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A systematic approach in load disaggregation utilizing a multi-stage classification algorithm for consumer electrical appliances classification

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Abstract

The potential to save energy in existing consumer electrical appliances is very high. One of the ways to achieve energy saving and improve energy use awareness is to recognize the energy consumption of individual electrical appliances. To recognize the energy consumption of consumer electrical appliances, the load disaggregation methodology is utilized. Non-intrusive appliance load monitoring (NIALM) is a load disaggregation methodology that disaggregates the sum of power consumption in a single point into the power consumption of individual electrical appliances. In this study, load disaggregation is performed through voltage and current waveform, known as the V-I trajectory. The classification algorithm performs cropping and image pyramid reduction of the V-I trajectory plot template images before utilizing the principal component analysis (PCA) and the k-nearest neighbor (k-NN) algorithm. The novelty of this paper is to establish a systematic approach of load disaggregation through V-I trajectory-based load signature images by utilizing a multi-stage classification algorithm methodology. The contribution of this paper is in utilizing the “k-value,” the number of closest data points to the nearest neighbor, in the k-NN algorithm to be effective in classification of electrical appliances. The results of the multi-stage classification algorithm implementation have been discussed and the idea on future work has also been proposed.

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Acknowledgements

The work is funded by Ministry of Science, Technology and Innovation (MOSTI) Malaysia under the MOSTI Science Fund Project (No. 06-02-11-SF0162).

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Authors and Affiliations

  1. Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Jalan Kolej, Taman Bandar Baru, Kampar, 31900, Perak, Malaysia

    Chuan Choong Yang, Chit Siang Soh & Vooi Voon Yap

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  1. Chuan Choong Yang
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Correspondence to Chuan Choong Yang.

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Yang, C.C., Soh, C.S. & Yap, V.V. A systematic approach in load disaggregation utilizing a multi-stage classification algorithm for consumer electrical appliances classification. Front. Energy 13, 386–398 (2019). https://doi.org/10.1007/s11708-017-0497-z

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