继电保护外文翻译.doc

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1、外文资料APPLICATIONOFTHETHEORYOFPATTERNRECOGNITIONINDEVELOPINGRELAYPROTECTIONANDCONTROLV.E.GLazyrinNovosibirskStateTechnicalUniversityReliableandtimelyrecognitionofemergencystatesinelectricalsystemsrequiressolutionsthatareadequateforthetechnicalequipmentbeingused.Formorethantenyears

2、discretecomputingdeviceshavebeenwidelyimplementedinrelayprotectionandcontrol.Theappearanceofmicroprocessorshasgivendevelopersextremelypowerfultoolsforusingnewprinciplesandalgorithmsindesigningrelaysystems.Despitethis,thedesignstrategyremainspracticallyunchanged,thoughtheneweleme

3、ntbaseexceedsthecapabilitiesoftheconventionalonetothedegreethatitissimplyonaqualitativelyhigherlevel.Inconnectionwiththis,thenecessityhasripenedforqualitativelynewapproachestodesigningrelaysystems.Conventionaldesignmethodsverymuchdependontheintuitionandexperienceofthedeveloper.T

4、heexecutionoftheworkisfrequentlyunpredictable,sincethedevelopermustsimultaneouslyrepresentthestateofmany(sometimesmorethanten)parameters.Atthesametime,apersonhasalimitedcapacitytosimultaneouslykeepinmindmanyobjects.Thiscausesnotonlycomplexityindevelopingnewdevices,butalsocausest

5、hesubjectivephenomenonofagroupofrelayprotectionexpertswhichhaveonanintuitivelevelmasteredacombinationaseveralgroupsofconcepts.Thisreducesthenumberofobjectswhichmustbekeptinmindsimultaneously,buttheformationofthesecombinedgroupshasnotbeenformalized,whichhindersmutualunderstanding

6、.Duringthedevelopmentofnewcomplexdevicesofrelaysystems,thequantityofparameters,withwhichthedeveloperhastoworksimultaneouslyincreasesevenmore.Thisnotonlycomplicatesthedesign,butalsoincreasestheprobabilityoferrors,whichsimultaneouslyhindersthecontroloftheaccuracyoftheexecutionofac

7、tivitiesforcreatingalgorithms,designingdevices,writingprogramsandconductingcorrectiontests.Intheconventionaldesignapproach,asuccessiveanalysisofsignalsismadeanddecisionsaremadeastheyarereceived.Insodoingtheevaluationofthecurrentstateoftheexaminedobjectiscarriedoutbythesuccessive

8、analysisoftransitionsofmeasuringfromoneconditio