Abstract
there exist many kinds of wind generator that have different design and operation, since the dynamic behavior of these generators are different the power grid transient stability will be directly affected based on these different generator types; therefor the impact of each generator type on system stability of electrical network has become an interesting research issue.The paper presents a case study assessing the impact of different wind type technology on the transient Stability of power systems. Simulation analyses for three main generators used in wind turbine system have been carried out: which are the Constant Speed Wind Turbines (CSWT) with induction generator, Variable Speed Wind Turbines with Direct Drive Synchronous Generator (DDSG) and variable speed wind turbines with Doubly Fed Induction Generator (DFIG) on transients of electrical grids, were performed by replacing the traditional synchronous machine by one of these wind generators in the IEEE 14 bus network,, the change in rotor angle of generator 2, busses voltage, reactive power, and the Critical Clearing Time CCT for each case during and after fault is outlined and compared.In addition, using the STATCOM device to improve the behavior of Constant Speed Wind Turbines CSWT on transient stability is also investigated, and the impact of voltage level at the Point of Common Coupling (PCC) on system stability was included in this research work.
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