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Event-driven two-stage solution to non-intrusive load monitoring

Author

Listed:
  • Yan, Lei
  • Tian, Wei
  • Han, Jiayu
  • Li, Zuy

Abstract

To achieve long-term temperature goal of Paris Agreement and carbon neutrality by the mid-century, nonintrusive load monitoring (NILM) provides a promising approach to reducing electricity usage and carbon emission for residential and commercial buildings. Existing methods of NILM in literatures generally suffer from high computational complexity and/or low accuracy in identifying working household appliances. This paper proposes an event-driven Factorial Hidden Markov model (eFHMM) for multiple appliances with multiple states in a household, aiming for low computational complexity and high load disaggregation accuracy on with high-resolution electrical measurements, which fills the research gaps in terms of complexity and accuracy. The proposed eFHMM decreases the computational complexity to be linear to the event number, which ensures online load disaggregation. Furthermore, the eFHMM is solved in two stages, where the first stage identifies state-changing appliance using transient signatures and the second stage confirms the inferred states using steady-state signatures. The combination of transient and steady-state signatures, which are extracted from transient and steady periods segmented by detected events, enhances the uniqueness of each state transition and associated appliances, which ensures accurate load disaggregation. The event-driven two-stage NILM solution, termed as eFHMM-TS, is naturally fit into an edge-cloud framework, which makes possible the real-world application of NILM. The proposed eFHMM-TS method is validated on the high-resolution datasets such as PLAID, LIFTED and synD and low-resolution datasets such as AMPds, REFIT, REDD and compares with 20 different methods. Results demonstrate that the eFHMM-TS method outperforms other methods on the high-resolution datasets and can be applied in practice.

Suggested Citation

  • Yan, Lei & Tian, Wei & Han, Jiayu & Li, Zuy, 2022. "Event-driven two-stage solution to non-intrusive load monitoring," Applied Energy, Elsevier, vol. 311(C).
  • Handle: RePEc:eee:appene:v:311:y:2022:i:c:s0306261922001003
    DOI: 10.1016/j.apenergy.2022.118627
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    References listed on IDEAS

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    Cited by:

    1. Li, Chuyi & Zheng, Kedi & Guo, Hongye & Chen, Qixin, 2023. "A mixed-integer programming approach for industrial non-intrusive load monitoring," Applied Energy, Elsevier, vol. 330(PA).
    2. Wang, Gang & Li, Zhao & Luo, Zhao & Zhang, Tao & Lin, Mingliang & Li, Jiahao & Shen, Xin, 2024. "Dynamic adaptive event detection strategy based on power change-point weighting model," Applied Energy, Elsevier, vol. 361(C).
    3. Yan, Lei & Tian, Wei & Wang, Hong & Hao, Xing & Li, Zuyi, 2023. "Robust event detection for residential load disaggregation," Applied Energy, Elsevier, vol. 331(C).
    4. Petros Papageorgiou & Dimitra Mylona & Konstantinos Stergiou & Aggelos S. Bouhouras, 2023. "A Time-Driven Deep Learning NILM Framework Based on Novel Current Harmonic Distortion Images," Sustainability, MDPI, vol. 15(17), pages 1-14, August.

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