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RESEARCH PAPERS

Instrumentation for High Performance Nonintrusive Electrical Load Monitoring

[+] Author and Article Information
S. R. Shaw, C. B. Abler, R. F. Lepard, D. Luo, S. B. Leeb, L. K. Norford

Massachusetts Institute of Technology, LEES Laboratory, Cambridge, MA 02139

J. Sol. Energy Eng 120(3), 224-229 (Aug 01, 1998) (6 pages) doi:10.1115/1.2888073 History: Received March 01, 1998; Revised May 01, 1998; Online February 14, 2008

Abstract

This paper reviews the design and implementation of hardware and software tools for nonintrusive electrical load monitoring. Estimates of spectral content in measured waveforms can be used to determine in real time the operating schedule of loads at a target site. Techniques for transient event detection are reviewed. These techniques can detect the turn-on and turn-off transients of individual loads, and can be used to easily determine the energy usage of loads that draw constant power in steady-state operation. Techniques for monitoring the power consumption of smoothly varying loads (e.g., variable speed drives) using spectral estimates are also discussed.

Copyright © 1998 by The American Society of Mechanical Engineers
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