Home > Published Issues > 2023 > Volume 12, No. 6, November 2023 >
IJEETC 2023 Vol.12(6): 385-394
doi: 10.18178/ijeetc.12.6.385-394

Real-Time Non-Intrusive Load Monitoring for Low-Power Appliances Using Odd Current Harmonics

Nimantha Madhushan*, Udari Perera, Uditha Wijewardhana, and Nishan Dharmaweera
Department of Electrical and Electronic Engineering, University of Sri Jayewardenepura, Ratmalana, Sri Lanka

Manuscript received June 6, 2023; revised September 2, 2023; accepted September 27, 2023.

Abstract—Non-intrusive load monitoring (NILM) systems have gained immense popularity in the last two decades. Although many solutions were developed using the NILM approach, the majority of solutions failed to identify low-power-consuming appliances. However, a NILM system deployed in a domestic installation should be capable of identifying low-power-consuming appliances precisely. Therefore, we propose two real-time NILM solutions that can identify low-power residential appliances. These two solutions rely on active power and harmonic information extracted from the measured current waveform. We analyzed the performances of the two solutions using simulations and real-world experiments. Results indicate that both solutions can correctly identify appliances with an average accuracy above 90 percent.

Index Terms—Non-intrusive load monitoring, event detection, supervised learning, support vector machine, appliance identification

Cite: Nimantha Madhushan, Udari Perera, Uditha Wijewardhana, and Nishan Dharmaweera, "Real-Time Non-Intrusive Load Monitoring for Low-Power Appliances Using Odd Current Harmonics," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 12, No. 6, pp. 385-394, November 2023. doi: 10.18178/ijeetc.12.6.385-394

Copyright © 2023 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.