Attention is focused to the automatic feedwater control at low power in NPP as it has relatively high impacts on the reactor shutdown.

• 本文针对压水堆核电厂在低功率运行时蒸汽发生器水位控制容易造成停堆的实际情况,提出了蒸汽流量的估算方法,设计了以模糊控制为核心的水位控制器。