直接优化方法在核电厂堆芯换料中的可行性研究  

Feasibility Study on NPP Loading Pattern Search via Direct Optimization Method

作　　者：许花[1] 蒋校丰[1] 张少泓[1] 

机构地区：[1]上海交通大学核科学与工程学院,上海200240

出　　处：《核动力工程》2010年第2期131-135,共5页Nuclear Power Engineering

摘　　要：本文尝试使用直接优化方法求解核电厂换料优化问题。通过在中子扩散方程中引入0-1决策变量,直接将换料方案优化这一物理问题转化为数学规划问题,并通过调用商用数学规划问题求解器,一次性完成方案的搜索与评价;通过自行构造的一维和二维算例,对方法的可行性进行了研究。结果表明,直接优化方法有能力搜索出高质量的方案,甚至是全局最优解。目前该方法的搜索速度还不能满足工程应用的要求。The direct optimization method based on the mixed integer linear programming is proposed to solve the very involved nuclear power plant loading pattern search problem.By the introduction of 0-1 decision variables into the neutron diffusion equation,the original loading pattern search problem is converted to an equivalent mathematical programming problem,and then the loading pattern search and evaluation processes are completed synchronously by exploiting the powerful commercialized mathematical programming problem solver.In this paper,the feasibility of the proposed method is preliminarily demonstrated by its test applications to a 1D and a 2D problem.Numerical results reveal that the proposed method is capable of finding good loading patterns,even the global optima.However,since the current model still takes too much time to find the optima,the proposed method needs to be further improved before it can be ready for engineering application.

关 键 词：换料优化 直接优化方法 混合整数规划 

分 类 号：TL384[核科学技术—核技术及应用]