行压力、能耗单价及压缩机组类型等诸多因素的影响，因此有必要开展天然气管网优化运行的研究。以天然气管网运行能耗费用最低为目标，建立了天然气管网优化运行数据库，利用最小二乘法构建能耗方程组，建立管网内单条管道输气量与能耗之间的数学关系，制定优化逻辑，编制完成西部天然气管网优化运行软件，解决了天然气管网的气量优化分配问题，确定了天然气管网内各管道启机的优化方案。以西部天然气管网生产运行某日报表数据为基础，在相同的边界条件下，采用该管网优化运行软件重新分配全管网气量，并确定新的运行方案，对比分析优化前后的能耗数据，能耗费用节约在10%以上，取得了良好的优化效果。关键词：天然气管网；管网优化；运行数据库；能耗方程；能耗费用OptimizationStudyofTrunkNaturalGasPipelineNetworkBasedonOptimizedOpera⁃tionDatabaseXUYubin1，LENGXulin2，ANYunpeng2，LIUShaoshan2，DONGPingsheng21ZhejiangPetroleumStorage&TransportationCo.，Ltd.2ChinaPetroleumPipelineEngineeringCo.，Ltd.Abstract：Intheprocessofnaturalgastransportation，theenergyconsumptioncostisaffectedbymanyfactors，suchasgassupplyamount，thenaturalgasdistributionofpipelinenetwork，theopera-tionpressureofeachpipeline，theunitpriceofenergyconsumptionandthetypeofcompressorunit，sothereisroomforoptimizationanditisnecessarytocarryoutthestudyontheoptimaloperationofnaturalgaspipelinenetwork.Aimingatthelowestenergyconsumptioncostofnaturalgaspipelinenet-work，theoptimaloperationdatabaseofnaturalgaspipelinenetworkisestablished，theenergycon-sumptionequationsetisdevelopedbyusingtheleastsquaremethod，themathematicalrelationshipbe-tweenthegastransmissionamountandenergyconsumptionofsinglepipelineinthenetworkisestab-lished，andtheoptimizationlogicisformulated.Thesoftwareforoptimizingtheoperationofwesternnaturalgaspipelinenetworkisprogrammedtosolvethedistributionoptimizationproblemofthegasamountinthenaturalgaspipelinenetwork.Byusingthesoftware，theoptimalmachinestartingschemesofeachpipelineinthenetworkcanbedetermined.Basedontheproductionandoperationdai-lyreportdataofwesternnaturalgaspipelinenetwork，theoperationsoftwareofthepipelinenetworkisusedtoredistributethegasamountinthewholenetwork，andthenewoperationschemeisdeter-mined.Theenergyconsumptiondatabeforeandafteroptimizationarecomparedandanalyzed，theen-ergyconsumptioncos