Assessment of the effects of wind farms connected in a power system

In this work, the authors present the results of transient stability studies, which are accomplished when assessing the effects of the connection of wind farms in a power system. For the execution of those studies, a software environment for stability simulation was developed in MATLAB/sup TM/ with a friendly user interface, that allows the execution of different cases studies, e.g. sudden disconnection of the wind farm or part of the wind farm, operation under turbulent wind, operation under wind gust, short circuits in the network, loss of conventional generation and reduction of loads. Results of simulation studies are shown to illustrate the use of the software developed and to evaluate the effects on the stability of a test power system, of the integration of a wind farm into the electric grid.