Frequency Response Enhancement of Hybrid Power System by using PI Controller Tuned with PSO technique

Hybrid power systems have been designed to consist of wind and diesel power plants, as these types of power systems can reduce the harmful effects of conventional diesel-only power plants. Wind power is more commonly used in this set up and preserves the generating margin of doubly fed induction generators (DFIG) under varying wind speeds and changing load conditions, which plays a significant role in the frequency response enhancement in this work. The generation load balance has been maintained using the PI controller optimized by the Particle Swarm Optimization (PSO) technique for diesel power plants as well as the preserved generating margin of the DFIG. The simulation results in MATLAB/SIMULINK show that the proposed scheme of enhancing the frequency response reduces the power demand on diesel power plants by using the preserved generating margin of wind power plants to maintain the generation load balance.