Virtual sub-metering via combined classifiers

The aim of virtual sub-metering is to disaggregate and report the operation of individual electrical loads beyond the single measurement point. Traditional non-intrusive load monitoring methods (steady state load classification, transient pattern analysis) usually fail if many similar loads are connected beyond the measurement point. This situation can be often encountered in commercial and public buildings. This paper provides a way how to substantially improve the performance of virtual sub-metering in this target environment via using combined classifier approach. The proposed algorithm utilize only inputs which are typically already available within the standard Building Management System (BMS) and combine this diverse information in an appropriate manner to get the results as well as their confidence.