Enhancement of Critical Clearing Time to test system IEEE-9 by using combination or distribution Static Synchronous Compensators (STATCOMs)

This paper aims to use Static Synchronous Compensators (STATCOMs) in two cases combined or distributed, where it act in the first case as one compensator at one placement of electrical network, for the same required power of studied network, and distributed compensators as multi-STACOM with suitable powers in the second case where they are connected at the best placements of studied network, for improving critical clearing time of IEEE-9 nodes test system and its transient stability.