Abstract
Increased penetration level of distributed generators (DGs) means that their influence on overall power system dynamics can no longer be neglected. Given the number and diversity of DG types, equivalent dynamic models are necessary for the representation of DG plants in large power system studies. The paper analyses dynamic equivalent modelling of hybrid renewable energy source (HRES) plant based on historical production data. The focus of the study is on transient system stability. The Monte Carlo method is used for taking into consideration uncertainties associated with production and location of individual plants within the HRES plant. Two-stage clustering procedure, based on k-means and hierarchical clustering algorithms, is used for the identification of patterns in HRES plant compositions and dynamic active power responses. Using these patterns, analytical expressions for equivalent HRES plant models are derived.
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