The growing diffusion of non-programmable renewable generation and the future phase-out of coal plants will cause significant problems in the coming years in terms of the need to compensate for the variability of electricity generation and to reduce the inertia of the Italian electricity system.
This has entailed and will entail the continuous reduction of the “rotating masses” (the alternators connected to the turbines of the thermoelectric plants) of the electrical system and the consequent decrease in the inertia of the system.
In an electrical system, any imbalance between generation and power requirement causes, in the first moments, a slowing or acceleration of the rotating masses which corresponds to a frequency variation.
