直流偏磁对中性点接地变压器衍生影响的检测分析  

Analysis on Derivative Influence Detection of DC Magnetic Bias on Neutral-grounded Transformers

作　　者：何文林[1] 孙翔[1] 邹国平[1] 张建平[1] 

机构地区：[1]国网浙江省电力公司电力科学研究院,杭州310014

出　　处：《浙江电力》2014年第10期1-5,共5页Zhejiang Electric Power

摘　　要：太阳磁暴、直流输电单极运行或非对称运行都可能引起直流偏磁。实测表明:直流输电单极运行方式会使接地极附近的中性点接地交流变压器产生严重的直流偏磁,而直流偏磁将对变压器产生噪声增大、振动加剧、谐波异常等衍生影响。Solar magnetic storm, monopole or asymmetric operation of DC transmission may cause DC mag-netic bias. The actual test indicates that the monopole operation mode of DC transmission causes severe DC bias in neutral-grounded transformers near ground electrodes and DC magnetic bias exerts derivative influence on transformers such as increase of noise, aggravation of vibration and abnormal harmonic and so on.

关 键 词：直流偏磁 变压器 噪声 振动 谐波 

分 类 号：TM406[电气工程—电器]