ABSTRACT
In this paper, a fuzzy logic controller is designed for static synchronous compensator (STATCOM) to enhance interconnected power system stability. The power frequency model for STATCOM with conventional PI (Proportional Integral) controller is presented first. Fuzzy logic controller in then designed for main controller of the STATCOM. The main controller is used for regulating the AC bus voltage. The Static Synchronous Compensator (STATCOM) is performing a significant role in reactive power compensation and transient stability enhancement in modern power systems. This paper investigates the application of a rule based fuzzy logic control technique for controlling a STATCOM at steady and transient condition. This study demonstrates that fuzzy logic based STATCOM considerably improves the transient stability of power system during occurrence of fault. The control strategy is evaluated by simulation programs and the comparison indicates the fuzzy logic based STATCOM gives improved performance compared with PI STATCOM controller based technique.
