Load Frequency Control Techniques

In the proposed paper, we have presented the need for Load Frequency Control (LFC) of an interconnected multi-area power to minimize the transient deviations in area frequency and tie-line power interchange and to ensure their steady state errors are zeros. In this paper, the Load Frequency Control achieved by implementation of one of the following conventional controller strategies: Proportional Integral (PI1) controller, Proportional IntegralDerivative (PID2) controller, Fuzzy logic control (FLC3) is explained along with the emerging paradigm and recently introduced Active Disturbance Rejection Control (ADRC 4 ) Technique. PI is a centralized controller technique which is tuned based on the trial-and-error approach whereas PID follows a decentralized discrete system controller technique and can be tuned using any soft computing technique. Fuzzy Control is a commonly used soft computing technique based on the system called fuzzy logic used for tuning the controllers. A controller is designed using any of the above method strategies and tuned using soft computing technique. ADRC is based on Extended State Observer (ESO) theory, an extension of the system model representing things which engineer doesn't include in Mathematical expression. ADRC controller can be easily deployed using any hardware-software platform.