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毕业设计报告(论文)基于油气量的电力变压器故障诊断研究所属系电气工程系专业自动化专业学号姓名指导教师起讫日期设计地点东南大学成贤学院毕业设计报告（论文）诚信承诺本人承诺所呈交的毕业设计报告（论文）及取得的成果是在导师指导下完成，引用他人成果的部分均已列出参考文献。如论文涉及任何知识产权纠纷，本人将承担一切责任。学生签名：日期：学院毕业论文I基于油气量的电力变压器故障诊断研究—故障特征分析摘要本毕业设计基于油中气体的电力变压器故障诊断研究，重点针对变压器故障特征进行研究。对变压器故障进行总结、归类、分析；电力变压器故障检测主要有电气量检测和化学检测方法。化学检测主要是通过变压器油中特征气体的含量、产气速率和三比值法进行分析判断，它对变压器的潜伏性故障及故障发展程度的早期发现具有有效性。具体应用中要根据故障或缺陷的不同发展阶段,采用不同的分析方法,结合设备的实际运行状况及外部电气试验数据,充分发挥油化学检测的灵敏性,正确评判设备状况或制定针对性的检修策略。实际应用过程中，为了更准确的诊断变压器的内部故障，色谱分析应根据设备历史运行状况、特征气体的含量等采用不同的分析模型确定设备运行是否属于正常或存在潜伏性故障以及故障类别。关键词：电力变压器故障;分析;诊断;油中气体;色谱分析学院毕业论文IIthepowertransformerfaultdiagnosisBasedontheamountofoilandgas—FaultAnalysisAbstractThegraduationdesignbasedontheoilgaspowertransformerfaultdiagnosisresearch,focusingoncharacteristicsoftransformerfaults.Summaryoftransformerfaults,classificationandanalysis;powertransformerfaultdetectionaretheamountoftestingofelectricalandchemicaldetectionmethods.Chemicaldetectionofthemaincharacteristicsoftransformeroilbygascontent,gasproductionrateandthethreeratiomethodanalysistodetermineitspotentialtransformerfailuresandfailuresoftheearlylevelofdevelopmentfoundtohavevalidity.Specificapplicationfailureordefectsaccordingtodifferentstagesofdevelopment,usingdifferentanalyticalmethods,combinedwiththeactualoperationalstatusofequipmentandexternalelectricaltestdata,givefullplaytothesensitivityoftheoilchemicaltests,thecorrectevaluationequipmentmaintenancestatusorthedevelopmentoftargetedstrategy.Theactualapplicationprocess,moreaccuratediagnosisfortransformerinternalfault,chromatographicanalysisshouldbebasedonequipmenthistoryoperatingconditions,characteristicsofgascontentanalysismodelusingdifferentequipmentoperationtodeterminewhethertherearenormalorlatentfailuresandfailurecategories.Keywords:PowerTransformerFault；Analysis；Diagnosis；Gasofoil；Chromatography学院毕业论文III目录摘要....................................................................................................................................................................IABSTRACT..............................................................................................................................................................II第一章绪论.........................................................................................................................................................51.1本课题的背景意义.........................................................................................................................................51.2电力变压器故障的研究.................................................................................................................................51.3本文的主要工作.............................................................................................................................................5第二章变压器故障.................................................................................................................................................62.1短路故障.........................................................................................................................................................62.1.1短路电流引起绝缘过热故障..................................................................................................................62.1.2短路电动力引起绕组变形故障..............................................................................................................72.2放电故障.........................................................................................................................................................82.2.1放电故障的类型与特征..........................................................................................................................82.2.2放电故障对变压器绝缘的影响..............................................................................................................92.3绝缘故障.......................................................................................................................................................102.3.1固体纸绝缘故障....................................................................................................................................102.3.2液体油绝缘故障.....................................................................................................................................112.3.3影响变压器绝缘故障的主要因素........................................................................................................12第三章变压器油中气体分析诊断与故障检查....................................................................................................143.1变压油中溶解气体分析的原理...................................................................................................................143.1.1变压器绝缘材料的化学组成................................................................................................................143.1.2气体在绝缘油中的溶解........................................................................................................................143.1.3气体在变压器中扩散、吸附和损失.....................................................................................................143.2气相色谱的基本概念...............