基于加权灰色关联度的牵引变压器绝缘故障诊断软件  

Insulation Fault Diagnosis Software for Traction Transformer Based on Weighted Gray Relation Analysis

作　　者：宿冲[1] 周利军[1] 吴广宁[1] 王洪亮[1] 

机构地区：[1]西南交通大学电气工程学院,610031

出　　处：《电气应用》2007年第3期29-33,共5页Electrotechnical Application

基　　金：铁道部科技研究开发计划(2002J036);四川省青年科技基金会(460)

摘　　要：在分析了牵引变压器负荷特征和故障产气机理的基础上,针对牵引变压器的故障特点提出了一种基于加权灰色关联度分析的牵引变压器DGA故障诊断方法:收集了大量的故障变压器历史数据,对变压器状态分类成七种牵引变压器标准状态模式序列;选取五种变压器油色谱分析(DGA)特征气体值作为灰色关联度分析的参考因子并标准化;采用参考因子加权计算关联度。将基于加权关联度分析的故障诊断方法应用在开发的牵引变压器在线监测诊断软件中。通过分析大量的历史运行数据,诊断结果表明与沿用的电力变压器传统故障诊断方法相比,该方法有着更高的准确度。Because of its own operation characteristics, oil Dissolved Gases Analysis （DGA） in traction transformer are different compared to power transformer. A fault diagnosis method for traction transformer is presented, according to which seven ideal transformer model and five gases are classified as the factors of Gray Relation Analysis （GRA）, and a weighted vector to calculate the GRA result is presented. This method has been applied in the diagnosis software of the online-monitoring for traction transformer in Shanxi province. This method is valid compared to the traditional transformer fault diagnosis method by analyzing large quantity of operation data.

关 键 词：牵引变压器 灰色关联度分析 油色谱分析 诊断软件 

分 类 号：TM922.73[电气工程—电力电子与电力传动]