Automatic Generation Control of Single Area Hybrid Power System

Abstract

In the power system, the load demand is continuously changing as per system requirement and the power system controller should efficiently compensate for the load requirement. The frequency instability may lead to equipment damage, load shedding, and possible blackouts, as a reason frequency is the most important design parameter to achieve the stability of a power system. The stable operation of an interconnected Hybrid Power System depends on a balance between production and consumption centers. To ensure system stability, different control techniques or control algorithms to compensate for the deviations in the system are employed but selecting the proper controller and its correct gain is tedious. In this research paper, the load frequency control of a single area hybrid power system is carried out using the Proportional-Integral and Derivative (PID) controller. The hybrid power system may consist of a renewable energy system (Wind/Solar) and a conventional interconnected power system (Thermal/Hydro). To obtain the optimal tuning of the PID controller, this research utilizes the PID Tuner from MATLAB. The performance of the PID controller for a single area hybrid power system will be analyzed for various load variation cases to show its effectiveness. The proposed PID-based governor provides better frequency control during load variations with smaller overshoot, undershoot, and short settling time of 10 seconds, as compared to P and PI.