Simulation of DFIG wind turbines for transient studies: An alternative approach based on symbolic-numeric computations

The obtained results are compared with traditional finite difference discretization (FDD) methods, widely proposed for this type of studies. The results offer a remarkable agreement between the proposed SNC method and the FDD solutions, considering variations of both wind speed profiles and electrical transient events. In this way, real voltage dips collected in Spanish wind farms are used as input voltage waveforms to evaluate the suitability of the proposed solution under transient disturbances when a large amount of individual wind turbines are simultaneously simulated. In this way, a comparison of computational time costs considering different number of wind turbines and integration time-steps is also included in the paper. From this comparison, the proposed SNC method presents clear advantages in terms of computational time cost requirements under both steady-state and transient studies.