Comparative Analysis of Aggregation Topologies for All-DC Offshore Wind Farms

Full DC offshore wind farms are the future development trend, but due to a lack of practical engineering experience, it is necessary to develop an economic analysis model of DC aggregating topology, along with a reliable large-capacity wind farm example and a comparison of various aggregating topologies. In order to improve the reliability calculation method and account for the effects of faults at various locations on the full wind farm, this paper establishes an economic analysis model from three perspectives of economy, power loss, and reliability. It also performs a quantitative comparative analysis of the calculation examples. The analysis's findings indicate that the parallel-type wind farm has higher reliability, but the series-parallel wind farm has clear advantages in terms of cost and power loss, and it is fiercely competitive when choosing the future all-DC offshore wind farm aggregation topology.