Non-intrusive appliance load monitoring system based on a modern kWh-meter
Non-intrusive appliance load monitoring (NIALM) is a fairly new method to estimate load profiles of individual electric appliances in a small building, like a household, by monitoring the whole load at a single point with one recording device without sub-meters. Appliances have special electrical characteristics, the positive and negative active and reactivate power changes during the time they are switched on or off. These changes are called events and are detected with a monitoring device called an event recorder. Different NIALM-concepts developed in Europe and in the United States are generally discussed. The NIALM-concept developed in this study is based on a 3-phase power quality monitoring kWh-meter and unique load identification algorithms. This modern kWh-meter with a serial data bus to a laptop personal computer is used as the event recorder. The NIALM-concept of this presentation shows for the first time how a kWh-meter can be used at the same time for billing, power quality and appliance end-use monitoring.
- Research Organization:
- Valtion Teknillinen Tutkimuskeskus, Espoo (Finland)
- OSTI ID:
- 316422
- Report Number(s):
- PB-99-120107/XAB; VTT-PUBS-356; TRN: 90321794
- Resource Relation:
- Other Information: TH: Thesis (Licentiate); PBD: May 1998
- Country of Publication:
- United States
- Language:
- English
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