I摘要随着国民经济和电力系统的发展，对电力系统安全可靠运行的要求不断提高电力系统在线状态监测已经成为重要的科学研究和工程应用方向。电力设备在线状态监测可以实时监测电力设备在实际运行状况下的健康状况，为系统的安全稳定运行提供保证；它作为综合自动化的补充和发展，能够使变电站实现真正意义上的无人值守；同时它还可为电力设备的状态检修提供依据，是实现状态检修的前提和重要组成部分。本文主要研究变压器在线监测的相关方法，并在文中给出分析。变压器是电网中比较昂贵且重要的电气设备，其安全运行对于保证电网安全可靠运行意义重大，通过变压器在线的研究，以便根据实际情况选择相应的方法。本文根据变压器的各种机械和电气特性，对变压器局部放电的在线监测、变压器油的在线监测、变压器铁芯多点接地的在线监测、变压器过电压的在线监测变压器油中微量水分的在线监测、变压器绝缘老化程度的在线监测技术进行介绍关键词：变压器；在线监测；油中溶解气体；过电压绝缘老化；铁心；多点接地；局部放电IIAbstractWiththedevelopmentofthenationaleconomyandpowersystem,safeandreliableoperationofthepowersystemrequirementscontinuetoincrease,thepowerlineconditionmonitoringsystemhasbecomeanimportantdirectionofscientificresearchandengineeringapplications.PowerEquipmentOnlineconditionmonitoringreal-timemonitoringofpowerequipmentinthehealthstatusunderactualoperatingconditions,provideaguaranteeforthesafeandstableoperationofthesystem;itisasintegratedautomationsupplementanddevelopment,enablingunattendedsubstationinthetruesense;atthesametimeitmayalsobeacondition-basedmaintenanceofelectricalequipmentprovidethebasisforachievingthestatusofmaintenanceofpremisesandanimportantpart.Thispaperstudiesthecorrelationmethodoftransformeron-linemonitoringandanalysisaregiveninthetext.Gridtransformerisrelativelyexpensiveandimportantelectricalequipment,thesafeoperationofthepowergridtoensuresafeandreliableoperationofgreatsignificance,throughtransformeronlineresearchinordertoselecttheappropriatemethodbasedontheactualsituation.Accordingtoavarietyofmechanicalandelectricalcharacteristicsofthetransformeron-linemonitoringoftransformerpartialdischargeoftransformeroilon-linemonitoring,transformercoremulti-pointgroundinglinemonitoring,over-voltagetransformeron-linemonitoringoftransformeroilon-linemonitoringoftracewaterinsulationtransformeraginglinemonitoringtechniquesareintroduced.KeyWords：Transformer；on-linemonitoring；oildissolvedgases；overvoltageinsulationaging；core；multi-pointgrounding；partialdischargeIII目录摘要................................................................................................................................................IAbstract............................................................................................................................................II目录............................................................................................................................................III第1章概述.....................................................................................................................................11.1研究背景.............................................................................................................................11.2研究方法.............................................................................................................................1第2章局部放电的在线监测..............................................................................................
