2021 | vol. 69 | nr. 2 | art. 2

Offshore Wind Energy Integration using Photovoltaic Systems and Batteries as Smoothing Devices

MALOUM Hakima, BENDAHMANE Boukhalfa NICHITA Cristian, ADLI Mouloud
Currently, producing electrical energy is among the major concerns, which will continue to grow in the future. This is due, on the one hand, to the depletion and high conventional energy sources costs. On the other hand, because of the pollution they cause to the environment, hence the need to produce electrical energy from renewable and clean sources, such as wind, photovoltaic and tidal systems. The exploitation of the sea wind by offshore wind turbines is interesting and promising. In this context, this work aims to propose a new approach to hybrid offshore wind/photovoltaic/battery systems energy management. The power produced by the photovoltaic/battery will be used to compensate for the lack of power presented by offshore wind production in relation to the demand of the grid, as offshore wind is taken as a main source in this study. To achieve the set objective, an energy management algorithm is developed and implemented. This algorithm makes it possible to involve photovoltaics in the first place, in a progressive way according to the power deficit presented by the offshore park and the available sunshine. As it also aims to manage the charge and discharge of the battery bench last if the power supplied by the offshore wind farm alone or by offshore wind/photovoltaic does not match the demand. To verify the efficiency of this management algorithm, simulations of the offshore wind/photovoltaic/battery system were carried out under matlab/simpowers. This system is divided into several sub-systems: wind, photovoltaic and battery bank. Each of them is equipped with different specific infrastructure, as well as adequate control systems for proper operation. All subsystems are grouped together at a common connection point, where energy management is carried out prior to connection to the distribution network. The results obtained validated the main approaches of the proposed method allowing a reliable stabilization of the power level to the common connection point at the reference power that must be injected into the distribution network.
Keywords: grid-connected hybrid energy system, offshore wind turbine, photovoltaic, battery storage, energy management, control strategies
To cite this article: MALOUM Hakima, BENDAHMANE Boukhalfa, NICHITA Cristian, ADLI Mouloud, “Offshore Wind Energy Integration using Photovoltaic Systems and Batteries as Smoothing Devices”, in Electrotehnica, Electronica, Automatica (EEA), 2021, vol. 69, no. 2, pp. 13-20, ISSN 1582-5175.