摘要
直流偏磁是影响变压器正常工作运行的一种典型现象。在分析变压器直流偏磁产生机理的基础上,认为直流输电系统入地电流是产生直流偏磁的主要影响因子。采用开发的直流偏磁带电测试仪和直流偏磁在线监测系统对蒙东地区的变压器中性点直流分量进行了测试。结果表明,蒙东地区变压器中性点直流分量已影响变压器的正常运行。
DC magnetic bias could affect the normal operation of the transformer,which is a typical phenomenon on transformer failure. Analyzed the mechanism of DC bias current on transformer,the ground current from adjacent DC power lines is the main factors.Adopt the Detection instrument of DC magnetic bias and Online monitoring system of DC magnetic bias,the DC component on neutral point of transformers are detected.The results show that DC coraponent is generally not more than 10A of Mengdong transformers,hut in this case, the normal operation of the transformer has been impact.
出处
《科技创新导报》
2014年第22期63-66,共4页
Science and Technology Innovation Herald
关键词
变压器
直流偏磁
中性点电流
带电检测
在线监测
蒙东地区
影响
Transformer
DC Magnetic bias
Neutral current
Living detection
Online monitoring
Mengdong District
impact
