Load Frequency Control using PID Algorithm in Multiarea of Power System for Uncertain Load Conditions

AGC stands for Automatic Generation Control Performance a very important role to ensure the capability, credibility, and reliability of interconnected power systems for active power transitions. In order to achieve the stability in between the demand & supply, automatic action is required to stabilize the frequency deviations caused during load fluctuations in the respective power system area. In this paper, a two-area electrical power system is formulated as well as modeled in MATLAB/Simulink environment. The deviating performance of the interconnected power systems has been observed during different load conditions. The different control algorithms such as Integrator(I), Proportional Integral (PI), & Proportional Integral Differential (PID) are applied to mitigate perturbations in AGC's parameters like frequency, mechanical power output, and power of tie-line respectively. The hit and trial strategy has opted to tune up controller gains. The performance has been validated through simulated results. At the later stage, the PID controller has outperformed as compared to its counterparts based on settling time and magnitude of error during sudden load demand variations in a power system area.