Optimal Integration of Wave Energy Converters in the Vis Island Renewable Microgrid

Abstract

In order to demonstrate the viability of wave energy converters usage in the Mediterranean islands, this paper explores the possibilities of optimized technical integration of wave energy converters into an island's electrical grid, with a particular focus on the island of Vis in the Adriatic Sea. After introduction, a comprehensive definition of wave energy was provided and classifications and technologies associated with wave energy converters were discussed. Additionally, different interface types between wave energy converters and the grid were discussed, as well as the potential impact of these converters on the island's grid and its electrical power system. Power matrices of two different wave energy converters (WECs), namely Wavestar and Wavebob, were adjusted to the specific sea conditions around Vis using the Froude scaling method. Also, Power Factory software tool was used to model the island's power grid, conduct simulations, and present electrical parameter values derived from real-world data collected on Vis. Various scenarios involving the integration of photovoltaic power plants and wave energy converters with the resulting data are both visually and numerically presented. Simulation results indicate a successful possibility of integrating wave energy converters to the microgrid of the island of Vis with the aim to archive near net zero electricity exchange with the mainland grid with improved power (voltage) quality in the island microgrid.

Keywords

• distribution grid
• Mediterranean islands
• optimal integration
• renewable island microgrid
• wave energy
• wave energy converters