运行中变压器常见故障诊断试验

发布时间：2018-01-16 18:00

本文关键词：运行中变压器常见故障诊断试验　出处：《天津大学》2014年硕士论文　论文类型：学位论文

【摘要】：作为电力系统中最重要的主设备之一,变压器的安全稳定运行至关重要,其可靠性不但关系到设备本身,而且关系到整个电力系统。因此,准确掌握变压器运行状态,及时发现设备故障隐患,快速准确诊断运行中变压器故障类型,采取维修处理措施,对于提高变压器运行的安全性和电力系统的可靠性、经济性等具有重要的意义。本文以运行中变压器常见故障为切入点,详细阐述了目前现场有关变压器故障诊断试验的项目、方法、相关标准和注意事项,分析了系统中主变压器的结构特点,剖析了运行中变压器的常见故障及故障机理、衍变过程和表现形式,并针对目前常见的各种故障类型一一列明了其相关诊断试验的方案,为今后及时准确诊断类似故障提供了指导性参考。最后,文章以白庙220kV 2号主变和兴辰35kV3号主变故障诊断分析为例,从设备的基本情况、故障过程、试验诊断过程、以及检查处理、故障分析和处理措施与建议等方面细致而全面的阐述了变压器故障的整个诊断分析处理过程,为准确把握故障源头,找出故障点指明了方向,同时也为今后快速准确诊断变压器故障,及时处理故障隐患提供了宝贵的借鉴经验。变压器故障诊断应以尽早尽快为原则,在准确把握停电诊断处理方法的同时,还应充分利用当前设备状态检修中带电检测和在线监测技术上的优势,及时发现缺陷掌握设备状态,为更加科学地提供检修决策,合理安排检修项目、时间,降低检修成本提供有力的保障。
[Abstract]:As one of the most important main equipment in power system, the safe and stable operation of transformer is very important. Its reliability is not only related to the equipment itself, but also to the whole power system. Grasp the operation state of transformer accurately, discover the hidden trouble of equipment in time, diagnose transformer fault type quickly and accurately, and take maintenance measures. It is of great significance to improve the safety of transformer operation and the reliability and economy of power system. This paper takes common faults of transformer in operation as the breakthrough point. This paper expounds in detail the items, methods, relevant standards and matters needing attention in the field fault diagnosis test of transformers at present, and analyzes the structural characteristics of the main transformers in the system. This paper analyzes the common faults and fault mechanism of transformer in operation, the evolution process and expression form, and lists the relevant diagnostic test schemes for each common fault type at present. In the end, the paper takes Baimiao 220kV 220kV main transformer and Xingchen 35kV 3 main transformer as an example, from the basic situation of the equipment. Fault process, test diagnosis process, inspection and treatment, fault analysis and treatment measures and suggestions, etc., elaborate the whole diagnosis and treatment process of transformer fault, in order to accurately grasp the source of the fault. Finding out the fault point indicates the direction, at the same time, it provides valuable experience for diagnosing transformer fault quickly and accurately in the future and dealing with hidden trouble in time. The principle of transformer fault diagnosis should be as soon as possible. At the same time, it is necessary to make full use of the advantages of live detection and on-line monitoring technology in current equipment condition maintenance to find defects and master equipment status in time. To provide more scientific maintenance decision, reasonable arrangement of maintenance items, time, and reduce maintenance costs to provide a strong guarantee.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM407

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