improving power system security using corrective control actions and pso algorithm

ensuring secure operation of power system is always concerned by researchers and system operators. due to the non-linear and multi objective environments, the problem of maintaining system security is complex. in this paper, a new method was proposed to improve the security of power system using corrective control actions. the voltage and overload violations were coordinately evaluated. in previous researches, the control actions of overload or voltage violation scenarios might worsen the other violations. in the present paper, the control actions which are planned for overloads can also improve the voltage violations and vice versa. the main purpose of the study was to detect the overload and voltage violations and recover the system by planning suitable control actions. in order to optimize the objective function of the security problem, the pso algorithm was used. the proposed method was implemented on the 30 bus ieee standard system. the simulation results confirmed that the performance of the proposed method is suitable.