Posters
Come meet the poster presenters to ask them questions and discuss their work
We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in industry and the academic community.
PO071: Ai Stratis - Green Island: Early operational results from a high RES penetration electrical system
Nikolaos Stefanatos, Mechanical Engineer, CRES
Abstract
The ‘Ai Stratis - Green Island’ project, implemented on the remote Greek island of Agios Efstratios in the North Aegean Sea, demonstrates the transformation of a small, isolated island grid into a renewable energy sources (RES) dominated system. The hybrid system integrates a 900 kW wind turbine, a 226.8 kWp photovoltaic plant and a 2.56 MWh/1.28 MW Li-Ion battery/inverter system for short-term energy storage. To achieve an annual RES penetration target as high as 85%, large RES production capacity, compared to the islands consumption, is installed, resulting to a high amount of curtailed renewable energy. To moderate the curtailment and further utilize the potential RES generation, a district heating system was introduced, which provides additional load balancing through a medium-term thermal storage. The existing conventional diesel power station, previously covering the total electricity demand on the island, is gradually limited to back-up operation. The project serves as a test bench for future power systems with high renewable integration. Following successful commissioning, the system is undergoing final trials and entering commercial operation. Extensive operational data from commissioning and early operation have been analyzed, demonstrating highly reliable performance. Consumer demand is fully met by the hybrid system for extended periods, with the battery/inverter system providing seamless grid-forming services. Voltage and frequency stability are significantly improved, and transitions between RES and diesel operation occur smoothly without grid disturbances. The project provides valuable information on solutions that can effectively support the energy transition of electricity systems. The project entitled “Supporting Policies and Covering Future Needs-Green Island”, (‘Ai Stratis - Green Island’) is funded by the European Regional Development Fund and the Greek state. It started with resources from the Operational Programme “Competitiveness, Entrepreneurship and Innovation” (EPAnEK, NSRF 2014–2020) and will be completed with resources from the Operational Programme “Competitiveness” (NSRF 2021–2027).
No recording available for this poster.
