Integration of Hydrogen Generator into Wind Farm Interconnected HVDC System

This paper presents the integration of hydrogen generation scheme into wind farm interconnected high-voltage DC (HVDC) system. The offshore wind farm composed of variable speed wind turbines driving permanent magnet synchronous generators and HVDC transmission system based on three-level (3L) neutral point clamped (NPC) voltage source converter (VSC) for the interconnection between offshore wind farm and onshore grid connection point are considered in this study. Suitable topology for hydrogen generation system composed of rectifier and chopper controlled electrolyzer unit is considered in this study to generate hydrogen using electrical power from offshore wind farm. Real wind speed date is used in the simulation study to obtain realistic response. Both dynamic and transient analyses of the proposed system are carried out using laboratory standard power system software package, PSCAD/EMTDC.