大型电力变压器绕组纵绝缘波过程计算分析

Analysis of winding vertical insulation wave calculation of large power transformer

阐述了电力变压器纵绝缘结构设计过程中绕组波过程计算简化等效电路模型及其计算方法,基于Matlab编写了绕组波过程计算程序,通过实例计算得到了变压器绕组电位及其梯度分布,将其同一种特殊移相变压器绕组波过程实验计算结果对比,电位梯度分布数据基本一致,由此证实该方法可行。

This paper discusses winding wave process calculation simplification,and equivalent circuit model and its calculation method in the power transformer vertical insulation structure design.Winding wave process calculation program is written based on Matlab.The example calculation shows the power transformer potential and its gradient distribution.When compared with experimental calculation result of the same transformer winding wave process with special phase-shift,the potential gradient distribution data are basically the same,which proves the method is feasible.