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Open AccessArticle

Ancillary Services Provided by Hybrid Residential Renewable Energy Systems through Thermal and Electrochemical Storage Systems

Department of Industrial Engineering, University of Rome Tor Vergata, via del Politecnico 1, 00133 Rome, Italy
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Energies 2019, 12(12), 2429; https://doi.org/10.3390/en12122429
Received: 21 March 2019 / Revised: 27 May 2019 / Accepted: 11 June 2019 / Published: 24 June 2019
(This article belongs to the Special Issue Heat and Mass Transfer in Energy Systems)
Energy Management System (EMS) optimal strategies have shown great potential to match the fluctuating energy production from renewables with an electric demand profile, which opens the way to a deeper penetration of renewable energy sources (RES) into the electric system. At a single building level, however, handling of different energy sources to fulfill both thermal and electric requirements is still a challenging task. The present work describes the potential of an EMS based on Model Predictive Control (MPC) strategies to both maximize the RES exploitation and serve as an ancillary service for the grid when a Heat Pump (HP) coupled with a Thermal Energy Storage (TES) is used in a residential Hybrid Renewable Energy System (HRES). Cost savings up to 30% as well as a reduction of the purchased energy unbalance with the grid (about 15%–20% depending on the season) have been achieved. Moreover, the thermal energy storage leads to a more efficient and reliable use of the Heat Pump by generally decreasing the load factor smoothing the power output. The proposed control strategy allows to have a more stable room temperature, with evident benefits also in terms of thermal comfort. View Full-Text
Keywords: renewables; ancillary services; hybrid systems; thermal storage; energy storage; microgrids; heat pump; model predictive control; optimization renewables; ancillary services; hybrid systems; thermal storage; energy storage; microgrids; heat pump; model predictive control; optimization
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Bartolucci, L.; Cordiner, S.; Mulone, V.; Santarelli, M. Ancillary Services Provided by Hybrid Residential Renewable Energy Systems through Thermal and Electrochemical Storage Systems. Energies 2019, 12, 2429.

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