Frequency stability model for energy transition studies in Spain

The electricity sector is facing a deep and fast process of change following the energy transition pace. In the next decade, the expected amount of renewables in the system will increase dramatically. One of the main concerns of system operators (such as Red Eléctrica de España -REE-) is the decrease of system inertia and, in general, assuring frequency stability in the future system. This article presents how REE has developed and tuned a model that allows frequency stability accurate analyses about RoCoF, frequency nadir and steady state frequency, in yearly basis taking only as input data the hourly dispatch of market model simulations and considering the peripheral position of the Iberian Peninsula within the Continental Europe system.