摘要
直流偏磁可引发变压器噪声和振动加剧、无功损耗增加、继电保护故障等问题。从直流偏磁的产生原因及危害、直流偏磁计算、直流偏磁下变压器运行特性分析、直流偏磁抑制措施等方面进行了综述,对直流偏磁研究中存在的问题进行了分析,并给出了直流偏磁研究的整个流程,为直流偏磁研究提供了借鉴。
DC magnetic bias can cause transformer noise and vibration to increase,reactive power loss to increase,relay protection faults and other issues.This paper summarized the causes and damages of DC magnetic bias,the calculation of DC magnetic bias,the analysis of transformer operation characteristics under DC magnetic bias,and the measures to suppress DC magnetic bias.This paper analyzed the existing problems in the research of DC bias and gave the whole flow of DC magnetic bias research,to provide references for the DC magnetic bias research.
作者
张璐
毛辰
孙蕾
韩彦华
韩琦
ZHANG Lu;MAO Chen;SUN Lei;HAN Yan-hua;HAN Qi(State Grid Shaanxi Electric Power Company Electric Power Research Institute,Xi'an 710100,China;Powerchina Northwest Engineering Corporation Limited,Xi'an 710065,China;School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《电工电气》
2019年第8期1-6,共6页
Electrotechnics Electric
关键词
变压器
直流偏磁
抑制措施
中性点
transformer
DC magnetic bias
suppression measures
neutral point
