Application of different optimization techniques to load frequency control in a multi-area system

Nowadays a large power system usually comprises of small interconnected power systems each one is called an area so large power system is called a multi area system. Each area is connected to the other one by a tie line. During load change in one area, the frequency and the tie line power of the whole system deviate from the nominal values. The purpose is to get the best performance of the deviations using designed controllers. Proportional-Integral-Derivative (PID) controller & Proportional-Integral-Derivative and Acceleration (PIDA) controller are the two controllers used and three optimization techniques are applied to optimize the controllers' parameters. The optimization techniques used are Teaching-Learning-Based-Optimization (TLBO), Harmony Search Algorithm (HS) and Sine-Cosine Algorithm (SCA). Results are obtained and Comparison is done between the two controllers and between the three optimization techniques as will be reviewed in the paper.