变压器绕组变形检测的LVI法和FRA法的比较研究

The Comparisonal Study on LVI and FRA Method of Detecting Winding Deformation Faults in Transformers

检测变压器绕组变形的方法，国际上较早提出的是低压脉冲法（ＬＶＩ），其后有频率响应分析法（ＦＲＡ）。通过模型变压器试验对两种方法在应用中的特点作了对比，特别在测试重复性，邻近效应，出口引线影响及检测不同位置处故障的灵敏度等方面作了考察。

There are two methods of detecting the winding deformation faults in power transformer, the Low Voltage Impulse method (LVI) and the Frequency Response Analysis method (FRA). The paper makes an experimental comparison study between two methods, especially in the repeatability, the proximity effect, the effect of the link wire and the sensitivity to detect the faults in different locations of the windings.