Load Frequency Stabilization Control and Parameter Optimization Method in Isolated Electrolytic Aluminum Industrial Microgrid

Electrolytic aluminum (EA) loads has a large capacity, strong energy storage and fast response characteristics, which can be used as a high-quality resource to consume renewable energy and achieve flexible grid frequency regulation (FR). To improve the frequency stability of isolated power grids for EA, a frequency stabilization control and parameter optimization method considering the load's flexible regulation capability are proposed in this article. The proposed method takes into account the dynamic response characteristics and regulation capacity limit of EA load. Based on frequency deviation information, the FR parameter is adaptively selected, which can make full use of the load's flexible adjustable capacity, while avoiding over-regulation. Simulation results demonstrate that the proposed method can effectively improve the frequency response performance.