Journal
JOURNAL OF COMPUTING IN CIVIL ENGINEERING
Volume 25, Issue 6, Pages 471-480Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)CP.1943-5487.0000108
Keywords
Nonintrusive load monitoring; Energy management; Signal processing; Demand-side management; Electrical load signatures; Power systems
Funding
- Robert Bosch LLC Research and Technology Center
- National Science Foundation (NSF) [09-30868]
- Direct For Computer & Info Scie & Enginr
- Division Of Computer and Network Systems [0930868] Funding Source: National Science Foundation
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This paper presents a nonintrusive electricity load-monitoring approach that provides feedback on the energy consumption and operational schedule of electrical appliances in a residential building. This approach utilizes simple algorithms for detecting and classifying electrical events on the basis of voltage and current measurements obtained at the main circuit panel of the home. To address the necessary training and calibration, this approach is designed around the end-user and relies on user input to continuously improve its performance. The algorithms and the user interaction processes are described in detail. Three data sets were collected with a prototype system (from a power strip in a laboratory, a house, and an apartment unit) to test the performance of the algorithms. The event detector achieved true positive and false positive rates of 94 and 0.26%, respectively. When combined with the classification task, the overall accuracy (correctly detected and classified events) was 82%. The advantages and limitations of this work are discussed, and possible future research is presented. DOI: 10.1061/(ASCE)CP.1943-5487.0000108. (C) 2011 American Society of Civil Engineers.
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