An Improved Dynamic Equivalent Method for the DC Offshore Wind Farm

摘要

In order to analysis the output dynamic characteristics of dc offshore wind farm, a multimachine representation dynamic equivalent method based on an improved fuzzy C-means (IFCM) clustering algorithm is proposed. First, characteristic variables which can characterize the dynamic characteristics of the input and state performance are researched. Second, an IFCM clustering algorithm is first put forward. Third, the dc offshore wind generators (DCOWGs) are divided into many groups by analyzing the characteristic variables data with the IFCM. Finally, DCOWGs in the same group are equivalent as one DCOWG to analyze the dynamic characteristics. Simulation results from MATLAB/SIMULINK verify the theoretical analysis.