Influence of New Energy Penetration on Frequency Correction Control of Power Grid

In engineering, the frequency correction control system of power grid can restore the frequency to the required range after serious faults of the power grid through the coordination of step difference rounds and fixed control measures. With the increasing proportion of new energy in the power grid, the startup mode of the power grid changes in a wide range with the output of new energy, and the risk of mismatches in fixed frequency correction control strategies continues to increase. A typical system is established to analyzed the relationship between different rounds and control applicability of frequency correction control system. The analysis conclusion points out that the traditional frequency correction control strategy is difficult to adapt to the scenarios where the proportion of new energy is high, and urgent to improve the ability of primary frequency modulation and new control methods.