Simulation study for PSS based on MATLAB

The paper analysed the causes of low-frequency oscillations,as well as the inhibitory action of the power system stabilizer (PSS) to low-frequency oscillations.It uses MATLAB to optimize the parameters of PSS and to establish the simulation model of excitation governor system. It verifies the ability of the power system stabilizer to suppress low-frequency oscillations in three modes.The simuliation results illustrated that the PSS with the settings has good inhibitory action to low-frequency oscillations.