Secondary System Design of Electrochemical Energy Storage Power Station Based on Hierarchical Control

To address challenges in electrochemical energy storage power stations-including multi-level data transmission redundancy in secondary systems, poor coordination between power regulation and safety protection, and weak collaborative control capabilities-the paper proposes a hierarchical control-based secondary system. Adopting a three-tier architecture (equipment layer, unit layer, and system layer), the design integrates high-coupling-modularization principles to establish a functional coordination framework. By incorporating hybrid integer programming algorithms and model predictive control strategies, combined with power regulation, balanced distribution, and dynamic threshold calculation models, precise coordination across all levels is achieved. Using a 10 MW/20 MWh electrochemical energy storage power station as a case study, performance comparisons with traditional centralized and distributed decentralized control methods demonstrate superior results: power regulation accuracy of 98.6%, battery cluster balance of 97.2%, fault response time of 32 ms, and grid dispatch tracking error of 1.1%. This design significantly enhances system control precision, operational stability, and safety reliability, effectively meeting the refined operation and maintenance requirements of real-world power stations.