PMU-Based FOPID Controller of Large-Scale Wind-PV Farms for LFO Damping in Smart Grid

Due to global warming problems and increasing environmental pollution, there is a strong tendency install apply renewable energy power plants (REPPs) around the world. On other hand, with development of information communication technology (ICT) infrastructures, systems are using these infrastructures act as smart grids. In fact, future modern should be considered grids many small large scale REPPs. One main challenges REPPs uncertainty fluctuation electrical generation. Accordingly, suitable solution can combination different types So, penetration rate large-scale wind-PV farms (LWPF) expected increase sharply in coming years. Given that LWPFs added grid or will replace fossil fuel plants, they able play important roles synchronous generators such low-frequency oscillation (LFO) damping. this paper, an LFO damping system suggested for LWPF, based on phasor measurement unit (PMU)-based fractional-order proportional–integral–derivative (FOPID) controller wide range stability area proper robustness uncertainties. Finally, performance proposed method evaluated under operating conditions benchmark system.