NEW ALGORITHM FOR DIGITAL IMPEDANCE RELAYS

被引：160

作者：

SACHDEV, MS

BARIBEAU, MA

机构：

[1] Power Systems Research Group, University of Saskatchewan, Saskatoon

来源：

IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS | 1979年 / 98卷 / 06期

关键词：

D O I：

10.1109/TPAS.1979.319422

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 new algorithm suitable for calculating impedances from digitized voltages and currents sampled at a relay location. Each input is assumed to be composed of a decaying d.c. component and components of the fundamental and harmonic frequencies. Parameters of a digital filter determined by using the least error squares approach are then used to compute the real and imaginary components of the voltage and current phasors. Impedances as seen from a relay location are then calculated. The proposed algorithm was tested using the fault data recorded at the Regina South switching station of the Saskatchewan Power Corporation; some of the test results are included. © 1979 IEEE

引用

页码：2232 / 2240

页数：9