大容量变压器线圈短路状态下非线性稳定性与动力稳定性  

Study of Nonlinear and Dynamic Stabilities of Large Power Transformer Coils Under Short-Circuit Condition

作　　者：曹志军[1] 胡家炘[2] 巨建民[1] 郭吉坦[1] 毕巧巍[1] 

机构地区：[1]大连铁道学院交通运输工程系,辽宁大连116028 [2]沈阳工业大学,辽宁沈阳110023

出　　处：《大连铁道学院学报》2003年第2期31-35,共5页Journal of Dalian Railway Institute

摘　　要：针对大容量变压器在短路状态下线圈的机械稳定性问题,采用三维计算模型,选取空间梁单元模式,应用大位移小应变理论,选用Budiansky-Roth准测判断失稳临界状态,对线圈结构的非线性动静态稳定性进行有限元分析。This paper discusses nonlinear and dynamic stabilities of large power transformer coil under short-citcuit condition and cal-culates its spatial unstable critical loads and mode-shapes adapting spatial beam element and using the Budiansky-Roth criterion to evaluate unstable state based on the large displacement and small deformation theory.

关 键 词：大容量变压器 线圈 短路 非线性稳定性 动力稳定性 三维计算模型 有限元分析 可靠性 

分 类 号：TM41[电气工程—电器]