PCI二类工况瞬态分析计算流程自动化技术研究

Research on Automation Technology of PCI Condition Ⅱ Transients Analysis Process

对PCI二类工况瞬态分析方法中的分析流程、初始轴向功率偏移与氙瞬态的关系、各程序间的数据交换等进行了研究。利用初始轴向功率偏移与氙浓度随时间的振荡关系,以及轴向功率偏移振荡幅值随初始碘浓度的变化关系,得到了一种能够获得目标初始轴向功率偏移的计算思路。研究了SMART程序的运行方式、输入数据文件格式。利用脚本编程,得到了一组程序,实现了PCI二类工况瞬态分析计算流程中各程序间数据的自动交换,实现了计算流程的自动驱动、迭代,实现了PCI二类工况瞬态分析计算流程的自动化。利用这组程序对两个项目中的PCI二类工况进行了瞬态分析,结果表明,分析是可靠的,采用这组程序能够大幅提高PCI二类工况瞬态分析的效率。

The analysis procedures,the relationship between initial axial power offset and xenon transient,and the data exchange between three codes in the analysis method on PCI condition Ⅱ transients are studied in the paper.To make use of the initial axial power offset and xenon concentration versus time oscillation law,and the law of oscillation amplitude value of axial power offset versus initial iodine concentration,a calculation method that can obtain the target value of initial axial power offset is been found.The relationship between data file and graphical interfaces,and the data format are known by study on the data file in SMART＇s working directory.Because of these studies,a set of codes is been created.Use these codes can achieve the automatic data exchange and the calculation procedure＇s automatic drive and iteration.Use these codes can achieve the automatic calculation of PCI condition Ⅱ transients＇ analysis.In two projects,these codes are been used to analyze the PCI conditionⅡtransients.The result is shown that the analysis is reliable.Use these codes can increase of the analysis efficiency very much.