Core Insights - The project "Research and Empirical Demonstration of Advanced Composite Energy Storage Intelligent Collaborative Control Technology under Spot Market" has successfully passed inspection, marking China's first achievement in the collaborative control and large-scale application of a composite energy storage system integrating four types of storage technologies [1][2] - The project focuses on the demand for grid regulation under high proportions of renewable energy integration, overcoming the bottleneck of collaborative control among multiple types of energy storage [1] Group 1 - The project integrates lithium iron phosphate, sodium-ion, all-vanadium flow, and flywheel energy storage technologies, with a total scale of 113.05 MW and 208.6 MWh [1] - It has developed an energy optimization scheduling system, a comprehensive operation and maintenance management platform, and an auxiliary decision-making system for energy storage participation in electricity trading [1] - The project enhances grid flexibility and stability through intelligent collaboration between short-term high-frequency regulation and long-term energy transfer [1] Group 2 - The project has achieved automated operation based on the rules of the Shandong Province electricity spot market, with electrochemical energy storage systems directly accepting grid scheduling [2] - Lithium and sodium-ion batteries complete a 4-hour charge-discharge cycle daily, while all-vanadium flow batteries complete an 8-hour cycle, all without manual intervention [2] - This has effectively expanded new profit growth points, realized normalized trading in the electricity market, and verified the technical feasibility and economic competitiveness of the hybrid energy storage system in a complex electricity market environment [2]