STEAM GENERATOR WATER-LEVEL CONTROL METHOD AND SYSTEM AFTER SHUTDOWN OF PRESSURIZED WATER REACTOR

摘要

The present application relates to a steam generator water-level control method and system after shutdown of a pressurized water reactor. The method comprises: according to a thermal power load signal of a reactor core during reactor shutdown, generating a steam generator water-level setting value and a steam generator water-supply flow signal under the reactor shutdown; generating a reactor shutdown steam generator water-level control signal; executing steam generator water-level control logic; and switching the steam generator water-level control logic into automatic control after a preset duration. The problem of water-level deviation, which is caused by means of thermal hydraulic parameter perturbation after reactor shutdown in different initial states, of a steam generator being too large is solved, and a reactor device is prevented from being damaged because the water level of the steam generator is too high or too low, thereby preventing abnormal adjustment of the steam generator after reactor shutdown, and thus improving the stability of the steam generator.