To solve the problems of slow milling response and poor control precision occurred in direct-blow pulverizing systems

a novel pulverizing system adding small pulverized coal silos is designed

and the corresponding air-powder control strategy is proposed. Moreover

based on the dynamic simulation model of an ultra-supercritical unit

the operation and control strategy of the novel pulverizing system is simulated and validated. The results demonstrate that

the proposed control strategy enables precise and rapid response of air-powder parameters. In the load response simulation tests conducted within the load variation range of 75%～85% of rated load

after the small pulverized coal silos were put into operation

the load response rate of the unit's model can reach 5%/min and recover stability faster. Therefore

the novel pulverizing system and its operational control strategy significantly enhance the unit flexibility. The research provides a viable technical approach and guidance for improving the flexibility of coal-fired boilers.