根据先进型沸水堆(advance boiling water reactor，ABWR)核电机组热力系统的结构特点，基于热力系统等效热降分析方法和矩阵方法，确定其主、辅系统的划分原则以及辅助汽水成分划分原则，对先进型沸水堆各种汽水成分进行归并处理，构建表达规则的先进型沸水堆核电机组汽水分布方程填写规则，推导出适合先进型沸水堆核电机组热力系统热经济性分析的通用矩阵方法，并给出该类型核电机组辅助汽水成分对热经济性影响的表达方式。该矩阵全面反映了先进型沸水堆核电机组热力系统主系统和各种辅助系统对机组热经济性的影响状况，每个子矩阵物理意义明确、规律性强，可使先进型沸水堆核电机组热力系统的整体计算和局部分析变得清晰、简单，适合于计算机程序化，并通过实例对该方法进行了验证。

Considering the thermal system distinguishing feature of advance boiling water reactor (ABWR) nuclear power plant, a steam-water distribute state equation had been established and a matrix for calculating the efficiency was derived by the aquivalent enthalpy drop theory, the theory of matrix and the normal thermal-equilibrium method, suitable for quantitative thermal efficiency analysis of thermodynamic system of ABWR nuclear power unit. The structure of this matrix has a mapping relationship with the thermodynamic system of ABWR nuclear power unit, and it can simplify the thermal economic analysis of ABWR nuclear power plant, and provides a theoretic principle for analysing the economics of the thermal system of ABWR nuclear power unit. An example was given to illustrate the validity of the method, and it indicated that the thermal economics diagnostic method is well defined and easy to be used in system design and operation diagnosis.

华北电力大学青年教师科研基金项目(200711029)。