Low-complexity decentralized algorithm for aggregate load control of thermostatic loads

Simon H. Tindemans, Goran Strbac

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
35 Downloads (Pure)

Abstract

Thermostatically controlled loads such as refrigerators are exceptionally suitable as a flexible demand resource. This article derives a decentralized load control algorithm for refrigerators. It is adapted from an existing continuous time control approach, with the aim to achieve low computational complexity and an ability to handle discrete time steps of variable length - desirable features for embedding in appliances and high-throughput simulations. Simulation results of large populations of heterogeneous appliances illustrate the accurate aggregate control of power consumption and high computational efficiency. Tracking accuracy is quantified as a function of population size and time step size, and correlations in the tracking error are investigated. The controller is shown to be robust to errors in model specification and to sudden perturbations in the form of random refrigerator door openings.

Original languageEnglish
Article number9246256
Pages (from-to)987 - 998
Number of pages12
JournalIEEE Transactions on Industry Applications
Volume57
Issue number1
DOIs
Publication statusPublished - 2021

Keywords

  • Aggregation
  • decentralized control
  • demand response
  • embedded controller
  • thermostatically controlled loads

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