Comparison of Control Techniques for Damping of Oscillations in Power System using STATCOM

In a power system if any disturbance occur the machines or generators initially oscillate and then settle down at stable equilibrium point. To damp out these oscillations FACTS devices can be used as a viable option. One such popular FACT device is STATCOM. In this paper an attempt has been made to compare two controlling techniques for damping out power system oscillation using STATCOM. First technique is a Bang-Bang controller (BBC) and the other is transient energy control law. Both the techniques are used in a single machine infinite bus (SMIB) system to see the effect of the regulating law used. Stability is increased thereby damping of oscillation induced due to fault in the system.