厂站数据接入pi系统的研究

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1、塑坚-大兰堡圭兰些堡塞TheStudyonIntegratingSubstationQuasiRealTimeDataintoPISystemAbstractInOrdertofacilitatedata-processingwithcomputer,thefirststepinpowersysteminformationintegrationiStoconvertsubstationopermionparametersintOdigitalsignal．SOkindsofintelligentelectronicdevices(IE

2、D)oreinwoducedintothesubstation．NOWtheseIEDcanprovidevariousdataforpowersystemoperation，andpossesstheabilitytotransmissiontheirdatatotheremotecontrolcenter．Howeever,alorgenumberofIEDdatacannotbeusedemciently，thatiStheSO—called“Islandofhlformation”problem．Thereoremainlyt

3、wofactorsresultingiOtheinformationwaste：theabsenceofdatabasewhichCanstoreallthesubstationdatamakesdata．sharingdifficult；ontheotherhand，thevarietyofprotocolswhichIEDconformtocomplexthedata—acquisitionsystem．TheuseofPlantInformation(P1)systeminPowersystemeliminatesthefirs

4、tfactoLthatis．thePIsystemactsasaunifieddataintegrationplatformholdingallsubstationdata．TllispaperistobridginglEDandthePIsystem．TheseamlesscommunicationofpowersystemiSbasedontheIEC61850Standordinthefuture．SOoursubstationdata-acquisitionsystemiSdesignedtoabideIEC61850andb

5、asedoncommoninformationmodel(CIM)．ThewholesystemconsistsofsevernlslavestationsinstalledinsubstationsandamasterstationlOCatedincontrolcenteLneslavestationperformsdata-acquisition&model-translationfunction．ThemasterstationmanagesallslavestationsandpassesIEDdataintoPIsyste

6、m．Thesubstationdata-acquisitionsystemnotonlyhastraditionaldataacquisitionandcommunicationfunctions，butalSOsatisfiesdata．integrityandreal-timerequirementsinpowersysteminformationintegration．Keywords：Dataacquisition；EmbeddedSystem；RealTimeOperatingSystem；QuasiRealTimeInfo

7、rmation；IntelligentElectronicDevices；PlantInformationsystem；IEC61850；CommonInformationModel；．Ⅱ．浙江大学硕上毕业论文1．1课题的提出第一章绪论电力系统是一个动态性很强的系统，电能从生产到消耗应时刻保持平衡。同时，在电力生产过程中还要考虑电能质量、电网安全等多方面的因素。实现以上控制的前提是必须充分了解电力系统当前的运行状态，需要对现场的运行数据进行监视。数据采集与监控系统(SCADA)在电力系统中应用最为广泛，技术发展也最为成熟，它充当了电力

8、系统自动化的实时数据源，为电力系统的运行与控制提供了大量的实时数据。就目前的情况来看，SCADA系统的数据采集和监视功能是非常强大的，已经能够提供绝大多数运行数据。但其存储实时／历史数据的能力还相对欠缺，表现在：SCAD