A nonlinear adaptive filter for online signal analysis in power systems: Applications

被引：240

作者：

Karimi-Ghartemani, M ^{[1
]}

Iravani, MR ^{[1
]}

机构：

[1] Univ Toronto, Dept Elect & Comp Engn, Ctr Appl Power Elect, Toronto, ON M5S 3G4, Canada

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2002年 / 17卷 / 02期

关键词：

amplitude/phase demodulation; flicker estimation; harmonic extraction; notch filter; phase-locked loop (PLL); reactive current extraction; sinusoidal peak detector; spectrum analysis; zero-crossings detection;

D O I：

10.1109/61.997949

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 various applications of a nonlinear adaptive notch filter which operates based on the concept of an enhanced phase-locked loop (PLL). Applications of the filter for online signal analysis for power systems protection, control and power quality enhancement are presented. The proposed scheme can be applied for signal analysis both under stationary and nonstationary conditions. Based on digital time-domain simulations, applications of the filter for a) sinusoidal waveform peak detection, b) harmonic identification/detection, c) detection/extraction of individual components of a signal, d) instantaneous reactive current extraction, e) disturbance detection, f) noise reduction in zero-crossings detection, and g) amplitude (phase) demodulation for flicker estimation, are presented.

引用

页码：617 / 622

页数：6

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