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Detection and classification of power quality disturbances or events by adaptive NFS classifier

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Abstract

In power distributed generation system, analysis of power quality is a major issue and hence it is essential to implement an efficient power quality system. To address and end this issue, the proposed work is mainly focused on the detection and classification of power quality disturbances or events by applying Hilbert–Huang transform (HHT) technique. HHT technique is a novel signal processing algorithm that comprises two processes. First is the empirical mode decomposition (EMD), which is an iterative process where N number of power quality signals are decomposed into intrinsic mode functions (IMFs). The second process, Hilbert transform, is applied to each IMF component. The advantage of using these two processes makes it an attractive power tool for quality event analysis. Once the IMF is obtained, it is easy to construct a time–frequency representation model. Then, the significant features are extracted from amplitude, phase and frequency instantly, which are the contour of IMFs of each power quality disturbance. For classification, adaptive neuro-fuzzy system (NFS) classifier is used. It is an intelligent system used for the combination of neural network and fuzzy logic. Power quality features are given as input to the NFS system. The experimental simulation is conducted in a MATLAB environment, and proposed HHT has higher efficiency compared to existing methods.

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Correspondence to B. Kiruthiga.

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No conflicts of interest: Author 1, 2, and 3 declare that they have no conflict of interest.

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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008.”

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Communicated by V. Loia.

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Kiruthiga, B., Narmatha Banu, R. & Devaraj, D. Detection and classification of power quality disturbances or events by adaptive NFS classifier. Soft Comput 24, 10351–10362 (2020). https://doi.org/10.1007/s00500-019-04538-7

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  • DOI: https://doi.org/10.1007/s00500-019-04538-7

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