变压器套管在线监测系统设计

发布时间：2018-05-15 16:51

本文选题：变压器套管 + 在线监测　；参考：《华北电力大学》2014年硕士论文

【摘要】：变压器套管作为一种出线装置，主要作用是将处于变压器内的高压线引到油箱的外部，是变压器的重要附件，也是十分重要的输变电设备之一。对变压器套管进行在线监测，，及时有效地掌握套管的运行情况，为变压器乃至整个电网的安全运行提供了保障。因此，对变压器套管实施在线监测具有很高的理论价值和现实意义。本文围绕变压器套管现场数据的采集、故障诊断、状态评估三方面对变压器套管在线监测系统进行设计。现场数据采集部分选用目前已有的采集装置分别就油色谱数据、介质损耗数据、局部放电数据进行采集提取；故障诊断部分中对油色谱数据运用改良的三比值法进行诊断，介质损耗数据根据《变压器油中溶解气体分析和判断导则》规定进行初判，再与油色谱数据结合，依据大卫三角法进行诊断；局部放电数据运用BP神经网络进行诊断；状态评估部分，建立了一种基于改进的集对分析与三角模糊数耦合的变压器套管评估模型，并通过实例验证了该方法的有效性。本系统的数据库服务器选用SQL Server2008，软件的开发平台为VisualStudio2008。
[Abstract]:The transformer bushing, as a kind of output device, is mainly used to lead the high-voltage line in the transformer to the outside of the oil tank, is an important accessory of the transformer, and is also one of the very important transmission and transformation equipment. On-line monitoring of transformer bushing, timely and effective control of the operation of the bushing, provides a guarantee for the safe operation of the transformer and even the whole power network. Therefore, the online monitoring of transformer bushing has high theoretical value and practical significance. In this paper, the on-line monitoring system of transformer bushing is designed in three aspects: data collection, fault diagnosis and state evaluation. In the field data acquisition part, the oil chromatographic data, dielectric loss data and partial discharge data are collected and extracted respectively by the existing collection devices. In the fault diagnosis part, the oil chromatographic data are diagnosed by the improved three-ratio method. The dielectric loss data is judged according to the guidelines for Analysis and judgment of dissolved gases in Transformer Oil, and then combined with oil chromatographic data to diagnose according to the David's triangle method, partial discharge data is diagnosed by BP neural network. In the part of state evaluation, an evaluation model of transformer bushing based on improved set pair analysis and triangular fuzzy number coupling is established, and the effectiveness of this method is verified by an example. The database server of this system chooses SQL Server 2008, the software development platform is Visual Studio 2008.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM407

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