Nonintrusive Load Monitoring for Machines used in Manufacturing

Abstract

In order to increase the electric energy efficiency of production machines, it is necessary to determine the energy demand of the constituent electric loads. Therefore, a new measurement system based on nonintrusive load monitoring is proposed in this paper. It only measures the voltage and current of the aggregate load and then uses automatic disaggregation methods to estimate the energy demand of the constituent loads. In two case studies, the energy demand of most loads could be determined with an accuracy of 85~\% or more in this way.

Keywords: Energy monitoring; energy efficiency; nonintrusive load monitoring; disaggregation; measurement method;