Non-Intrusive Appliance Load Monitoring System Based on a Modern kWh-Meter

摘要

Non-intrusive appliance load monitoring (NIALM) is a farily new method to211u001eestimate load profiles of individual electric appliances in a small building, 211u001elike a household, by monitoring the whole load at a single point with one 211u001erecording device without sub-meters. Appliances have special electrical 211u001echaracteristics, the positive and negative active and reactivate power changes 211u001eduring the time they are switched on or off. These changes are called events and 211u001eare detected with a monitoring device called an event recorder. Different NIALM-211u001econcepts developed in Europe and in the United States are generally discussed. 211u001eThe NIALM-concept developed in this study is based on a 3-phase power quality 211u001emonitoring kWh-meter and unique load identification algorithms. This modern kWh-211u001emeter with a serial data bus to a laptop personal computer is used as the event 211u001erecorder. The NIALM-concept of this presentation shows for the first time how a 211u001ekWh-meter can be used at the same time for billing, power quality and appliance 211u001eend-use monitoring.