电工技术学报2017，Vol.32Issue(z2)：71-76,6.DOI:10.19595/j.cnki.1000-6753.tces.160110
多次冲击条件下的大型变压器绕组辐向失稳
Radial Stability of Large Transformer Windings under Multiple Inrush Conditions
摘要
Abstract
A three dimensional finite element model of the short-circuit test transformer was established in this paper, the short circuit varies was calculated considering elastic plastic with the nonlinear buckling analysis method, and the calculation results were verified by the experimental displacement measurement. Then, for the cumulative effect of multiple short circuit impact, the problem of multiple short circuit loss was studied by using the method of buckling analysis, Finally, the influence of the number of short circuit and the support structure failure on the short-circuit stability was stated by comparing the safety factor. The results show that the simulation can accurately calculate the displacement value of the transformer short-circuit test, the error is not more than 10%, the number of short circuit impact on the safety factor of the radical instability.关键词
非线性屈曲/多次短路冲击/大型变压器/累积效应Key words
Nonlinear buckling/multiple short-circuit inrush/large transformer/build-up effect分类
信息技术与安全科学引用本文复制引用
张博,李岩..多次冲击条件下的大型变压器绕组辐向失稳[J].电工技术学报,2017,32(z2):71-76,6.基金项目
国家自然科学基金资助项目(51177103). （51177103）
