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MODELINGOFDIGITALPROTECTIVEDEVICEACCORDINGTOIEC61850ABSTRACTIEC61850ISANINTERNATIONALSTANDARDABOUTSUBSTATIONCONSTITUTEDBYTHESUBSTATIONIECTC57ITREFLECTSTHEDEVELOPMENTSDIRECTIONANDAUTOMATIONTENDENCYOFAUTOMATION,ANDAROUSESTHEWIDESPREADINTERESTOFTHEDOMESTICANDFOREIGNPOWERINDUSTRYTHETRANSFORMERISACOREEQUIPMENTINTHESUBSTATIONITSPROTECTION,MEASUREMENTANDCONTROLEQUIPMENTSARETHEMAINEQUIPMENTSOFSUBSTATIONAUTOMATIONSYSTEMTHEREFORE,ITISSIGNIFICANTFORUSTOAPPLYTHEIEC61850STANDARDTOTHEDIGITALTRANSFORMERSPROTECTION,MEASUREMENTANDCONTROLTHEBACKGROUND,THEDOMESTICANDFOREIGNPRESENTSITUATIONS,THESIGNIFICANCEANDTHECONTENTOFIEC61850AREINTRODUCEDINTHISPAPER,THEANALYSISOFIEC61850STANDARDSMODELINGPROCESSAREDESCRIBEDFIRSTLY,BASEDONTHEFUNCTIONFREEDISTRIBUTIONANDTHEASSIGNMENTCONCEPTOFIEC61850,THEPROTECTION,MEASUREMENTANDTHECONTROLUNITARESEPARATEDANDTHERESPECTIVEFUNCTIONISDESCRIBEBYTHELOGICALNODESECONDLY,ACCORDINGTOTHEMODELINGAPPROACHANDPRINCIPLEBASEDONIEC61850,THETYPICALPROTECTION,MEASUREMENTANDTHECONTROLLOGICALNODESARETAKENASEXAMPLESTOCOMPLETEMODELINGOFLOGICALNODESWITHUMLATLAST,THEFLOWCHARTOFTHEFUNCTIONREALIZATIONISDESCRIBEDANDTHEFLOWOFTHEFUNCTIONREALIZATIONISDISCUSSEDINTHISFOUNDATION,THETRANSFORMERDIFFERENTIALPROTECTIONIEDISTAKENASANEXAMPLETOSHOWTHECONFIGURATIONPROCESSOFITSLOGICALEQUIPMENTANDTHELOGICALNODEKEYWORDSIEC61850;UML;IED;OBJECTMODEL;LOGICALNODE;LOGICALEQUIPMENTSUBSTATIONAUTOMATIONSYSTEMBYMULTIPLESUBSYSTEMSISESSENTIALLYCOMPOSEDOFDISTRIBUTEDCONTROLSYSTEM,THEREFORELAYERINTHETRANSFORMERSUBSTATIONSTILL,THEINTERNALSYSTEMTHROUGHINTERNALDATACOMMUNICATION,TOREALIZETHESUBSYSTEMSBETWEENSUBSYSTEMSANDINTERNALINFORMATIONEXCHANGEANDSHARINGINFORMATION,TOREDUCETHESUBSTATIONSECONDEQUIPMENTCONFIGURATION,ANDSIMPLIFYTHEREPEATOFTHESUBSYSTEMSOFTHEINTERCONNECTIONS,NOTONLYREDUCEREPEATEDINVESTMENT,ANDALSOTOIMPROVETHESECURITYANDRELIABILITYOFTHESYSTEMASAWHOLEBUT,THEACTUALCIRCUMSTANCEOFEACHTRANSFORMERSUBSTATIONBERESPECTIVELYEACHPRODUCTSUPPLIERINORDERTOFIGHT,USAGEDISSIMILARITYOFCOMMUNICATIONCODEALMOSTEACHPRODUCEACOMPANYSHOULDTHECOMPANYALLHAVEASETOFONESELFOFSTANDARD,CAUSEINTHEWHOLESYSTEMCIRCULATEOFTHECODEMAYATTAINSEVERAL10KINDSEQUIPMENTSCANTSHAREINFORMATION,HARDASSURANCEOFTHECONSISTENCYOFDATATHISBEPROBLEMIN”AUTOMATIONISOLATEDISLAND”THISKINDOFPHENOMENONNOTONLYINCREMENTAGREATDEALOFCORRESPONDENCEAGREEMENTOFCODECONVERSIONANDEQUIPMENTSOFREPEATEDDEVOTION,RETURNWILLRESULTINCORRESPONDENCENOTDEPENDABLETHISOBVIOUSLYCANTSATISFYATRANSFORMERSUBSTATIONAUTOMATIONINNERPARTTHEINFORMATIONBEACCURATE,QUICKLYCOLLECTIONS,PROCESSINGWITHDELIVEROFREQUESTTHEREFORE,OURCOUNTRYOFTHETRANSFORMERSUBSTATIONAUTOMATIONBEURGENTDEMAND1KINDCANANDPERMITVARIOUSCORRESPONDENCEAGREEMENT,EXALTATIONPRODUCTWITHEACHOTHEROPERABILITY,REALREALIZATIONHAVENEVERSEWCORRESPONDENCEOFINTERNATIONALOFCORRESPONDENCEAGREEMENT12THETRANSFORMERSUBSTATIONAUTOMATIONDELIVERACODEANDDELIVERASTANDARDIZEOFNETWORK,ISREALIZATIONTHECREDIBILITYBEFASTCORRESPONDENCEOFASSURANCECORRESPONDENCEAGREEMENT12THETRANSFORMERSUBSTATIONAUTOMATIONDELIVERACODEANDDELIVERASTANDARDIZEOFNETWORK,ISREALIZATIONTHECREDIBILITYBEFASTCORRESPONDENCEOFASSURANCE20CENTURYTHEBEGINNINGOF90S,THEINTERNATIONALELECTROTECHNIQUESCOMMITTEEIECTHECOMMISSIONOFTHEINTERNATIONALELECTROTECHNICALBEAWAREOFTOCOMEFROMDISSIMILARITYFACTORYHOUSEOFTHEELECTRONICSINTELLIGENCEEQUIPMENTSIEDDEMANDASTANDARDOFTHEINFORMATIONCONNECT,WITHREALIZATIONEQUIPMENTSOFWITHEACHOTHEROPERABILITYINTEROPERABILITYISTHIS,IECTWOIECTC57OFTHETECHNIQUECOMMITTEEANDTHEIECTC95ESTABLISHEDACONSOCIATIONWORKSET,ESTABLISHMENT”AFTERELECTRICITYPROTECTIONTHEEQUIPMENTSINFORMATIONCONNECTSTANDARD“NAMELYIEC608705103STANDARDTHEINSTITUTEFORRESEARCHEPRITHERESEARCHINSTITUTEOFTHEELECTRICPOWEROFELECTRICPOWERSCIENCEOFTHEUNITEDSTATESIN1990BEGINNINGMRCOMMONLETTERSYSTEMUCATHEARCHITECTUREOFTHEUTILITYCOMMUNICATIONSTANDARDOFESTABLISHMENTWORK,ITSPURPOSELIEINPROVIDEAHAVEEXTENSIVEADAPTABILITYOF,THEFUNCTIONBESTRONGOFCORRESPONDENCEAGREEMENT,CANMAKEVARIOUSIEDPASSUSAGESHOULDAGREEMENTREALIZATIONWITHEACHOTHEROPERATION3FORAVOIDINGAPPEARTWOPOSSIBILITYCONFLICTOFSTANDARD,IECDECISIONWITHTHEUCA20DATAMODELKIMONODUTYISFOUNDATION,UCAOFRESEARCHRESULTBRINGINTOIECSTANDARD,INTHEMEANTIMEABSORBIEC608705103STANDARDOFIMPLICITDATAMODEL,ESTABLISHMENTUNIFYOFWORLDSCOPESTANDARDIEC61850,ANDIN1999MARCHPUTFORWARDCOMMITTEEDRAFTEDPLANEDITIONIEC61850BETHECORRESPONDENCENETWORKOFTRANSFORMERSUBSTATIONAUTOMATIONANDTHEINTERNATIONALSTANDARDOFSYSTEMESTABLISHMENTIEC61850MAINPURPOSESISMAKEDISSIMILARITYMANUFACTUREROFTHEPRODUCTHASWITHEACHOTHEROPERABILITYANDMAKETHESEPRODUCTDRIVEEXPEDIENTLYINTEGRATIONTOGOINASYSTEMACCORDINGTOIEC61850OFDEFINITION,WITHEACHOTHEROPERABILITYISCOMEFROMSAMEFACTORYHOUSEORDISSIMILARITYFACTORYHOUSEOFTHEIEDTHECOMMISSIONOFTHEINTERNATIONALELECTROTECHNICEXCHANGEINFORMATIONANDEXACTITUDEUSAGETHEINFORMATIONMODERATEOPERATIONOFABILITYIFTHEOFIEDCANCARRYONWITHEACHOTHEROPERATION,THENCONSTITUTETOFROMTHEIEDOFAUTOTHE,ANDSUBSYSTEMOFTHEBEGGARSYSTEMWITHADJUSTANOFONEDEGREECENTERWITHEACHOTHEROPERATIONPOSSIBILITYREALIZATIONWITHEACHOTHEROPERABILITYWITHINFORMATIONSHAREANDSYSTEMINTEGRATIO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