Frequency Stabilization Control Method for Industrial Microgrid Considering Inertia Response of Electrolytic Aluminum Load

Faced with the challenge of maintaining system frequency stability because of the significant increase in the proportion of renewable energy on the grid, it is difficult to meet the actual frequency modulation demand by only relying on the frequency modulation response of thermal power units. With its large thermal inertia and fast response speed, incorporating electrolytic aluminum load into the frequency stability control of an industrial microgrid can improve the frequency modulation response performance. By applying inertia response control, the rapidity and flexibility of the frequency modulation response can be further improved. Meanwhile, the load power capacity is fully utilized to reduce the load power fluctuation, which guarantee the safety and stability of electrolytic aluminum production. Finally, the proposed control method is proved to be practical and effective through simulation with an industrial example.