A STEADY-STATE POWER GENERATION METHOD AND STACKED LSTM IN EVENT DETECTION FOR HOUSEHOLD APPLIANCES

  • Thi-Thu-Huong Le IoT Research Center, Pusan National University, Busan 609735, South Korea
  • Van-Hau Nguyen Hung Yen University of Technology and Education
  • Minh-Quy Nguyen Hung Yen University of Technology and Education
Keywords: NILM, household appliance, event detection, steady-state, CUSUM, Stacked LSTM

Abstract

Non-Intrusive Load Monitoring (NILM) is an energy monitoring system that has gained popularities in recent years for improving energy saving. NILM for home electricity management provides useful information on home appliances, for example, estimating electricity consumption of individual appliances from electric power measurement and habits of consumers in using electricity. Moreover, this system has low-cost metering solution that makes research community and companies more interest to develop it. In order to reduce sensing infrastructure costs, NILM monitors the electric load based on machine learning methods using only one sensor device. Besides, the event detection method is one of the cores in NILM that can accurately determine which appliance is ON or OFF within a period of time. The paper presents a new event detection method in a low sampling rate. This proposed method includes three main parts: (1) Generating the steady-state power signal based on the CUSUM (Cumulative SUM) signal extracted from the active power signal; (2) Generating mean and variance signals based on the generated steady-state power signal; (3) Applying Stacked LSTM (Stacked Long Short-Term Memory) model to improve event detection performance on the extracted features. The experiments are performed on two public datasets which are AMPds2 (The Almanac of Minutely Power dataset (Version 2)), UK-DALE (UK Domestic Appliance-Level Electricity). The experimental results indicate that the proposed method achieves high performance accuracy for appliance event detection by 94% to 100% in terms of the Receiver Operating Characteristic (ROC) curve.

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Published
2020-10-12
How to Cite
Thi-Thu-Huong Le, Van-Hau Nguyen, & Minh-Quy Nguyen. (2020). A STEADY-STATE POWER GENERATION METHOD AND STACKED LSTM IN EVENT DETECTION FOR HOUSEHOLD APPLIANCES. UTEHY Journal of Science and Technology, 27, 7-13. Retrieved from http://tapchi.utehy.edu.vn/index.php/jst/article/view/382