A study on modeling of users a load usage pattern in home energy management system using a copula function and the application

Je Seok Shin, Jin-O Kim

Research output: Contribution to journalArticle

Abstract

This paper addresses the load usage scheduling in the HEMS for residential power consumers. The HEMS would lead the residential users to change their power usage, so as to minimize the cost in response to external information such as a time-varying electricity price, the outside temperature. However, there may be a consumer's inconvenience in the change of the power usage. In order to improve this, it is required to understand the pattern of load usage according to the external information. Therefore, this paper suggests a methodology to model the load usage pattern, which classifies home appliances according to external information affecting the load usage and models the usage pattern for each appliance based on a copula function representing the correlation between variables. The modeled pattern would be reflected as a constraint condition for an optimal load usage scheduling problem in HEMS. To explain an application of the methodology, a case study is performed on an electrical water heater (EWH) and an optimal load usage scheduling for EHW is performed based on the branch-and-bound method. From the case study, it is shown that the load usage pattern can contribute to an efficient power consumption.

Original languageEnglish
Pages (from-to)16-22
Number of pages7
JournalTransactions of the Korean Institute of Electrical Engineers
Volume65
Issue number1
DOIs
StatePublished - 2016 Jan 1

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Energy management systems
Scheduling
Branch and bound method
Water heaters
Domestic appliances
Electric power utilization
Electricity
Costs
Temperature

Keywords

  • Branch and bound
  • Copula function
  • Electrical water heater
  • Home energy management
  • Load usage pattern
  • Load usage scheduling

Cite this

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