AGGREGATED MODELLING OF WIND PARKS WITH VARIABLE SPEED WIND TURBINES IN POWER SYSTEM DYNAMICS SIMULATIONS

More and more wind turbines are made part of electrical power systems, in order to reduce the adverse environmental impact of conventional electrical power generation. A tendency to erect these turbines in wind parks, that are connected to the high voltage transmission grid can be observed. To facilitate the investigation of the impact of a wind park on the dynamics of the power system to which it is connected, an adequate model is required. In order to avoid the necessity of developing a detailed model of a wind park with tens or hundreds of wind turbines and their interconnections, aggregated wind park models are needed. A further advantage of aggregated models is a substantial reduction of computation time. In this paper, an aggregated model for a wind park equipped with variable speed wind turbines is developed and it is shown that the results yielded by the aggregated model and a detailed model show a high degree of correspondence.

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