项目以核电站数字化仪控系统为研究对象，结合理论分析和过程仿真实验，探究强动态交互、强非线性和高度不确定性等多因素耦合作用下的核电站数字化仪控系统复杂动态运行失效机理及其对系统动态过程可靠性建模的影响机理，建立基于系统状态概率映射矩阵编码的Markov/CCMT动态可靠性通用模化机制，通过核电大数据同化算法研究，提出一种基于数据融合的核电站数字化仪控系统动态可靠性模型同化分析新方法，开发矩阵式编码动态智能深度优化搜索分析算法，突破大型复杂核电站数字化仪控系统动态可靠性精准建模和高效计算等瓶颈问题。项目最后将通过核电站具体数字化仪控实例系统，对所提出的基于矩阵编码数据同化的大型复杂核电站数字化仪控系统动态交互过程可靠性模化分析方法进行实践验证。项目系列研究成果可为核电站数字化仪控系统设计安全认证和运行安全指引提供理论基础和技术支撑，推动新一代先进核电站数字化仪控系统的国产化自主研制和应用出口。

In this study, the joint effects of multiple coupling factors of strong dynamic interactions, strong nonlinearity, and high degree of uncertainty on the complex operation mechanisms and behavioral characteristics as well as their impact with reliability modeling of digital instrumentation and control systems in nuclear power plants are investigated using theoretical analysis with process simulation tests. The generic Markov/CCMT modeling mechanism is explored and established for nuclear digital instrumentation and control systems using a matrix-coded system state probabilistic mapping scheme. A novel method for dynamic modeling and data assimilation of digital instrumentation and control systems in nuclear power plants is presented based on the theory study of massive data assimilation and fusion. A matrix-coded dynamic optimization algorithm for intelligent and depth search for high dimensional system state space is developed to resolve the key scientific bottlenecks of accurate dynamic reliability modeling and efficient calculation of digital instrumentation and control systems in nuclear power plants. Finally, the method proposed for dynamic modeling and analysis of digital instrumentation and control systems coupled with complex interactive process in nuclear power plants using a matrix-coded data assimilation scheme will be illustrated and verified with an example case study. The research findings in theories, methods and techniques presented in the project are expected to provide a solid foundation for design safety review and operational safety guarantee, as well as for promoting the development of domestic digital instrumentation and control systems and accelerating the deployment and export of newly advanced nuclear power technologies.