University of Hertfordshire

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Original languageEnglish
Number of pages11
JournalIEEE Transactions on Emerging Topics in Computational Intelligence
Publication statusPublished - 16 Jun 2021


Non-Intrusive Load Monitoring aims to extract the energy consumption of individual electrical appliances through disaggregation of the total power load measured by a single smart-meter. In this article we introduce Double Fourier Integral Analysis in the Non-Intrusive Load Monitoring task in order to provide more distinct feature descriptions compared to current or voltage spectrograms. Specifically, the high-frequency aggregated current and voltage signals are transformed into two-dimensional unit cells as calculated by Double Fourier Integral Analysis and used as input to a Convolutional Neural Network for regression. The performance of the proposed methodology was evaluated in the publicly available U.K.-DALE dataset. The proposed approach improves the estimation accuracy by 7.2% when compared to the baseline energy disaggregation setup using current and voltage spectrograms.


© 2021 IEEE. This is the accepted manuscript version of an article which has been published in final form at 10.1109/TETCI.2021.3086226

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