基于爱泼斯坦方圈的直流偏磁特性分析  

Analysis of DC-biasing characteristics based on Epstein frame

作　　者：梁宇超[1] 赵小军[1] 徐静[2] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206 [2]中国石油天然气管道工程有限公司,河北廊坊065000

出　　处：《磁性材料及器件》2013年第1期28-31,共4页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金资助项目(50677016);中央高校基本科研业务费专项基金资助(12QN42)

摘　　要：由高压直流输电产生的直流电流会给电力变压器造成一系列危害。基于爱泼斯坦方圈设计了实验方案并对电力变压器进行了直流偏磁实验。通过对励磁电流测量值分析,研究了直流偏磁对励磁电流各次谐波的影响;通过对铁心损耗的测量分析了直流偏磁条件下硅钢片的损耗特性。基于爱泼斯坦方圈的直流偏磁实验研究有利于揭示直流偏磁机理,同时对电力变压器的工程设计有着重要的指导意义。The DC bias current arising from the HVDC system may lead to a series of damages to power transformer. The DC-biasing experiment based on Epstein frame are designed and carried out. The measured magnetizing current are analyzed to study the influence of DC bias on harmonic components of magnetizing current. The iron loss is measured and analyzed under DC-biased magnetization. The DC-biasing experiment based on Epstein frame contributes to exploring the mechanism of DC bias phenomenon and designing the power transformer in engineering.

关 键 词：电力变压器 直流偏磁 爱泼斯坦方圈 铁损 

分 类 号：TM40[电气工程—电器]