CAJ | 학술논문

本工作提出两种基于空间统计性理论的堆芯功率分布重构算法：普通克里金方法是一种基于空间自协方差的最优插值法；卡尔曼滤波方法是一种有效结合理论计算与测量数据的数据同化方法。应用秦山第二核电厂3号机组和大亚湾核电站1号机组的测量数据对上述两种方法的功率分布重构精度进行了验证，并与耦合系数法（CECOR）的重构精度进行了比较。结果表明，两种方法的重构误差均满足工程要求，且重构精度优于耦合系数法。
본공작제출량충기우공간통계성이론적퇴심공솔분포중구산법：보통극리금방법시일충기우공간자협방차적최우삽치법；잡이만려파방법시일충유효결합이론계산여측량수거적수거동화방법。응용진산제이핵전엄3호궤조화대아만핵전참1호궤조적측량수거대상술량충방법적공솔분포중구정도진행료험증，병여우합계수법（CECOR）적중구정도진행료비교。결과표명，량충방법적중구오차균만족공정요구，차중구정도우우우합계수법。
Two core power distribution reconstruction methods based on spatial statisti-cal theory were proposed .Ordinary Kriging method is an optimal interpolation method based on spatial autocovariance and Kalman filter method is one of the data assimilation methods w hich could combine theoretical computation and measurements effectively . Measurement data from Unit 3 reactor of Qinshan No .2 Nuclear Power Plant and Unit 1 reactor of Daya Bay Nuclear Power Plant were used to verify the accuracy of these meth-ods ,and comparisons were made between these methods and the coupling coefficients method .The results show that the reconstruction errors of two methods satisfy the re-quirement of engineering and the reconstruction accuracies of two methods are better than the coupling coefficients method .