Study on Improving Flexibility of Supercritical 350MW Heating Unit

Taking a 350 MW unit as the research object, a flexible system coupled with molten salt heat storage was proposed. The unit thermodynamic model was constructed based on Ebsilon software, and the peak-shaving characteristics and thermal economy of the unit after coupling with the molten salt system were simulated and analyzed. The results show that after coupling with the molten salt system, the unit can increase its peak-shaving capacity by 38.1 MW, and the fuel utilization coefficient is lower than that before coupling. It is necessary to combine the local peakshaving subsidy policy to obtain economic benefits.