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基于DIgSILENT仿真含分布式电源的故障定位算法.docx

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基于DIgSILENT仿真含分布式电源的故障定位算法 Title:FaultLocalizationAlgorithmforDistributionSystemswithDistributedGenerationBasedonDIgSILENTSimulation Abstract: Faultlocalizationisacrucialtaskindistributionsystemsasithelpsinminimizingoutagetimeandenhancingsystemreliability.Withtheincreasingintegrationofdistributedgeneration(DG)unitsindistributionsystems,faultlocalizationbecomesmorechallengingduetothedynamicnatureofDGunits.ThispaperproposesafaultlocalizationalgorithmbasedonDIgSILENTsimulation,whichtakesintoaccountthepresenceofDGunitsindistributionsystems.Thealgorithmutilizesreal-timemeasurementsandtakesadvantagesofthecapabilitiesprovidedbyDIgSILENTtoaccuratelylocatefaultsinthesystem. 1.Introduction: TheintegrationofDGunitsindistributionsystemshasrevolutionizedtheconventionalpowersystemarchitecture.WhileDGunitsprovidevariousbenefitssuchasimprovedsystemreliabilityandreducedlinelosses,theyintroduceadditionalcomplexitiesinfaultlocalization.TraditionalfaultlocalizationalgorithmsarenotsuitableforsystemswithDGunitsduetotheuncertaintyandvariabilityassociatedwithDGsources.Therefore,anovelalgorithmbasedonDIgSILENTsimulationisproposedinthispapertoaddressthesechallenges. 2.Background: ThissectionprovidesanoverviewofDIgSILENTsimulationsoftware,whichiswidelyusedforpowersystemanalysisandsimulation.ItalsocoversthebasicsoffaultlocalizationalgorithmsandtheirlimitationsindistributionsystemswithDGunits. 3.FaultLocalizationAlgorithm: Theproposedfaultlocalizationalgorithmconsistsofseveralsteps,asdescribedbelow: -Step1:Dataacquisition-Real-timemeasurementsfromvarioussensorsarecollectedusingtheDIgSILENTsimulationtool.Thisincludesvoltage,current,andpowerflowdatafromdifferentbusesandlinesinthedistributionsystem. -Step2:Pre-processingofdata-Thecollecteddataispre-processedtoremovenoiseandoutliers.Datasmoothingtechniques,suchasmovingaverageorKalmanfiltering,canbeemployedtoensuretheaccuracyofsubsequentcalculations. -Step3:Faultdetection-Faultdetectionalgorithmsareutilizedtoidentifytheoccurrenceofafaultinthesystem.