基于周期性暂态波变压器消磁新方法的研究.pdf

@中国电机工程学会2015年年会论文集基于周期性暂态波变压器消磁新方法的研究肖远清1陈水耀2 邹晖2 郑涛3 周圣炎1(,北京,100085;,杭州,311232;,华北电力大学,北京,102206)Research on lron-core ization Technology Based On The Periodic Transient WavesYuanqing Xiao1 Shuiyao Chen2Hui Zhou2Tao Zheng3 Shenyan Zhou1( Sifang Automation CO.,Ltd,Beijing,China,100085;Zhejiang Electric pany,Hangzhou,311232,China;Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control , Ministry of Education, North China Electric Power University,Beijing, 102206, China)Abstract:The paper analyzes the characteristics and harm of the iron-core residual flux,Special stress on analyzing the reason caused by presents their on-core residual flux testing technology of the transformer and the ization method,And puts forward a ization defeat tech-nology based on periodic transient waves. Practice has proved that the method in the degaussing process avoids the secondary partial flux, and can fast Word:Transformer, iron-core residual flux, Iron-core ization, transient waves摘要:本文对目前常用的直流消磁和交流消磁两种方法进行了分析,对其优缺点进行了总结,并提出了一种基于周期性暂态波消磁新方法,并将此方法用于实际大型变压器的消磁工作。实践证明,该方法在消磁过程中避免了出现次生偏磁通,并且能够快速消磁。关键词:变压器、剩磁、消磁、暂态波0引言变压器是电力系统中重要的设备,它的安全性和稳定性对整个电力系统的运行是很重要的。稳态运行时, 变压器的励磁电流只有其额定电流的1%~2%,但当变压器空载合闸时将会产生很大的励磁涌流,其峰值可达额定电流的