用于绕组变形检测的电力变压器集总参数等效模型研究

对双绕组电力变压器绕组集总参数模型进行了分析。首先，基于等效电路的拓扑结构，给出了利用阻抗支路矩阵和导纳支路矩阵来完整表示该等效电路的方法；然后，通过基尔霍夫定律和矩阵运算，推导出了电压、电流以及各参数之间的数学关系；最后，针对目前变压器绕组常见的轴向位移以及径向变形进行了分析，以期为仿真绕组机械故障类型及程度提供相关参考。

Research on Equivalent Model of Lumped Parameters of Power Transformer for Winding Deformation Detection

The lumped parameter model of double winding power transformer windings is analyzed.Based on the topology structure of equivalent circuit,a method to completely express the equivalent circuit by using impedance branch matrix and admittance branch matrix is given.Through Kirchhoff''s law and matrix operation,the mathematical relations among voltage,current and various parameters are deduced.Finally,the axial displacement and radial deformation of common faults in transformer windings are analyzed,which provides reference for simulating the types and degrees of mechanical faults in windings.