Transient Stability Improvement of Multi Machine Power System Using Static VAR compensator

The objective of this paper is to improve the transient stability of a multi machine power system using STATIC VAR compensator. SVC is one of the FACTS devices which are used to make the power supply more efficient and reliable. Transient stability is one of the most important stability of the power system. The loss of Transient stability is due to overloading of some of the lines (or due to sever line fault) as a consequence of tripping off of the other lines after fault or heavy loss of loads. The main aim of the work is to design the model of SVC in simulink as an alternate to the physical model which is not feasible due to enormous cost. The proposed work includes (WSCC) 3-machine 9-bus system incorporated with SVC controller using Matlab. The simulated SVC shows how the oscillations are damped out with SVC controller. The optimum location of the SVC in the system is also studied.