Non Intrusive Load Monitoring (NILM): a state of the art

The recent increase in smart meters installations in households and small bussiness by electric companies has led to interest in monitoring load techniques in order to provide better quality service and get useful information about appliance usage and user consumption behavior. This works summarizes the current state of the art in Non Intrusive Load Monitoring from its beginning, describes the main process followed in the literature to perform this technique and shows current methods and techniques followed nowadays. The possible application of this techniques in the context of ambient intelligence, energy eciency, occupancy detection are described. This work also points the current challenges in the eld and the future lines of research in this broad topic.This work has been supported by the European Commission H2020 MSCA-RISE-2014: Marie Sk lodowska-Curie project DREAM-GO Enabling Demand Response for short and real-time Ecient And Market Based Smart Grid Operation - An intelligent and real-time simulation approach ref 641794