论文部分内容阅读
SOPHORA是中广核集团自主研发的基于堆内固定式探测器(FID)的堆芯三维在线监测系统。根据测量的FID读数和堆芯状态参数,结合堆芯核设计软件COCO和热工子通道分析软件LINDEN,SOPHORA重构出“最佳估算”的三维功率分布,并给出功率峰值裕量和热工DNB裕量等重要运行参数。以某三环路电站的可移动式探测器(MID)实际测量数据为基础,模拟FID测量数据作为SOPHORA的输入。从SOPHORA的功率峰值(F_q,F_(dh),F_z,DNBR)的输出结果与中广核集团自主研发的MAPLE通量图处理软件的实测功率峰值进行对比,F_q,F_(dh),F_z的平均偏差分别为0.7%,0.13%,0.4%,DNBR的最大偏差仅1.4%,该结果表明,SOPHORA的堆芯三维功率重构的结果是合理可信的。
SOPHORA is a core three-dimensional on-line monitoring system based on the FID of China Guangdong Nuclear Power Group. According to the measured FID readings and the core state parameters, combined with the core design software COCO and the thermal subchannel analysis software LINDEN, SOPHORA to reconstruct the “best estimate” three-dimensional power distribution and give the power peak margin And thermal DNB margins and other important operating parameters. Based on the actual measurement data of a mobile sensor (MID) of a third-ring power station, the FID measurement data is simulated as the input of the SOPHORA. The output from SOPHORA peak power (F_q, F_ (dh), F_z, DNBR) is compared with the measured peak power of MAPLE flux graph processing software independently developed by CGNPC. The average deviations of F_q, F_ (dh) and F_z Respectively, 0.7%, 0.13% and 0.4%, respectively. The maximum deviation of DNBR is only 1.4%. The results show that the SOPHORA core 3D power reconstruction results are reasonable and credible.