摘要
一点法是一种先进的堆外探测器校刻系数方法。该方法仅需一个实测通量图数据,避免了传统的多点法可能引发堆芯氙震荡问题。本文基于现有一点法,结合最小二乘思想,提出了一种新的校刻系数法。该方法利用堆芯求解器CORCA-3D模拟堆芯状态,并通过最小二乘拟合方法获得堆外校刻系数。利用核电厂实测通量图结果,验证所提出的方法的精度,结果显示,功率和ΔI二者的相对偏差均低于0.2%。
The single-point method is an advanced method for obtaining the calibration coefficients of the excore detectors.It only requires one measured flux map,avoiding the shortcomings of the traditional multi-point method,which may cause core xenon oscillation.Based on the existing single-point method,and combined with the idea of least squares method,a new calibration coefficient determination method is proposed.This method simulates the core power distribution under the different states using the core solver CORCA-3D and obtains the excore calibration coefficient based on the least squares fitting method.The accuracy of the proposed method is verified by using the measured flux map results of the nuclear power plant,showing that the relative deviation between the incore and excore of the power and ΔI is less than 0.2%.
作者
蔡云
胥俊勇
刘同先
黄灿
肖鹏
高露露
秦雪
吴丹蕾
CAI Yun;XU Junyong;LIU Tongxian;HUANG Can;XIAO Peng;GAO Lulu;QIN Xue;WU Danlei(National Key Laboratory of Nuclear Reactor Technology,China Institute of Nuclear Power,Chengdu 610213,China;Hainan Nuclear Power Co.,Ltd,Changjiang,Hainan Province 572733,China)
出处
《现代应用物理》
2025年第4期65-69,共5页
Modern Applied Physics
基金
国家自然科学基金资助项目(12475183)
中核集团基础研究基金资助项目(CNNC-JCYJ-202217)。
