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Models of DFIG Wind Turbines and Complete Converter in DIgSILENT PowerFactory for Studies of Transient Analysis in Power Systems

Abstract:

This work aims to compare the transient response of four models of wind generators present in the DIgSILENT PowerFactory software; two of them are based on the international standard IEC 61400-27-1 and the others are own templates of the program. Three types of disturbances are proposed to study wind turbine models: first, a three-phase short circuit at the terminals of the generator transformer; subsequently, a step reduction in loads; finally, a step reduction in generation. The variables observed are active and reactive power, voltage and frequency. Finally, we find to observe the advantages and disadvantages of each model studied. For the short-circuit event the models bring to the failure with reactive injection. With the modification in the load the IEC models exceed some frequency limits and disconnect, the same happens with a change in the generation only that the lower limit is passed.