High-Accuracy Fundamental Frequency Detection in Power System

Abstract:

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A novel method on frequency measurement based on improved TLS-ESPRIT (total least square estimation of signal parameters via rotational invariance techniques) is proposed in this paper with the research on fundamental frequency measurement in power system. TLS-ESPRIT is belong to subspace estimation in modern signal process. Noise is included in signal model, so it is independent on noise. But the same multi-poles cannot be taken when signal is in noise and based on TLS-ESPRIT. Multiple poles restoring is presented to take the true poles accurately. It is revealed that fundamental frequency is detected accurately in harmonics, interharmonics, noise and frequency fluctuations and better anti-noise ability in particular better adaptiveness on time varying signal in amplitude by simulation results.

Info:

Periodical:

Advanced Materials Research (Volumes 383-390)

Edited by:

Wu Fan

Pages:

4962-4966

DOI:

10.4028/www.scientific.net/AMR.383-390.4962

Citation:

L. Li et al., "High-Accuracy Fundamental Frequency Detection in Power System", Advanced Materials Research, Vols. 383-390, pp. 4962-4966, 2012

Online since:

November 2011

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Price:

$35.00

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