核电厂反应堆最佳估计功率监测法的研究

Study on Best Estimate Power Monitor for Nuclear Power Plant Reactor

反应堆功率是核电机组运行中的关键参数,其测量值对机组安全和经济运行均具有重要意义。反应堆功率测量值通常采用热平衡方法计算得到,但电厂运行经验表明功率测量值可能会出现高估或低估的情况。因此为在早期识别热平衡法功率测量值存在的潜在漂移或偏差,验证测量值的准确性,有必要引入反应堆功率监测手段。最佳估算功率监测法(BEPM)是美国核电厂反应堆功率监测的常用方法。本文重点研究了BEPM的数学原理和计算方法,通过举例介绍和讨论了该方法的工程应用。

Reactor thermal power is a key parameter for nuclear power plant operation,and its measured value plays an important role in the safe and economic operation of the plant.It is normally used the thermal balance method to obtain reactor power measured value,but the experience of power plant operation shows this value may be overestimated or underestimated.Therefore,in order to identify potential power measurement drift or error in the early stage and verify the accuracy of the measured value,the reactor power monitor method is necessary employed.The best estimated power monitor method(BEPM)is a common reactor power monitor method used in the American nuclear power plant.This paper focuses on the mathematical principles and calculation method of BEPM,then introduces and discusses the engineering application of this method by example.