广东电力Issue(7)：72-77,6.DOI:10.3969/j.issn.1007-290X.2015.07.015
500 kV 自耦变压器绕组短路特性分析
Analysis on Characteristic of 500 kV Self-couple Transformer Winding Short-circuit
摘要
Abstract
Self-couple transformer is provide with merits of small volume,high efficiency,low voltage changing rate,and so on,therefore,it is widely applied in construction of extra-high voltage backbone grid. But in resent years,short-circuit of transformer frequently takes place which causes serious affect on the power grid,and proportion of that of 500 kV self-cou-ple transformer is great,so it is very important to study short-circuit performance of 500 kV self-couple transformer. There-fore,on the basis of finite element method and according to practical parameters of 500 kV self-couple transformer,electro-magnetic-circuit coupling model for winding was built and veracity of the model was verified as well. According to character-istic of practical electric connection of winding and considering low pressure-public winding operation and public-series wind-ing operation,winding leakage magnetic field and short-circuit electro-dynamic force was worked out for comparison analy-sis. Relevant laws of distribution of leakage magnetic field density and electro-dynamic force were summarized which might greatly improve safety and reliability of the power grid.关键词
自耦变压器/有限元法/场-路耦合/漏磁场/短路电动力Key words
self-couple transformer/finite element method/electromagnetic-circuit coupling/leakage magnetic field/short-circuit electro-dynamic force分类
信息技术与安全科学引用本文复制引用
徐肖伟,臧春艳,李冰阳,钱国超,邹德旭,王景林..500 kV 自耦变压器绕组短路特性分析[J].广东电力,2015,(7):72-77,6.基金项目
国家自然科学基金资助项目(51407081) （51407081）
