Practical considerations for recursive DFT implementation in numerical relays

被引：97

作者：

Darwish, Hatem A. ^{[1
]}

Fikri, Magdy

机构：

[1] Menoufia Univ, Fac Engn, Dept Elect Engn, Power Syst Protect Grp, Shibin Al Kawm 32511, Egypt

[2] Cairo Univ, Fac Engn, Elect & Commun Engn Dept, Cairo 12613, Egypt

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2007年 / 22卷 / 01期

关键词：

computer relaying; digital signal processing (DSP); phasor estimation; recursive discrete Fourier transform (DFT);

D O I：

10.1109/TPWRD.2006.874642

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：

In this paper, practical considerations for recursive Discrete Fourier Transform (DFT) implementation in numerical relays are presented. The DFT filter instabilities which would produce accumulated errors are emphasized. The aspects ruling error accumulation of the estimated magnitude and phase are highlighted. Novel solutions directed for the elimination of error accumulation are proposed and intensively tested. Digital signal processing (DSP) board based test set-up is utilized for the experimental verification. The paper results are valuable for the protection engineers particularly those concerned with the development and implementation of numerical relays.

引用

页码：42 / 49

页数：8

共 19 条

[1] AN ADAPTIVE SAMPLING-INTERVAL GENERATOR FOR DIGITAL RELAYING [J].