Based on the practical project experience of offshore wind farms,this paper focuses on the analysis of the equivalent way of collecting lines of offshore wind farms and the equiv-alent modeling of offshore wind farms.Based on the advantages and disadvantages of single-machine equivalence and multi-machine equivalence in the current wind farm dynamic equiva-lence,and taking the actual wind farm as a reference,a double-layer equivalence method combining the single-machine equivalence method and the multi-machine equivalence method is proposed.According to the feeder distribution of wind turbines,the wind farm is equiva-lenced for a single unit,and then the principal component analysis method is used to extract the dominant variables for the units after the primary equivalence.This is used as the group-ing index of the secondary multi-machine equivalence and grouping the units to ensure the e-quivalence accuracy of the wind farm.The equivalent modeling performs secondary equiva-lent modeling for offshore wind farms.Through simulation verification,the equivalent sim-ulation model is compared with the actual detailed model to verify the feasibility of the equiv-alent method.
维普
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