Harmonic Detection in Micro-Grid Based on Modified S-Transform

Abstract:

The excellent time–frequency resolution of the modified S-transform (MST) makes it an attractive candidate for analysis and detection of harmonic in micro-grid. This paper presents a new approach for micro-grid harmonic detection based on the MST. Firstly, the MST was performed for the harmonic signal, and then the feature vectors were extracted from the resulting time-frequency matrix. Finally, the frequency, amplitude and phase of the harmonic were obtained by analyzing and processing these feature vectors. Simulation results show that the proposed approach can detect the harmonic in micro-grid with high accuracy and strong noise immunity.

• Periodical: Applied Mechanics and Materials (Volumes 568-570)
• Pages: 270-273
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.568-570.270
• Online since: June 2014
• Authors: Guan Qi Liu, Li Na Wu*
• Keywords: Harmonic Detection, Microgrids (MGs), Modified S-Transform

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