Stability Enhancement of Dfig Wind Turbines by Parameters Tuning of Shunt Connected Facts Devices Using Itae Index

In recent years, the doubly fed induction generators (DFIGs) are used in modern wind power plants. These generators have a large impact on the stability of power system. In this paper, we examine the stability of DFIG wind turbines with static synchronous compensator (STATCOM). Optimal tuning of STATCOM control Parameters is very important in order to proper Performance of STATCOM as a stabilizer. To select the best value for STATCOM parameter, ITAE criterion as objective function is introduced then optimization process is done by genetic algorithm with the purpose of minimizing the DFIG rotor speed oscillations and with the presence of a three phase short circuit fault. After this process, the stability of DFIG is tested with analyzing the DFIG rotor speed, DFIG active power, and DFIG voltage. Ultimately, static VAR compensator (SVC) as another common compensator is introduced to compare with STATCOM in order to minimize oscillations. Then by doing all the steps of optimization on SVC control system the better performance of STATCOM will be shown. All simulation steps are executed by Matlab software.