PSO-tuned Adaptive Backstepping Control of Power Systems

In this paper, an adaptive backstepping excitation control, tuned using particle swarm optimization (PSO), is designed for stability enhancement of multi-machine power systems. The interconnection terms are considered as uncertain functions of electric power and its derivative whose parameters are adapted using PSO. The proposed technique is illustrated on a 50-machine-145-bus system, which shows that the designed controllers are effective in stabilizing the system under severe contingencies and perform better when compared with conventional power system stabilizers