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Sensors 2012, 12(12), 16838-16866; doi:10.3390/s121216838
Article

Non-Intrusive Load Monitoring Approaches for Disaggregated Energy Sensing: A Survey

1,* , 1
,
1
 and
2
1 Center for Communication Systems Research, University of Surrey, Guildford, GU2 7XH, UK 2 Department of Electrical and Electronic Engineering, University of Melbourne, Melbourne,VIC 3010, Australia
* Author to whom correspondence should be addressed.
Received: 15 October 2012 / Revised: 29 November 2012 / Accepted: 29 November 2012 / Published: 6 December 2012
(This article belongs to the Special Issue Ubiquitous Sensing)
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Abstract

Appliance Load Monitoring (ALM) is essential for energy management solutions, allowing them to obtain appliance-specific energy consumption statistics that can further be used to devise load scheduling strategies for optimal energy utilization. Fine-grained energy monitoring can be achieved by deploying smart power outlets on every device of interest; however it incurs extra hardware cost and installation complexity. Non-Intrusive Load Monitoring (NILM) is an attractive method for energy disaggregation, as it can discern devices from the aggregated data acquired from a single point of measurement. This paper provides a comprehensive overview of NILM system and its associated methods and techniques used for disaggregated energy sensing. We review the state-of-the art load signatures and disaggregation algorithms used for appliance recognition and highlight challenges and future research directions.
Keywords: Non-Intrusive Load Monitoring (NILM); Intrusive Load Monitoring (ILM); disaggregation algorithms; load signatures; energy management Non-Intrusive Load Monitoring (NILM); Intrusive Load Monitoring (ILM); disaggregation algorithms; load signatures; energy management
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Zoha, A.; Gluhak, A.; Imran, M.A.; Rajasegarar, S. Non-Intrusive Load Monitoring Approaches for Disaggregated Energy Sensing: A Survey. Sensors 2012, 12, 16838-16866.

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