Comparison of HVAC and HVDC collection grids in offshore windfarms

Abstract

With the increasing demand for electrical energy and the strained resources available, the world is moving to greener energy sources such as wind and solar. This research paper presents a comparison between high voltage alternating current (HVAC) and high voltage direct current (HVDC) collection grids for offshore wind farms. HVAC collection systems for offshore wind farms have traditionally been used but limit the transmission distance, or costs exuberant amounts of capital for greater distances. HVDC systems have started to be recognized as a viable method of transmitting this electrical energy at a much lower cost on longer distances. This study shows a comparative performance and cost evaluation of both HVAC and HVDC collection systems for offshore wind farms. It evaluates the efficiency of the wind farm based on system losses, determines the advantages, disadvantages, and cost implications of each system, and determines the best type of technology to be selected for use in future wind farm systems.