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Aggregation of flexible domestic heat pumps for the provision of reserve in power systems
Georges, Emeline; Quoilin, Sylvain; Mathieu, Sébastien et al.
2017In Proceedings of the 30th International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems.
 

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Keywords :
Heat pumps; linear optimization; power systems; ancillary services; flexibility
Abstract :
[en] The integration of renewable energy sources in the electricity production mix has an important impact on the management of the electricity grid, due to their intermittency. In particular, there is a rising need for flexibility, both on the supply and demand sides. This paper assesses the amount of flexibility that could be reserved from a set of flexible residential heat pumps in a given geographical area. It addresses the problem of a load aggregator controlling a set of heat pumps used to provide both space-heating and domestic hot water. The flexibility of the heat pumps is unlocked in order to reduce electricity procurement costs in the day-ahead electricity market, while ensuring the provision of a predefined amount of reserve for real-time grid management. The objective of the paper is two-fold. On the one hand, an aggregation method of large sets of heat pumps based on physics-based models and random sampling techniques is proposed. On the other hand, a combined optimization problem is formulated to determine both the optimal electricity demand profile to be bought on the day-ahead market and the cost associated to the reservation of a defined amount of power. The method is applied to a set of 40000 residential heat pumps in Belgian houses. Results show that these houses can provide up to 100MW of upward reserve for 50% of the current costs. The provision of downward reserve at competitive cost is hampered by significant overconsumption.
Disciplines :
Energy
Author, co-author :
Georges, Emeline ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Quoilin, Sylvain  ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Mathieu, Sébastien ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Smart grids
Lemort, Vincent  ;  Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Language :
English
Title :
Aggregation of flexible domestic heat pumps for the provision of reserve in power systems
Publication date :
July 2017
Event name :
30th International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems.
Event place :
San Diego, United States
Event date :
July 2nd-6th
Audience :
International
Main work title :
Proceedings of the 30th International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems.
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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since 07 July 2017

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