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

被引：19

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

页码：366 / 374

页数：9

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