公开(公告)号：EP4432302A1

公开(公告)日：2024-09-18

申请号：EP22894078.9

申请日：2022-01-13

申请人： China Nuclear Power Technology Research Institute Co., Ltd ,  China General Nuclear Power Corporation ,  CGN Power Co., Ltd. ,  China Nuclear Power Engineering Co., Ltd.

发明人： LU, Xianghui ,  HU, Yisong ,  FENG, Yingjie ,  ZHANG, Yijun ,  WANG, Weiru ,  HU, Yousen ,  LI, Kejia ,  HE, Mingtao ,  HUANG, Yu ,  WU, Yuting ,  CHEN, Tianming ,  MAO, Yulong ,  ZHANG, Wei ,  PENG, Sitao ,  CHENG, Yanhua

IPC分类号： G21C17/00 ,  G21C17/108

CPC分类号： Y02E30/30

摘要： An online protection method and system. The online protection method comprises: obtaining calibration state data that is periodically updated (S10); performing reconstruction calculation on reactor core power distribution data corresponding to the total rod positions of control rods (S20); obtaining the current total rod position of each control rod in real time, and selecting a group of reactor core power distribution data from a plurality of groups of reactor core power distribution data as the current reactor core power distribution data (S30); calculating a maximum LPD value and a minimum DNBR value corresponding to the current total rod position of the control rod (S40); and according to the calculated maximum LPD value, the calculated minimum DNBR value, a preset LPD setting value, and a preset DNBR setting value, determining whether to trigger a reactor shutdown signal (S50).