Overview of Non-Intrusive Load Monitoring A way to energy wise consumption

摘要

Global warming and climate change effects have been motivators of several laws and programs around the world to impulse energy efficiency and savings. Energy efficiency and/or savings actions require precise knowledge of energy consumption profiles from customers. These profiles are formed with individual power signature consumption of devices operating in a building installation. Individual meters in each device are expensive and troublesome for installation, so a less expensive and simpler solution is required to construct an energy profile. Smart Meters with Non-Intrusive Load Monitoring (NILM) capabilities can be used. NILM systems can disaggregate individual power signatures and help identify devices with high power consumption and their times of operation. NILM systems are implemented using different algorithms, some simpler than others, ranging from basic Power Analysis, Harmonic Spectrum Analysis and Wavelet Transform Analysis, through hybrid methods mixing solutions. This paper provides an overview of the context and solutions developed for the implementation of NILM systems.