A dissertation submitted to the Faculty of Engineering and the
Built Environment, University of the Witwatersrand,
Johannesburg, in ful lment of the requirements for the degree
of Master of Science in Engineering.
Johannesburg, 2015 / The work presented extends and contributes to research in Non-Intrusive
Load Monitoring (NILM), focussing on steady-state and transient power
measurement disaggregation techniques for circuits containing household ap-
pliances. Although previous work in this area has produced and evaluated a
wide range of NILM approaches, much of it has involved the use of datasets
captured from real-world household implementations. In such cases, the lack
of accurate ground truth data makes it di cult to assess disaggregation tech-
niques. In the research presented, three NILM techniques are comparatively
evaluated using measurements from typical household appliances assembled
within a laboratory environment, where accurate ground truth data could
be compiled to complement the measurements. This allows for the accu-
racy of the various disaggregation approaches to be precisely evaluated. It
is demonstrated that the correlation of transient event edges in aggregated
power measurements to individual appliance transient exemplars performs
better than the matching of steady-state power levels against individual ap-
pliance state combinations. Furthermore, the transient approach is shown to
be the most appropriate technique for further development. / MT2017
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/22697 |
| Date | January 2015 |
| Creators | Penn, Joseph J |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | Online resource (xvii, 263 leaves), application/pdf, application/pdf |
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