CAJ | 학술논문

为了实现CANDU堆换料方案的快速评价,本文提出了线性敏感矩阵方法(LSM).该方法基于各种扰动引起的堆芯状态变化互不干涉且堆芯对扰动的响应与扰动量成正比的假设,借助于事先针对参考堆芯形成的敏感矩阵,主要的堆芯参数经简单代数运算就可得到,无需耗时的三维扩散方程求解.秦山三期1号机组部分运行历史检验结果表明,该方法不但可大幅提高换料方案评价的速度,而且还具有较高的精度,能满足现场工程应用的要求.
위료실현CANDU퇴환료방안적쾌속평개,본문제출료선성민감구진방법(LSM).해방법기우각충우동인기적퇴심상태변화호불간섭차퇴심대우동적향응여우동량성정비적가설,차조우사선침대삼고퇴심형성적민감구진,주요적퇴심삼수경간단대수운산취가득도,무수모시적삼유확산방정구해.진산삼기1호궤조부분운행역사검험결과표명,해방법불단가대폭제고환료방안평개적속도,이차환구유교고적정도,능만족현장공정응용적요구.
In order to develop a numerical tool for the fast evaluation of CANDU refuelling schemes, a Linear Sensitivity Matrix method (LSM) is developed. It assumes that all the effects caused by various perturbations to the core state are independent to each other and the core response to a perturbation is proportional to its magnitude. In this way, the main core parameters of a refuelling scheme can be derived by simple algebraic operations with the use of pre-calculated sensitivity matrices, without resorting to the complicated and time-consuming 3D core calculation. Verification against the QinShan CANDU reactor operation history demonstrates that LSM is capable of generating accurate results and running very fast for evaluating a refuelling scheme.