Determination method and device for online protection setting value of deviated nucleate boiling ratio

• Main Authors: HUANG DAISHUN, XU LIANGJIAN, HUANG HUIJIAN, CUI HUAIMING, REN CHUNMING, CHEN SHILONG, LU YILI, ZHANG YU, WANG XIAOYU, CHEN XI
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2023
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR POWER PLANT; NUCLEAR REACTORS; PHYSICS

The invention belongs to the technical field of nuclear reactor engineering, and particularly relates to a method and a device for determining an online protection setting value of a deviation nucleate boiling ratio. The method comprises the following steps: processing the uncertainty of main parameters required by online DNBR calculation by adopting a statistical method, and establishing an online DNBR safety limit value; and determining a DNBR online protection setting value by combining the DNBR advanced protection amount and the online DNBR safety limit value determined by accident analysis. According to the method, the operation condition of the reactor core can be described more timely and accurately, the shutdown signal can be sent out, and the economical efficiency and safety of a unit are improved. 本申请属于核反应堆工程技术领域，具体涉及一种偏离泡核沸腾比在线保护整定值确定方法及装置；该方法，包括：将在线DNBR计算所需的主要参数的不确定性，采用统计学方法进行处理，建立在线DNBR安全限值；结合事故分析确定的DNBR提前保护量和在线DNBR安全限值，确定DNBR在线保护整定值。该方法能够更适时、准确地描述堆芯的运行状况及发出停堆信号，提高机组经济性和安全性。