Risk of Loss Power for ATWT in Daya Bay and Ling’ao Nuclear Power Stations

In order to analyze the differences between the Anticipated Transient Without Reactor Trip （ATWT） and other reactor protection methods,this paper analyzes in detail the realizing means of ATWT and the effect of lost of power supply on the units based on Daya Bay and Ling’ao Nuclear Power Stations by system wiring diagram.Based on the comprehensive analysis,this paper proposes the sequence for powering when recovering the power source after ATWT power supply（LCC / LNE） loss for Daya Bay and Ling’ao Nuclear Power Stations.