CAJ | 학술논문

由于快中子增殖反应堆的功率变化与反应性变化会相互影响,因此很难找到一个有明确物理含义的数学模型;而且其衰变功率在非稳态运行条件下,极易引起反应堆功率控制的过冲现象.针对快堆功率控制的这些特点,把改进后的遗传规划方法与反应堆动态周期方程相结合,得到了一个反应性控制的预测模型,同时对该模型进行了仿真验证.验证结果表明,该反应性预测模型的预测值与实测值吻合很好,总反应性的相对误差率甚至不超过1%,从而可以看出在整个控制过程中没有明显的过冲现象出现,模型性能良好.
유우쾌중자증식반응퇴적공솔변화여반응성변화회상호영향,인차흔난조도일개유명학물리함의적수학모형;이차기쇠변공솔재비은태운행조건하,겁역인기반응퇴공솔공제적과충현상.침대쾌퇴공솔공제적저사특점,파개진후적유전규화방법여반응퇴동태주기방정상결합,득도료일개반응성공제적예측모형,동시대해모형진행료방진험증.험증결과표명,해반응성예측모형적예측치여실측치문합흔호,총반응성적상대오차솔심지불초과1%,종이가이간출재정개공제과정중몰유명현적과충현상출현,모형성능량호.
It is difficult to find an unambiguous physical meaning model for fast breeder reactor(FBR),because the interaction between the power variation and the reactivity change is very complex. And under the non-steady condition of decay power,it is easy to appear the over-shooting situation in reactor power manipulation(RPM). According to these RPM characteristics , the advanced genetic programming approach(GPA)and dynamic period equa-tion(DPE)were combined,then a predictive reactivity regulation model was obtained. At last,the model was veri-fied through simulation. The results show that the predictive values and measured values are much closed,and the relative error rates of total relativity are all not more than 1%. During the whole RPM,it is obvious that the over-shooting does not appear. So the model has good performance.