Interharmonic Analysis Algorithm Based on TLS-ESPRIT and Prony's Method

Rui Chen; Ying Yao

doi:10.4028/www.scientific.net/AMR.694-697.1207

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 694-697Interharmonic Analysis Algorithm Based on...

Interharmonic Analysis Algorithm Based on TLS-ESPRIT and Prony's Method

Abstract:

In order to solve the traditional Prony's method faults that is vulnerable to the impact of the noise, a interharmonic analysis algorithm that is combined total least squares-estimation of signal parameters via rotational invariance technique (TLS-ESPRIT) with Prony's method is used in this paper. The numbers and frequencies of harmonic and interharmonic in the power network signals are estimated by TLS-ESPRIT. Then their amplitudes and phases were analyzed by the Prony's method. After simulation, with this algorithm the parameters of harmonic and interharmonic can be accurately estimated in low SNR. It needn’t synchronous sampl data and has high frequency resolution. this algorithm overcomes the susceptible defect of the Prony's method by noise. The results of simulation prove that in the absence of synchronous sampling data, low SNR, the use of this algorithm, high frequency resolution, can accurately estimate the parameters of harmonic and interharmonic.

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Periodical:

Advanced Materials Research (Volumes 694-697)

Pages:

1207-1210

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.694-697.1207

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Online since:

May 2013

Authors:

Rui Chen, Ying Yao

Keywords:

Interharmonic, Power Quality (PQ), Prony's Method, TLS-ESPRIT

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