大型电力变压器低压绕组辐向稳定性分析

Analysis of large-scale power transformer LV winding radial stability

基于电磁学理论,应用ANSYS有限元软件,建立低压绕组实际结构的力学模型,计算出低压绕组的辐向短路电动力,并考虑其对变压器安全性的影响,利用屈曲分析方法分析了该绕组的辐向稳定性,结果显示非线性屈曲分析更为精确。同时也讨论了撑条分布不均匀程度对辐向稳定性的影响。

Based on the theory of electromagnetism,and use ANSYS finite element software to establish the actual structure mechanics model of low voltage winding. This paper calculated the radial short- circuit force of the low voltage winding,and used linear buckling analysis and nonlinear buckling analysis to analyse the winging. The results show that the nonlinear buckling analysis is more accurate. At last discussed the the radial stability of bracing uneven distribution.