频响法和相关系数法判别变压器绕组变形的研究

频率响应分析法是检测变压器绕组变形的常用方法之一，其原理是通过观察频率响应曲线的波峰波谷分布位置及数量来判断绕组变形。根据变压器绕组等效模型利用MATLAB软件仿真，得到频响曲线，分析变压器绕组电感、电容等参数变化时的频响曲线。观察参数变化前后的曲线来判断是否变形。为便于定量计算，可采用相关系数法等进行辅助判断，利用相关系数法提出特征参数来判别变压器绕组变形程度，其结果可以为定量分析变压器绕组变形程度提供参孝。

Research on Transformer Winding Deformation about Frequency Response and Correlation Coefficient

The frequency response analysis is one of the common methods to detect transformer winding deformation, by observing the frequency response curve, analyze the location and quantity of peaks and valleys distribution to determine transformer winding deformation. Simulate the equivalent model of the transformer windings by MATLAB and get the frequency response curve, Analyze the frequency response curve of transformer winding when internal inductance or capacitance changed, Observed parameter changes of the curve to determine the winding deformation. In order to calculate facilitate, the correlation coefficient method can be used to judgment, Proposed feature parameters by correlation coefficient thereby discriminating the degree transformer winding deformation, The results can provide a reference for the quantitative analysis of transformer winding deformation degree.