An Improved Support Vector Clustering Algorithm for the Dynamic Equivalence of Large Wind Farms[J]. 2015, 49(5): 94-99+115.
DOI:
An Improved Support Vector Clustering Algorithm for the Dynamic Equivalence of Large Wind Farms[J]. 2015, 49(5): 94-99+115.DOI: 10.7652/xjtuxb201505015.
An Improved Support Vector Clustering Algorithm for the Dynamic Equivalence of Large Wind Farms
A clustering algorithm to the dynamic equivalent of large wind farms based on SVC is proposed to deal with the diversity of clustering parameter of wind turbines due to the variant of wind energies and the diversity of layout of wind farms. A genetic algorithm is used to realize clustering assignments. Piecewise multi-objective functions are used for iterative solution to ensure the speed and accuracy of clustering results
and to overcomes the disadvantage of traditional SVCs in clustering assignments. Outlier values of samples are used to modify the clustering results and to ensure the rationality of clustering results. An equivalent model for cables is built based on the principle that the terminal voltage of wind turbines keeps unchanged. Simulation results of a real wind farm show that the clustering time of the proposed method is about 4%of SVC. The proposed clustering method based on GA optimizes the number of equivalent wind turbines under different accuracies. The dynamic characteristics such as active power and reactive power of equivalent wind turbines are highly consistent with those of individual wind turbines in the cluster. Modification using outlier values ensures that all the outlier values of wind turbines are greater than 0.
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