Detection of inrush current in distribution transformer using wavelet transform

被引：30

作者：

Sedighi, AR ^{[1
]}

Haghifam, MR ^{[1
]}

机构：

[1] Tarbiat Modares Univ, Dept Elect Engn, Tehran, Iran

来源：

INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS | 2005年 / 27卷 / 5-6期

关键词：

distribution transformer; inrush current; switching transient; wavelet transform;

D O I：

10.1016/j.ijepes.2004.12.007

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Inrush currents in transformers are non-sinusoidal, high magnitude currents generated due to flux saturation in the core during energization. For protection purpose, in this paper an efficient method for detection of inrush current in distribution transformer based on wavelet transform is presented. Using this method inrush current can be discriminated from the other switching transients such as: load switching, capacitor switching and single phase to ground fault. Inrush current and other events for feature extraction and discrimination are simulated using Electro Magnetic Transient Program (EMTP). Results in all cases show the effectiveness of proposed procedure in identifying inrush current from other transients. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：361 / 370

页数：10

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