基于反应堆噪声技术的零功率堆绝对功率测量系统设计  

The Design of Absolute Power Measurement System of Zero Power Reactor Based on Reactor Noise Analysis Technology

作　　者：彭翠云[1] 肖德涛[1] 刘才学[2] 

机构地区：[1]南华大学,湖南衡阳421001 [2]中国核动力研究设计院,四川成都610041

出　　处：《核电子学与探测技术》2009年第3期665-668,共4页Nuclear Electronics & Detection Technology

摘　　要：系统利用反应堆噪声分析技术测量零功率堆缓发临界状态下的堆动态参数和绝对功率。在靠近堆芯对称布置两个γ补偿电离室,电离室探测到的反应堆中子噪声信号经测量系统调理和采集后,运用LabVIEW平台开发的软件对噪声信号进行分析处理得到互谱密度,用非线性最小二乘法拟合得到动态参数,并由算法计算出零功率堆的绝对功率。经实地测量,动态参数和绝对功率与堆运行参数相吻合。The system carries out the Measurement of reactor kinetic parameters and absolute power of zero Power Reactor in the delayed critical state, using reactor noise analysis technology. Two V-compensation ionization chambers are placed symmetrically close to the core. After being detected in the chambers, the reactor neutron noise signal shall be modulated and collected by measurement system. Then the noise signal shall be analysed by the software based on Labview to get cross-power spectral densities. The kinetic parameters are obtained from Nonlinear least-squares fitting of cross-power spectral densities. Absolute power of zero power reactor shall be obtained by algorithm. After field measurement, kinetic parameters and absolute power are identical with reactor operation parameters .

关 键 词：反应堆中子噪声 LABVIEW 互谱密度 动态参数 绝对功率 

分 类 号：TL375.2[核科学技术—核技术及应用]