大地直流偏磁状态下电力变压器性能分析  

Analysis on the Performance of Power Transformers under Earth DC Bias Magnetic

作　　者：邢军强[1] 韩刚[1] 杨德利 杨文强 王雅慧 张景山 杜明竞 XING Junqiang;HAN Gang;YANG Deli;YANG Wenqiang;WANG Yahui;ZHANG Jingshan;DU Mingjing(Shenyang Institute of Engineering,Shenyang 110136,China)

机构地区：[1]沈阳工程学院,沈阳110136

出　　处：《农业科技与装备》2020年第1期26-27,30,共3页Agricultural Science & Technology and Equipment

摘　　要：地磁感应电流会引起变压器准直流偏磁而造成铁芯饱和,对变压器及电力系统产生电压不稳定、无功补偿、电流谐波、变压器局部温升等多方面影响。对直流偏磁状态下不同结构电力变压器进行性能分析,以期为电力变压器稳定运行提供解决方案。The geomagnetic induction current will cause quasi-dc bias of the transformer and cause the saturation of the iron core,which will affect the transformer and power system in many aspects,such as voltage instability,reactive compensation,current harmonics and local temperature rise of the transformer.This paper analyzes the performance of power transformers with different structures under dc bias magnetic state in order to provide a solution for the stable operation of power transformers.

关 键 词：地磁感应电流 变压器 直流偏磁 性能分析 

分 类 号：TM41[电气工程—电器]