第43卷第1期(2024-01)油气田地面工程https://yqtd.cbpt.cnki.net天然气集输处理大型并联天然气管网系统运行优化技术研究*刘恩斌1彭勇1杨毅2李长俊11西南石油大学石油与天然气工程学院2国家石油天然气管网集团有限公司油气调控中心摘要:某大型长距离并行管道系统结构复杂,其压气机站合建在一起,且进站口和出站口设置有联通管线和截断阀门,由于两条管线内流量能够自由分配,使得沿线不同站场可能出现双线联合运行、双线独立运行、单线压力越站、双线压力越站等多种复杂工况。为了减少大型并联管道系统能耗,构建了并联管道的优化运行模型,该模型以能耗最低为目标函数,考虑了压缩机自耗气、站场流量分配以及压力分配等多种约束,能够确定不同站场的运行方式,计算不同管线间的最佳流量分配。由于模型决策变量较多,采用一种改进的粒子群算法(PPSO)对模型进行优化计算,通过实践该算法获取的优化方案最好。研究结果表明:优化后,管道系统可降低能耗25.31%,对现场操作具有一定指导意义。关键词:天然气;并联管网;粒子群算法(PPSO);优化模型ResearchonOperationOptimizationTechnologyofLarge-scaleParallelNaturalGasPipelineNetworkSystem*LIUEnbin1,PENGYong1,YANGYi2,LIChangjun11PetroleumEngineeringSchool,SouthwestPetroleumUniversity2Oil&GasTransportationCenter,PipeChinaAbstract:Acertainlong-distanceparallelpipelinehascomplexsystem.Itscompressorstationsarebuilttogether,andtheinletandoutletofthecompressorstationareequippedwithinterconnectedpipelinesandshut-offvalves.Theflowinthetwopipelinescanbedistributedfreely,sothatdifferentstationsalongthelinemayhaveavarietyofcomplexconditions,suchasthejointoperationofthetwolines,theindependentoperationofthetwolines,thepressureexceedingthestationofthesingleline,thepressureexceedingthestationofthetwolines.Inordertoreducetheenergyconsumptionoftheparallelpipelinesystem,anoptimaloperationmodelofparallelpipelinesisestablishedinthispaper.Themodeltakesthelowestenergyconsumptionastheobjectivefunction,andconsidersvariousconstraintssuchascompressornaturalgasconsumption,stationflowdistribution,andpressuredistribution,soastodeterminetheoperationmodeofdifferentstations,andcalculatetheoptimalflowdi...