Stand-alone Offshore Wind Farm for Green Hydrogen Production with Technical Feasibility

This study investigates the technical feasibility of utilizing stand-alone offshore wind farms for the production of green hydrogen using a centralized electrolyser, contributing to global decarbonization initiatives. The wind farm is equipped with PMSG Wind Turbine Generators (WTGs). These generators operate in a grid-forming mode (GFM) using droop control, ensuring regulation of the point of common coupling (PCC) voltage magnitude and frequency. The system's design comprises multiple interconnected subsystems: WTGs organized in arrays, rectifiers, DC/DC converter, a Battery Energy Storage System (BESS), and a centralized electrolyser. Some challenges related to designing the offshore system like black-start capability, synchronization, and power generation-load balance are investigated. Simulation results validate the system's capability to consistently power the electrolyser for green hydrogen generation, given that the wind farm receives sufficient wind. In situations where wind power is insufficient, the system will shut down, only to restart when wind speeds rise above a set threshold, determined by both wind speed data and system reaction times.