The weakest bus was selected for the placement of FACTS
device and from the P-V curve it was clear that the weakest
bus was bus number 14 and a STATCOM was placed in that
bus for improving the voltage stability of the entire grid. This
system was checked for small signal stability and voltage
stabilities and showed that the maximum loading point has
improved to 1.6 pu which is shown in Fig.7. The eigen value
analysis of the system proves that this system is having small
signal stability. In the z-domain analysis all the eigen vectors
were within the unit circle and proves that the system has
small signal stability.