A new robust load frequency control design using sequential quadratic programming (SQP) method

This paper presents a new technique for tuning the parameters of a PID controller for load frequency control (LFC) using sequential quadratic programming (SQP) method. In this method the frequency deviation of the system is directly utilized to tune the controller parameters. Simulations are carried out with considering the effect of generation rate constraints (GRC) and the governor limiters. Comparative results of the proposed method and a conventional PI controller show its robustness with a satisfactory response when the parameters of the system change.