The STFT Applied to Inter-Harmonics Analysis in Transformer

Hui Luo; Hao Li; Liang Cao

doi:10.4028/www.scientific.net/AMM.373-375.1595

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 373-375The STFT Applied to Inter-Harmonics Analysis in...

The STFT Applied to Inter-Harmonics Analysis in Transformer

Abstract:

This paper introduces that the Short Time Fourier Transform (STFT) could be applied to analyze the time-frequency characteristics of inter-harmonics in transformer. Compared with the traditional Fourier Transform, the STFT could acquire more clear result, and offers theoretical basis for inter-harmonic detection. The STFT is used to analyze the inter-harmonics by selecting proper window slides function in Matlab which can obtain more precise resolution for the time-frequency characteristics. This method is useful to eliminate the inter-harmonics in transformer. It is helpful to improve the quality of power.

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Periodical:

Applied Mechanics and Materials (Volumes 373-375)

Pages:

1595-1598

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.373-375.1595

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Online since:

August 2013

Authors:

Hui Luo, Hao Li, Liang Cao

Keywords:

Inter-Harmonic, STFT, Time-Frequency Characteristics, Transformer

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