In recent time analysis of some major blackouts and failures of power system shows that the voltage instability problem has been one of the main reasons for these disturbances and networks collapse. In recent years, a remarkable and numerous improvements have been achieved because of electric energy generation by utilization of wind energy. However, these achievements are accompanied by several problems such as grid stability and security. The transient stability issues of the grid-connected wind farms have increased especially in case of severe disturbances and contingencies. Static analysis is used to analyze the voltage stability of the system under study, whilst the dynamic analysis is used to evaluate the performance of compensators. The static techniques used are Power Flow, V–P curve analysis, and Q–V modal analysis. In this study, Flexible Alternating Current Transmission system (FACTS) devices- namely, Static Synchronous Compensators (STATCOMs) and Static Var Compensators (SVCs) - are used as reactive power compensators, taking into account maintaining the violated voltage magnitudes of the weak buses within the acceptable limits defined in ANSI C84.1.