Steady state and transient stability analysis of wind energy system

The stochastic nature of the wind causes various mechanical and electrical faults. It results the fluctuations in the output power. The high turbulence causes the dynamic loading of the drive train. To investigate the performance of the wind energy system its steady state and transient stability must be studied. This paper discuses the mathematical modeling of the wind energy system. With increase in size of wind turbines the shaft stiffness, viscous friction coefficient, drive train gear ratio and generator inertia constant have influence on the transient response of wind energy systems. The steady state and transient stability analysis with pole-zero study has been done by considering these four parameters. The severity of faults is studied in detail. This study intends the designing of fault tolerant control system in future.