电测与仪表2016，Vol.53Issue(17)：29-33,111,6.
基于小波模极大值理论的励磁涌流新判据研究
Research of inrush current identification based on wavelet and modulus maximum
摘要
Abstract
Aiming at the problem that inrush current can lead to the mal-operation in differential transformer protec-tion, and this paper came up with a new method to identify inrush current and fault current based on wavelet transform and modulus maximum .Because the inrush current contains a large component of non-periodic components and dead angle, while fault current always keeps its fundamental frequency , the new method is just based on these characteris-tics.Firstly, it uses wavelet to decompose original signals , and then, select maximal points based on the theory of modulus maximum , by using the numerical relations between maximal points can distinguish different current signals . By adopting Matlab/Simulink , the simulation results show that this method can distinguish inrush current and fault current reliably .关键词
变压器/励磁涌流/小波变换/模极大值Key words
transformer/inrush current/wavelet transform/modulus maximum分类
信息技术与安全科学引用本文复制引用
公茂法,侯林源,司丹淼,周立人,柳岩妮..基于小波模极大值理论的励磁涌流新判据研究[J].电测与仪表,2016,53(17):29-33,111,6.基金项目
山东省自然科学基金 （）
