直流偏磁条件下变压器励磁电流的实验与分析  

Measurement and Analysis of Magnetizing Current in DC-Biased Transformers

作　　者：赵志刚[1] 刘福贵[1] 张俊杰[2] 刘兰荣[2] 范亚娜[2] 程志光[2] 颜威利[1] 

机构地区：[1]河北工业大学电磁场与电器可靠性省部共建重点实验室,天津300130 [2]保定天威集团技术中心,保定071056

出　　处：《电工技术学报》2010年第4期71-76,共6页Transactions of China Electrotechnical Society

基　　金：河北省自然科学基金资助项目(E2006001036)

摘　　要：直流偏磁工作条件下,变压器励磁电流的实验与分析是研究变压器直流偏磁电磁特性的关键问题。本文基于产品级的叠片铁心模型,模拟直流偏磁变压器铁心的实际工作状态;研究了因高压直流输电引起电力变压器直流偏磁工作条件下,变压器励磁电流的实验测量方法及其仿真计算与分析。提出并利用Matlab计算软件实现了直流偏磁励磁电流的工程解法,数值计算的结果证明了本文方法的有效性和正确性。It is the key point for studying the magnetizing current in the transformer under dc-biased magnetization. A laminated core model of product level is presented to model the working state of transformer under dc-biased magnetization and the magnetizing current is investigated based on this core model. An engineering-oriented analysis method is proposed by means of Matlab commercial software for the calculation of the magnetizing current in dc-biased transformers. The method in this design is proved to be an effective and efficient one by comparing the calculated results with the measured ones.

关 键 词：直流偏磁 叠片铁心模型 电磁特性 励磁电流 数值计算 

分 类 号：TM429[电气工程—电器]