Abstract: Based on the domestic simulation support platform vPower, we established a simulation model of the core system, primary circuit, secondary circuit, tertiary circuit and main instrumentation and control system of large sodium-cooled fast reactor. We simulated and analyzed the dynamic response characteristics of the main system under the emergency shutdown condition of a large pool-type sodium-cooled fast reactor, and compared and verified the simulation calculation results with the real reactor test data. The results show that the deviation between the simulation calculation results and the real reactor operation data under the full power steady-state condition is less than 1%, the simulation calculation results fit well with the real reactor data under the emergency shutdown transient state, and the change trend of the main variables is basically consistent, which can accurately reflect the dynamic characteristics of the main reactor system.

Key words: pool-type sodium-cooled fast reactor, emergency shutdown, coordinated control of whole plant, simulation calculation