Axencia Galega de Innovacion

Abstract. The concepts of Energy Islands or Energy Hubs have gained attention in Europe as a means to enhance offshore wind integration and regional energy systems. These islands can incorporate HVAC and HVDC transmission systems, battery energy storage systems (BESS), and hydrogen production, requiring advanced operational strategies to manage the inherent nonlinearities and time-dependence of their subsystems. To address these challenges, this work proposes a comprehensive framework for the optimal operation of hybrid AC/DC energy islands, addressing: (i) active and reactive power dispatch, incorporating BESS and hydrogen production; (ii) a detailed wind resource characterization based on one year of hourly data obtained using a realistic wind model with local measurements, including wake losses and turbine-level forecasts, used to define representative seasonal and spatial production patterns that inform typical operating conditions; and (iii) operational optimization of a realistic test system based on the Princess Elisabeth energy island, set up using commercial wind power planning tools and advanced forecasting software, and validated with Pyomo/Python.

Introduction: The media and social media have informed the public about the details and the evolution of the COVID-19 pandemic and the subsequent prevalence of Long COVID. There has been growing concern throughout that information should be accurate, sufficient, and truthful. Objective: The aim of this research is to identify this discourse in the Spanish digital media world in order to understand the media representations they produce and to improve communication awareness campaigns. Methods: Adopting a threefold methodological approach (Social Medial Listening, discourse analysis and social representation), the media discourse of Long COVID on different social media and in Spanish digital media is analysed for 12 months using the DIGIMIND tool. The five components of Laswell’s Model of Communication: who; (says) what; (to) whom, which (channel) and what (effect), are evaluated and reported. Results: The analysis shows, among other results, which keywords are most present in social media and in digital press; the most consulted sources of information; or how information links are established between those studied. Conclusions: Based on these findings, an effective communication guide on Long COVID has been developed with a set of recommendations to be implemented by government agencies, health communication specialists and affected groups.