Modelling household electricity load profiles based on Danish time-use survey data

Kyriaki Foteinaki*, Rongling Li, Carsten Rode, Rune Korsholm Andersen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The relationship among occupants’ presence, activities and appliance use is essential for households’ energy use. In the present work, we aimed to link occupants’ energy-related activities to electricity demand, in order to obtain a representative daily electricity load profile for Danish households using Danish time-use survey (DTUS) data. The approach was to combine appliance ownership and power ratings with occupant activities from the DTUS. Two modelling approaches were implemented: in the first approach, the occupant activities profiles from the DTUS were used directly to determine activities at 10-minute intervals. In the second approach, the probabilities of starting time and duration of the occupant activities were used to determine activities. In both approaches, appliance use was assigned to the energy-related activities. The set of appliances used in each activity was determined from a national database of appliance ownership, and the appliances’ power was calibrated using information from apartments in Copenhagen, Denmark. The modelled daily electricity load profile was compared with three measured datasets of varying sizes and from different parts of Denmark. Both approaches captured important qualitative characteristics of the measured load profiles. However, the first approach used a more simple method and resulted in smaller errors than the second approach.
Original languageEnglish
Article number109355
JournalEnergy and Buildings
Volume202
Number of pages11
ISSN0378-7788
DOIs
Publication statusPublished - 2019

Keywords

  • Household electricity profile
  • Time-use survey data
  • Load modelling
  • Daily load profiles
  • Residential building

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