Optimal Frequency Regulation Support from PV Power Plants in a Renewable Incorporated Grid

The increased penetration of photovoltaic (PV) systems into conventional grids affects the frequency stability of such grids substantially. Instead of depending on expensive external storage systems to address the stability concern, PV systems can take part in frequency regulation via the deloading mechanism. However, an optimal level of deloading is crucial to avoid excessive economic burden while still maintaining adequate frequency stability. To that end, this research proposes a novel methodology for finding the optimal deloading percentage of deloaded PV systems. This approach utilizes the particle swarm optimization (PSO) algorithm, which is subjected to various frequency parameters and generation constraints. In a customized IEEE 39 Bus New England system, the method is implemented on different levels of PV integration cases.…