零功率反应堆传递函数的实验测量

Experimental Measurement of Zero Power Reactor Transfer Function

为研究零功率反应堆的传递函数,先以点堆动态方程为出发点,推导零功率反应堆对外加反应性扰动输入响应的传递函数理论表达式。然后,对外加反应性扰动为三角波时进行傅里叶分析,得到传递函数与输入频率及反应性之间的关系。最后,选取DF-Ⅵ快中子临界装置进行验证实验。在测量了扰动的反应性后,给出确定频率的外加扰动为三角波时的传递函数实验值,实验值与传递函数的理论计算值相符合,证实了零功率反应堆传递函数的理论表达式是正确的,反之,也可从已知的传递函数求出扰动的反应性。

In order to study the zero power reactor（ZPR） transfer function,the ZPR transfer function expression was deduced with the point reactor kinetics equation,which was disturbed by reactivity input response.Based on the Fourier analysis for the input of triangular wave,the relation between the transfer function and reactivity was got.Validating research experiment was made on the DF-Ⅵ fast ZPR.After the disturbed reactivity was measured,the experimental value of the transfer function was got.According to the experimental value and the calculated value,the expression of the ZPR transfer function is proved,whereas the disturbed reactivity is got from the transfer function.