Economic Model Predictive Control for Building Climate Control in a Smart Grid

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Abstract

Model Predictive Control (MPC) can be used to control a system of energy producers and consumers in a Smart Grid. In this paper, we use heat pumps for heating residential buildings with a floor heating system. We use the thermal capacity of the building to shift the electricity consumptions to periods with low energy prices. In this way the heating system of the house becomes a flexible power consumer in the Smart Grid. This scenario is relevant for systems with a significant share of stochastic energy producers, e.g. wind turbines, where the ability to shift power consumption according to production is crucial. We present a model for a house with a heat pump used for supplying thermal energy to a floor heating system. The model is a linear state space model and the resulting controller is an Economic MPC formulated as a linear program. The model includes forecasts of both weather and electricity price. Simulation studies demonstrate the capabilities of the proposed model and algorithm. Compared to traditional operation of heat pumps with constant electricity prices, the optimized operating strategy saves 25-33% of the electricity cost.
Original languageEnglish
Title of host publication2012 IEEE PES Innovative Smart Grid Technologies (ISGT)
Number of pages6
PublisherIEEE
Publication date2012
Pages6175631
ISBN (Print)9781457721588
DOIs
Publication statusPublished - 2012
EventIEEE PES Conference on Innovative Smart Grid Technologies (ISGT) - Washington, D.C., United States
Duration: 16 Jan 201220 Jan 2012
Conference number: 3

Conference

ConferenceIEEE PES Conference on Innovative Smart Grid Technologies (ISGT)
Number3
CountryUnited States
CityWashington, D.C.
Period16/01/201220/01/2012

Keywords

  • Smart Grid
  • Model Predictive Control
  • Heat pump

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