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220kV主变油中总烃量超标的原因分析及处理.docx

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220kV主变油中总烃量超标的原因分析及处理 Title:AnalysisandTreatmentofExcessiveTotalHydrocarbonContentin220kVTransformerOil Abstract: Thetotalhydrocarboncontentintransformeroilisanimportantindicatorofitscleanlinessanddegradationlevel.Excessivetotalhydrocarboncontentintransformeroilcanleadtoperformancedegradation,insulationbreakdown,andultimatelyaffectthereliabilityandlifespanofpowertransformers.Thispaperaimstoanalyzethecausesofexcessivetotalhydrocarboncontentin220kVtransformeroilanddiscusspotentialtreatmentmethodsformitigatingtheissue. 1.Introduction: Transformersarecriticalcomponentsinelectricalpowersystems,andmaintainingtheirreliableoperationisofutmostimportance.Transformeroilsplayavitalroleincoolingandinsulation.However,theseoilstendtodegradeovertime,whichmayresultinanincreaseinthetotalhydrocarboncontent.Therefore,itisnecessarytoinvestigatethecausesofexcessivetotalhydrocarboncontentandidentifyappropriatetreatmentmethods. 2.CausesofExcessiveTotalHydrocarbonContentinTransformerOil: 2.1.Oxidation: Oxygenintheairreactswiththeoilmolecules,leadingtooxidation.Thisprocessgeneratespolarcompoundsandincreasesthetotalhydrocarboncontentintransformeroil. 2.2.Contamination: Contaminants,suchasdirt,moisture,andorganicmaterials,canenterthetransformeroilthroughvarioussources.Thesecontaminantsincreasethetotalhydrocarboncontentandaccelerateoildegradation. 2.3.ThermalAging: Highoperatingtemperaturesacceleratetheagingprocessoftransformeroil.Withincreasedthermalstress,theoilmoleculesbreakdown,leadingtotheformationofhydrocarboncompoundsandanincreaseinthetotalhydrocarboncontent. 2.4.InadequateMaintenancePractices: Impropermaintenancepractices,suchasinfrequentoilsampling,inadequatefiltration,andineffectiveoilpurificationmethods,cancontributetotheexcessivetotalhydrocarboncontentintransformeroil. 3.ImpactsofExcessiveTotalHydrocarbonContent: 3.1.InsulationBreakdown: Excessivetotalhydrocarboncontentintransformeroilincreasestheriskofinsulationbreakdown.Highhydrocarbonconcentrationsmaycauseinsulationfailures,lead