电力变压器绕组变形实测中的影响因素

Analysis of Influence Factors in Detecting Power Transformer Winding Deformation

采用频率响应分析 (FRA)法检测变压器绕组变形时会受到诸多因素的影响而使测量结果失真 ,给分析判断带来困难。对影响因素及影响程度进行分析 ,并以典型的现场测试实例 ,说明了排除影响因素后 ,频响法在变压器绕组变形检测中的有效性。

In measuring deformation of winding of power transformer with the method of Frequency Response Analysis(FRA). It is affected by many factors and the measuring results are distorted too,hence analysis and judgment are difficult. This paper analyzes the influence factors and illustrates the effect of FRA in measuring deformation of windings of power transformer with the typical on site examples after eliminating the influence factors.