文档名：基于直流线路互联的区隧供电系统弹性恢复策略
摘要：在"双碳"目标下,以服务区光伏车棚、光伏隧道为代表的能源交通融合供电场景逐步普及,这使得形态开放且布局分散的区-隧供电系统在面临极端灾害或人为攻击时更为脆弱.为此,该文提出一种基于直流线路互联的区-隧供电系统弹性恢复策略.根据灾害前对直流线路的改造与韧性加固计划,首先,提出了基于直流线路被优先遍历的可行拓扑搜索策略,用于保障所提系统在极端灾害后的有效互联;其次,基于对故障负荷重要级权重的多层级分类策略,该文先后以重要负荷恢复量最大化和系统额外损耗最小化为目标构建了故障恢复目标函数,共同保证极端灾害发生后系统基于稀缺分布式能源的最大弹性恢复;再次,基于传统二阶锥松弛方法可能挣脱原始约束的缺陷,提出通过约束额外损耗中流经电流分量实现对混合整数二阶锥规划问题的收敛,确保所提模型在不同初始条件下的稳定适用;最后,通过涵盖区-隧供电系统的改进IEEE123节点配电网进行仿真,验证了所提策略的有效性.
Abstract：Torealizethegoalofenergytransition,ithasbecomeafuturetrendtofullydeveloptheavailablespaceresourcesofhighwaysandbuildacleanenergypowersupplysystem.Consideringthelimitationsofasinglepowersupplysystemandtheintermittencyofpowergeneration,district-tunnelpowersupply(DTPS)systemsthatincludemultipleserviceareasortunnelpowersupplysystemshavehigherreliability.However,duetothedualthreatsoftransportationandenergysystems,aswellasthedualfluctuationsofdistributedgenerationandtrafficloadelectricityconsumption,theproposedregionaltunnelpowersupplysystemhasahigherriskwhenfacingextremenaturaldisastersandhumanattacks.Expertsandscholarshaveconductedresearchontheresilienceofmulti-areasystems.However,existingrecoverystrategiesareallimplementedunderradialconstraints,whichoftenleadstothewasteofscarcedistributedresources.Toaddresstheseissues,thispaperproposesanelasticrecoverystrategybasedonDClineinterconnection.First,basedonthepre-disasterDClinerenovationandreinforcementplan,adeepprioritytraversalstrategyforDClinesisproposedtoensureeffectiveinterconnectionofthesysteminextremeevents.Second,basedonmulti-levelclassificationstrategy,atwo-stagefaultrecoveryobjectivefunctionisconstructedtoensuretherecoveryindexofthepowersystembasedonscarcedistributedenergyafterextremedisasters,includingpriorityrecoveryofimportantloadsandminimizationofadditionallosses.Inaddition,basedonthetraditionalsecond-orderconerelaxationmethod,aconvergencestrategyforsolvingmixedintegersecond-orderconeprogrammingproblemsisproposed,whichcanovercomethelimitationsoforiginalconstraintsandensurethestableuseoftheproposedmodelunderdifferentinitialconditions.Final,theimprovedIEEE123-nodepowersupplysystemcoveringDTPSsystemscenariosverifiedthestableapplicabilityoftheproposedstrategy.Theverificationresultsindicatethatalthoughthetotalpoweroutputofthesystemunderasinglepowersupplytopologyislimited,comparedwithtraditionalrecoverystrategies,theproposedstrategycanstillimprovetheelasticityindexby30.91%andshortentherecoverytimeby0.11h.Inamultipowertopology,theproposedrecoverystrategycanrecoverloadswithhigherweightfactorsandensurethemaximumutilizationofscarcedistributedenergy,therebyincreasingthesystemelasticityindexby40.09%andshorteningtherecoverytimeby1.29h.Inaddition,comparedtotraditionalrecoverystrategieswheresuddenchangesmayleadtoanincreaseordecreaseintherecoveryindex,theproposedstrategyalwaysensuresastableandhighrecoveryindex.Insummary,thefollowingconclusionscanbedrawn:(1)Comparedtotraditionalfaultrecoverystrategies,thetopologystructurebasedonDClineinterconnectioncaneffectivelyimprovethefeasiblesolutionspaceofthesystem,andreducetheinstallationcostofthesystemthroughtargetedreinforcementplans.(2)Theproposedfaultrecoverystrategyissignificantlysuperiortotraditionalstrategiesintermsofrecoveryindexandrecoverytime.(3)TheproposedresiliencerecoverystrategyremainsstableunderdifferentinitialconditionsandcanbeextendedtohybridAC/DCmicrogrids.
作者：孔惠文 马静 程鹏 贾利民 Author：KongHuiwen MaJing ChengPeng JiaLimin
作者单位：新能源电力系统全国重点实验室(华北电力大学)北京102206;国家能源交通融合发展研究院(华北电力大学)北京102206新能源电力系统全国重点实验室(华北电力大学)北京102206国家能源交通融合发展研究院(华北电力大学)北京102206国家能源交通融合发展研究院(华北电力大学)北京102206;轨道交通控制与安全国家重点实验室(北京交通大学)北京100044
刊名：电工技术学报
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(7)
分类号：TM619
关键词：区-隧供电系统 直流线路互联 深度优先遍历 弹性恢复
Keywords：District-tunnelpowersupplysystem DClineinterconnection depth-firsttraverse resiliencerecovery
机标分类号：TM73TP393TM910
在线出版日期：2024年4月12日
基金项目：国家重点研发计划基于直流线路互联的区-隧供电系统弹性恢复策略[
期刊论文] 电工技术学报--2024, 39(7)孔惠文 马静 程鹏 贾利民在"双碳"目标下,以服务区光伏车棚、光伏隧道为代表的能源交通融合供电场景逐步普及,这使得形态开放且布局分散的区-隧供电系统在面临极端灾害或人为攻击时更为脆弱.为此,该文提出一种基于直流线路互联的区-隧供电系统弹...参考文献和引证文献
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基于直流线路互联的区-隧供电系统弹性恢复策略 Resilience Recovery Strategy for District-Tunnel Power Supply System Based on DC Line Interconnection
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