Control of Storage Batteries Using a Disturbance Observer in Load Frequency Control for Large Wind Power Penetration

In Japan, the deviation in frequency caused by the increase in the amount of renewable energy introduced in power systems soon will become a major problem. Researchers use storage batteries for power systems to balance supply and demand. However, storage batteries are still inferior to pumped-storage plants in terms of cost and durability. In this paper, we propose a novel LFC method using a disturbance observer and storage batteries. Simulations confirm the proposed method can reduce the amount of tie-line power flow deviations significantly.