An approach to power transformer protection based on wavelet transform

被引：0
|
作者：
Lu Jiping [1 ]
Chen Ying [1 ]
Yang Xue [1 ]
Li, Wenyuan [1 ]
机构：
[1] Chongqing Univ, Coll Elect Engn, Chongqing 400044, Peoples R China
来源：
IPEC: 2005 International Power Engineering Conference, Vols 1 and 2 | 2005年
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
A transformer model considering the hysteresis effect is presented first and magnetic inrushes and short-circuit faults are simulated with this model. The wavelet transform is a powerful tool in the analysis of power transformer transient phenomena because of its ability to extract information from transient signals simultaneously in both the time and frequency domains. This paper proposes a new wavelet-based method to identify an internal fault and distinguish it from an inrush current or an external fault. The simulation results demonstrated effectiveness and feasibility of the presented method.
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页码：467 / 472
页数：6
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