保护型馈线自动化原理及实现方案

2006年7月重庆大学学报(自然科学版)Ju.l2006第29卷第7期JournalofChongqingUniversity(NaturalScienceEdition)Vo.l29No.7:1000-582X(2006)07-0046-04*周念成,黄俊,赵渊,林明星(重庆大学电气工程学院高电压与电工新技术教育部重点实验室,重庆400030):提出了一种基于通讯的保护型馈线自动化方案.配电网络中相邻连接的保护单元相互交换带方向的故障信息,实现馈线故障快速切除,完成故障隔离和系统重构,瞬时性故障通过重合闸恢复供电.在光调制解调器(MODEM)中通过编码将通讯功能和电平(即故障标志)传输功能分开,故障标志传输不需要专用的通道.光MODEM之间的帧传送是自主的,相邻MODEM间能够快速地传送电平信号,实现了点对点的故障信息交换.提出的快速保护方案通过了动模实验,在实际配电系统中运行了2年,对有通讯通道的城市配电系统有实用价值.:馈线自动化;差动保护;故障隔离;系统重构;光调制解调器:TM77:A,[1].[2-8],[2],.,,.[4],,,(FTU),.,FTU,FTU;,.[5],,.[6]CAN,FTU,,,FTU,Polling;FTU,.[4],CAN.[7]LonWorks,,,LonSCADA,FTUSCADA,FTU,FTU.SCADA,FTU,,FTU,,.,,.,SCADA,,.[8],,,MODEM().MODEM,MODEM,,.MODEM,FTUSCADA.FTU.MODEM,*:2006-03-16:(1969-),,,,,..1保护型馈线自动化原理1.1配电网馈线系统保护原理,,2[3].[8].,(),,.12.MN2B.,d,2B,1,.MN,,4,11234.(1),(13B),12..11.2故障隔离,,.,.,.,!.1(d-g),d,2B,3B,.,,..211234MNMN,,t.,.1.3系统重构,.:,,.1(h),3B,5B,,5B3B,.1.4多分枝网络,,3,6B5.MN47第29卷第7期周念成,等:保护型馈线自动化原理及实现方案:M1B2B3B,N4B5B.MNMN.3,1B2B3B,,!,M!;4B5B,,N!.6B,6B,1,6B.3..,,!!.,MN,.,t,.2通讯解决方案2.1光MODEM的改进,,,MODEM.MODEM4.4MODEMMODEM5:1);2);3);4);5).MODEM6:,/,,,,.MODEM4.,,4,4.(TM)4,4,,,,2;(ADM)4,,,,,,.MODEM.MODEM,(1bit)Ex,,.MODEM,,32(85).MODEM.MODEM:1)9.4s.2)MODEM,MODEM,,MODEMFTUMODEM.3),,RS232.2.2数据通讯接口RS232C/RS422/RS485,.3.1)MODEM,.-,-,.2)3MODEM,1.MO48重庆大学学报(自然科学版)2006年DEM,.,1.3),.4),,100ms.3动模实验和实际运行,,5.51,6215211213.,UABUBC,PTB,.3.0P1P3P5P6P,,1.3621121!,521!.621521D1521121D2.D1D23:(5%)(50%)(95%),.,,.20034,,3(411∀631420∀632404∀624),420∀632404∀624,411∀631T,15.,.2.4结论,,,.,:1),,..2),,.3),,.,MODEM(100s),FTUSCADA.MODEMMODEM.4).:[1],,.[J].,2003,27(12):59-62.[2],,.[J].(),2004,27(11):30-33.[3],,.[J].,2002,26(12):73-78.[4].[J].,2001,25(9):42-44.[5]SHENKUNYUAN,GUJYHCHERNG.ProtectionCoordinationAnalysisofClosedloopDistributionSystem[Z].PowerCon2002InternationalConference,KunmingChina,2002.[6],,.[J].,2000,24(10):33-35.[7],,.CAN[J].,2000,24(19):47-49.[8]ZHOUNIANCHENG,ZHAOYUAN,JIAYANHAI,eta.lPrincipleandApplicationofSystemProtectionSchemetoDistributionNetwork[Z].2005IEEE/PESTransmissionandDistributionConference&Exhibition:AsiaandPacific,DalianChina,2005.(63)49第29卷第7期周念成,等:保护型馈线自动化原理及实现方案ModelBuildingandSimulationforSubcriticalPressureBoilerZHAOZhigang1,YANGChen1,LIYi2(College,1.PowerEngineeringofChongqingUniversity,Chongqing400030,China;2.ResearchInstituteofDongFangBoilerIncorporatedCompany,Zigong643001Chin)Abstract:Inordertomeetthedemandoflargescaleboilerdesignandoperatingoptimization,thispaperestablishesthedynamicmathematicmodelfordomestic600MWsubcriticalpressureboiler.MMSsoftwareisadoptedinthewholeprocessfrommodelingtosimulation.Thissoftwaremakeprocesssimpleandquick.Thismodelisbasedonmodularizationandthecomprehensivephysicalandchemicalprocessinboilerisconsidered.Simulationresultshowsthattheresponsesofthismodelunderdifferentdisturbancearecoincidenttomechanicsanalysis.ThesimulationresultunderstePdisturbancecanbeusedtoanalyzeunitchangesandprovidesomeguideanditalsocansupplyperformancereferencedatatoboilerdesign.Keywords:subcriticalpressureboiler,dynamicmode,lMMS,simulation(编辑陈移峰)(49)PrincipleandSchemeofaFeederAutomationBasedSystemProtectionZHOUNiancheng,HUANGJun,ZHAOYuan,LINMingxing(KeyLaboratoryofHighVoltageEngineeringandElectricalNewTechnology,MinistryofEducation,ElectricalEngineeringCollegeofChongqingUniversity,Chongqing400030,China)Abstract:AnewprincipleandschemeofaFeederAutomationbasedsystemprotectionusingthechannelofcommunicationisproposed.Theconjointprotectiondevicesexchangingfaultsignalwithdirectioninformationandthefaultcanbeclearedinstantly.TheseinformationcanhelPtoisolatethefaultzoneandrestructurethenetworkrapidly.Therecoverisusedforinstantaneousfaults.TheopticalMODEMdisjoinstheSCADAcommunicationandBooleansignalsfunctionsusingcodingtechnology.Sothefaultflagscanbeexchangedrapidlypeertopeerandspecialopticalcablesarenotneeded.FramesbetweenopticalMODEMaresentautomatically.Thisschemepresentedissuccessfulthroughphysicalsimulationexperimentandhasoperatedforabouttwoyearsinarealdistributionnetwork.Keywords:feederautomation;differentialprotection;faultisolation;restructurethenetwork;opticalmodulatordemodulator(编辑李胜春)63第29卷第7期赵志刚,等:600MW亚临界锅炉建模与仿真