Power quality enhancement in grid tied hybrid system using chicken swarm optimization algorithm optimized shunt filter

Power quality enhancement or harmonic content reduction is the major issue in the power transmission system of real-time applications. The issue is caused due to the variation in load and DC voltage supplied. Even though many control methods are suggested in the literature, they have the problem of complexity and steady-state error. Hence, this paper presents a novel technique to reduce harmonics in the system under different disturbances from load. The variations in DC voltage supplied by renewable sources are reduced by using a fractional order proportional integral derivative controller. Then, to solve the issue of power quality here, a shunt active power filter is used with a proportional integral derivative controller optimized by the chicken swarm optimization algorithm. The proposed work is implemented in MATLAB/Simulink to validate the performance under sag, swell, source disturbance, disturbed source, and load conditions and show its effectiveness. When compared with the artificial intelligence technique, the proposed method reduces the THD to 24.3 % with an operating time of 356.87 ms.