Adaptive differential protection of three-phase power transformers based on transient signal analysis

被引：18
|
作者：
Oliveira, Mario Orlando [1 ]
Bretas, Arturo Suman [1 ]
Ferreira, Gustavo Dornelles [1 ]
机构：
[1] Univ Fed Rio Grande do Sul, Elect Power Syst Lab, BR-90035190 Porto Alegre, RS, Brazil
来源：
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS | 2014年 / 57卷
关键词：
Adaptive protection; Discrete wavelet transform; Transformer differential protection; Transient analysis; WAVELET TRANSFORM; INTERNAL FAULTS; INRUSH CURRENTS; DISCRIMINATION; ALGORITHM; FREQUENCY;
D O I：
10.1016/j.ijepes.2013.12.013
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：
This paper presents a three-phase power transformer percentage differential protection formulation based on transient signal analysis. The proposed formulation uses discrete wavelet transforms (DWT) to extract transitory features of non-stationary signals with fast transition, mapping the signal in time-frequency representation. The proposed formulation was implemented on MATLAB environment and evaluated through a case study using BPA'S ATP/EMTP software. Comparative test results are presented showing that the proposed formulation is highly reliable, fast, accurate and easy for real-life construction. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：366 / 374
页数：9
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