压水反应堆堆芯功率对轴向功率偏差的影响分析

The Influence Analysis for the Reactor Rower upon the Axial Power Deviation

本文以CNP600型机组为研究对象,通过理论分析和堆芯核设计程序模拟计算,分析了堆芯功率对轴向功率偏差的影响。结果表明,对于一个平衡循环,堆芯功率和轴向功率偏差的对应关系接近二次函数,二次函数的特性与堆芯装载模式和堆芯燃耗深度有关系。堆芯功率对轴向功率偏差的影响对轴向功率偏差的控制具有重要意义。

In this paper,the CNP600 unit is taken as the case of study the influence of the reactor power upon the axial power deviation is analyzed through theoretical analysis and the Core Design program simulation calculation.The results show that for a balanced cycle,the relationship between the deviation of the reactor power and the axial power is close to the quadratic function,and the characteristics of the quadratic function are related to the core loading mode and core burn-up.The influence of the reactor power upon the axial power deviation is of great significance to the control of the reactor axial power deviation.