104 / 2025-04-18 08:46:56

Research on the Design of Control Strategy and Capacity Optimization for the Hybrid Energy Storage System Assisting Thermal Power Frequency Modulation Based on Harris Hawk Optimization Algorithm

Supercapacitor; Hybrid Energy Storage; Control Strategy; Capacity Allocation

This paper configures supercapacitors and lithium batteries proportionally to leverage their respective strengths, enhance the frequency - regulation performance of coal - fired units, and ensure optimal economy, which is crucial for frequency - regulation - oriented energy storage projects. Firstly, it proposes a coordinated control strategy for a hybrid energy storage system that balances frequency regulation and battery lifespan, and introduces a two - level capacity optimization model for supercapacitor - based hybrid energy storage. Secondly, an improved Harris Hawks Optimization algorithm is applied to solve the model. Finally, the effectiveness of the proposed model is verified. It can be shown that it improves the overall frequency regulation index of coal - fired units and maximizes net revenue over the lifecycle.