Modelling and Control of a Grid-Connected RES-Hydrogen Hybrid Microgrid

Energies

Harm Lok¹  Jonny Esteban Villa Londono²  Andrea Mazza²  Enrico Pons²  Ettore Bompard² 

[1] Centre of Expertise Energie, Hanze University of Applied Sciences, Zernikelaan 17, 9747 AA Groningen, The Netherlands;Dipartimento Energia “Galileo Ferraris”, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;

关键词: hybrid microgrid;    hydrogen storage system;    alkaline electrolyser;    PEM fuel cell;    low-carbon future energy systems;    variable renewable energy sources;   

DOI  :  10.3390/en14061540

来源: DOAJ

【 摘 要 】

This paper proposes a Hybrid Microgrid (H$\mu$G) model including distributed generation (DG) and a hydrogen-based storage system, controlled through a tailored control strategy. The H$\mu$G is composed of three DG units, two of them supplied by solar and wind sources, and the latter one based on the exploitation of theProton Exchange Membrane (PEM) technology. Furthermore, the system includes an alkaline electrolyser, which is used as a responsive load to balance the excess of Variable Renewable Energy Sources (VRES) production, and to produce the hydrogen that will be stored into the hydrogen tank and that will be used to supply the fuel cell in case of lack of generation. The main objectives of this work are to present a validated dynamic model for every component of the H$\mu$G and to provide a strategy to reduce as much as possible the power absorption from the grid by exploiting the VRES production. The alkaline electrolyser and PEM fuel cell models are validated through real measurements. The State of Charge (SoC) of the hydrogen tank is adjusted through an adaptive scheme. Furthermore, the designed supervisor power control allows reducing the power exchange and improving the system stability. Finally, a case, considering a summer load profile measured in an electrical substation of Politecnico di Torino, is presented. The results demonstrates the advantages of a hydrogen-based micro-grid, where the hydrogen is used as medium to store the energy produced by photovoltaic and wind systems, with the aim to improve the self-sufficiency of the system.

【 授权许可】

Unknown