纵深防御理念下的核电机组调频能力深化研究  

Deepening Research on the Frequency Control Capacity for Nuclear Power Plant under the Concept of Defense in Depth

作　　者：王煦嘉[1] 齐军 沙正峰 Wang Xujia;Qi Jun;Sha Zhengfeng(Shanghai Nuclear Engineering Research&Design Institute Co.,Ltd.,Shanghai 200233,China;Shandong Nuclear Power Company,Co.,Ltd.,Yantai 265116,China)

机构地区：[1]上海核工程研究设计院股份有限公司,上海200233 [2]山东核电有限公司,烟台265116

出　　处：《核安全》2024年第3期25-32,共8页Nuclear Safety

摘　　要：通过调研总结了国内、国外核电机组在调频方面的设计和运行经验,以国和一号调频能力深化研究为例,提出了开展核电机组调频能力优化评估的基本思路:首先是确定调频能力的优化目标;然后基于优化目标开展可行性评估,包括全寿期内反应堆冷却剂压力边界的完整性,控制棒和控制棒驱动机构的使用情况,以及运行中可能的技术风险;最后基于核安全纵深防御的理念提出了调频运行相关的安全改进措施,包括调频运行的投运和退出限制条件。深化研究表明,以包络EUR、URD和我国火电机组下限调频能力要求为优化目标,并考虑必要的纵深防御安全措施,国和一号具备进一步开展调频能力优化的技术可行性。Through research,the design and operation experience of domestic and foreign nuclear power units in grid’s frequency control are summarized.Taking the deepening research on frequency control capacity of CAP1400 as an example,the basic ideas for carrying out optimization evaluation of frequency control capacity of nuclear power units are proposed:firstly,the optimization objective of frequency control capacity is determined;then,the feasibility evaluation is carried out based on the optimization objective,including:the integrity of reactor coolant pressure boundary during the whole life period,the use of control rods and control rod driving mechanisms,and possible technical risks in operation;finally,based on the concept of depth defense of nuclear safety,the safety improvement measures related to frequency control operation are proposed,including the operation and exit restrictions of frequency control operation.The deepening research shows that,with the optimization objective of enveloping EUR,URD and the lower limit of frequency control capacity requirements of Chinese thermal power units,and considering the necessary depth defense safety measures,CAP1400 has the technical feasibility to further carry out frequency control capacity optimization.

关 键 词：一次调频 二次调频 设计瞬态 纵深防御 

分 类 号：TL3[核科学技术—核技术及应用]