Analysis of wide area integration of dispersed wind farms using multiple VSC-HVDC links

Two multi-terminal HVDC topologies are investigated in this paper to connect large-scale wind farms to the grid: two single-input single-output HVDC corridors and a double-input single-output double HVDC corridor. The first topology has two DC links operating in parallel which implies using four converter stations. The second topology has two DC corridors both connected at the output end to a single HVDC dual-input station by means of a DC busbar, which implies using three converter stations. The first topology collects power generated from widely dispersed wind farm sites, whilst the second topology is intended to efficiently interconnect nearby wind farms. The simulations results presented in this paper are building blocks towards the development of platforms helpful in the design and testing of new control strategies for operating multiple interconnected HVDC corridors. The steady state and transient performance of each topology is clearly presented throughout various study cases. The modeling and simulation work has been carried out using Simulinkcopy.