计算核反应堆堆芯功率的热平衡试验

Heat Balance Test for Determined Reactor Core Power

反应堆功率运行时,燃耗变化会引起堆外中子通量密度变化,造成RPN核功率测量系统测得的反应堆功率与实际功率出现偏差。为了保证RPN反应堆堆芯功率测量的正确,大亚湾核电站利用热平衡的方法,即利用能量平衡原理计算反应堆堆芯的功率,然后对RPN测得的反应堆堆芯功率数据进行校核。本文主要对热平衡测量核反应堆堆芯功率的方法,计算原理进行全面的描述。

When the reactor is operating,the variation of the burn-up of the fuel will cause vari-ation of the neutron flux,which can make the core power measured by the RPN nuclear power system deviate from the actual power.To guarantee the core corrective of the core power date,method of heat-balance is used in DAYA BAY nuclear power plant,which is by utilizing the theory of Energy Conservation;then calibrate the core power data which measured by RPN system.This paper mainly describes the method by which the core power is measured and the calculation theory of the heat-bal-ance.