A new frequency tracking and phasor estimation algorithm for generator protection

被引：72

作者：

Hart, D ^{[1
]}

Novosel, D ^{[1
]}

Hu, Y ^{[1
]}

Smith, B ^{[1
]}

Egolf, M ^{[1
]}

机构：

[1] ABB,RELAY DIV,ALLENTOWN,PA

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 1997年 / 12卷 / 03期

关键词：

D O I：

10.1109/61.636849

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：

Digital generator protection is a complex and difficult problem. Analog and solid state methods have been successfully applied to generator protection in the past and implementation of these functions in a digital device is a continuing trend, This paper explores a new method to implement frequency tracking and phasor estimation in a numerical relay, A new algorithm is presented which utilizes a variable window DFT for frequency tracking, Use of the Discrete Fourier Transform (DFT) to compute the phasor estimates at a frequency other than the assumed frequency is outlined first. Next, a new technique for tracking the frequency is outlined, The paper concludes with testing of the new algorithm.

引用

页码：1064 / 1073

页数：10