动态小波在变压器励磁涌流识别中的应用研究  

Study of Magnetizing Inrush Currents in Transformers Using Dynamic Wavelet

作　　者：胡晓哲[1] 闫钿[1] HU Xiao-zhe, YAN Tian （1.Information Science ＆ Engineering College, Liaoning University of Technology, Jinzhou 121001, China）

机构地区：[1]辽宁工业大学信息科学与工程学院,辽宁锦州121001

出　　处：《电脑知识与技术》2009年第2期924-925,929,共3页Computer Knowledge and Technology

摘　　要：电力变压器的励磁涌流识别一直是变压器保护的一个重要问题。动态小波是小波函数和傅里叶函数的组合，固此与常规小波变换相比。检测故障突变信号的能力更强。文中将动态小波运用于励磁涌流识别中，通过仿真实验证明了该方法提高了勋磁涌流鉴别的可靠性。In power transformer the main concern lies in the accurate and rapid discriminate between magnetizing inrush and internal faults currents. Dynamic wavelet transform is mixed Fourier transform and wavelet transform. This paper builds a transformer system by using MATLAB software. Then using dynamic wavelet transform to process the inrush and fault currents. The test result shows the effectiveness and superiority for dynamic wavelet transform.

关 键 词：变压器保护 励磁涌流 动态小波 

分 类 号：TM771[电气工程—电力系统及自动化]