摘要
受铁磁材料的影响,变压器在电磁暂态过程中表现出很强的非线性和频率相关性,因而变压器的建模也成为电力仿真软件的薄弱环节之一,以致目前尚无任何一种模型能适用于各种运行工况。为了明确不同模型的适用范围,归纳总结了变压器中低频电磁暂态模型的基本原理,并研究了对变压器电磁暂态模型有重要影响的漏电感模型、铁心模型和损耗模型,最后给出了不同模型的适用条件。
Due to the influence of ferromagnetic materials,the transformer exhibits strong nonlinearity and frequency dependence in the electromagnetic transient process.Therefore,the modelling of the transformer has become one of the weak links in the power simulation software,so that no model can be applied to various operating conditions at present.The basic principles of transformer medium and low-frequency electromagnetic transient model are summarized,and leakage inductance model,iron core model and transformer loss model which have an important influence on transformer electromagnetic transient model are investigated.Finally,the applicable conditions of the models are given.
作者
张国栋
刘凯
ZHANG Guodong;LIU Kai(Department of Electrical and Information,SDUST,Jinan 253500,China;State Grid Luoyang Power Supply Company,Luoyang Henan 471000,China)
出处
《浙江电力》
2019年第1期70-75,共6页
Zhejiang Electric Power
基金
教育部产学合作协同育人计划项目(201702064021)
山东科技大学济南校区教研项目(JNJG2017203)
关键词
变压器
中低频
电磁暂态模型
漏电感
铁心
损耗
transformer
medium and low frequency
electromagnetic transient model
leakage inductance model
core
loss
