离相封闭母线导体不对中电动力计算与分析Calculation and analysis of electrodynamic force caused by misalignment of conductors in enclosed isolated phase busbars
蔡飞鸿,张海龙,冯安涛,朱驰炜,张津源,俞嘉泽,李磊
摘要(Abstract):
离相封闭母线(Enclosed Isolated Phase Bus, EIPB)长期工作在振动环境下,其固定装置和弹性结构容易出现松动和老化造成母线外壳与导体不对中,进而导致导体受力不平衡与母线异常振动。首先对离相封闭母线磁场进行分析,揭示不对中产生电动力的机理,其次分析外壳涡流,进而求解导体不对中情况下的电动力,最后将电动力施加到离相封闭母线模型,分析不对中电动力对离相封闭母线振动特性的影响,并结合有限元仿真进行对比验证。结果表明,该方法计算得到的理论值与仿真值基本一致,离相封闭母线在此电动力作用下振幅有明显增加。研究结果对母线不对中情况下的电动力计算提供了一种可行方法,对母线结构设计与异常振动引起的机械故障检测有一定的指导意义。
关键词(KeyWords): 离相封闭母线;导体不对中;涡流;电动力;振动
基金项目(Foundation):
作者(Author): 蔡飞鸿,张海龙,冯安涛,朱驰炜,张津源,俞嘉泽,李磊
DOI: 10.19594/j.cnki.09.19701.2025.04.003
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