High-Accuracy Fundamental Frequency Detection in Power System

Ling Li; Guo Bin Jin; Shao Ping Huang; Xiao Peng

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

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 383-390High-Accuracy Fundamental Frequency Detection in...

High-Accuracy Fundamental Frequency Detection in Power System

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 383-390)

Pages:

4962-4966

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.383-390.4962

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Online since:

November 2011

Authors:

Ling Li, Guo Bin Jin, Shao Ping Huang, Xiao Peng

Keywords:

Frequency Measurement, Multi-Poles, Subspace, TLS-ESPRIT

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