An EETD Seminar on August 13, 2010 - by Kurt Roth, Fraunhofer Center for Sustainable Energy Systems

Non-intrusive load monitoring (NILM) is a method to estimate the energy and power use of individual electrical devices in buildings. It generally relies on aggregate power metering (at the whole-building or branch circuit level) and special signal processing techniques to disaggregate the total power consumption data into loads from individual appliances, thus avoiding the time and expense of placing power meters on each device. Over the last 30 years, a variety of NILM techniques have been developed, which differ in the types of data collected, the sampling frequency, the types of metering hardware required, and the signal processing algorithms employed.

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