压水堆核电厂应对全厂断电的电源设计

The Power Supply Design to Deal with Station Blackout Failure in PWR NPP

全厂断电是导致核电厂发生严重事故的主要初始事件之一,增强应对全厂断电的能力将进一步加强核电厂纵深防御,提高排出堆芯余热和保持安全壳完整性的能力,降低堆芯熔化概率,福岛核事故后核电厂更加重视提高全厂断电的应对能力。本文对我国现有核电堆型CPRl000核电厂及其改进型堆、AP1000核电厂、EPR核电厂在应对全厂断电工况时的电源设计情况进行总结说明。

Station blackout failure（SBO）is one of the major initial events leading to serious accidents in nuclear pow er plants,enhancing the ability to deal w ith SBO w ill further strengthen the nuclear pow er plant defense in depth,improve the ability to remove the core heat and maintain the integrity of the reactor,reduce the core melt probability,After the Fukushima accident,nuclear pow er plant pay more attention to improve the pow er of the plant＇s response capacity of SBO.The design of pow er supply of CPR1000 and evolutionary CPR1000,AP1000 and EPR nuclear pow er plant in China are summarized in this paper.