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从分析压水堆核电机组二回路结构特点入手，推导出二回路汽轮机装置功率方程和热平衡方程的一般线性形式、附加成分的修正方法，并在此基础上给出了应用矩阵分析方法进行压水堆核电机组二回路热经济性计算的基本方法和一个实际算例。矩阵分析法用于核电机组二回路分析计算具有数理概念清晰、计算简单、便于编程的诸多优点，是理论分析和工程计算的有力工具。
Based on the analysis of the structural characteristics of the secondary circuit of PWR nuclear power plant, the general linear form of the power equation and the heat balance equation for the steam turbine of the secondary circuit are derived. The correction method of additional components is also given. Based on this, Fundamental Methods and a Practical Example of Thermal Economy Calculation of Heap Reactor of Nuclear Power Plant. The matrix analysis method is applied to the analysis and calculation of the secondary circuit of nuclear power generating units and has many advantages such as clear mathematical concept, simple calculation and convenient programming. It is a powerful tool for theoretical analysis and engineering calculation.