Application and comparison of switching control algorithms for power system stabilizer

An application of two switching control algorithms for the power system stabilizer (PSS) is introduced in this paper to enhance damping during low frequency oscillations in a power system followed by the comparison of the results due to these algorithms. Algorithm 1, is based on Lyapunov´s stability theorem while algorithm 2, switches such a way that state trajectory is driven on to (n-1) dimensional stable hyper-plane. In the context of power systems, experimental comparison of the two switching algorithms promises theoretical insights for better algorithms in future. The feedback switching control models presented here is tested on the SMIB linearised phillips heffron model of a power system using MATLAB/SIMULINK @ platform.