智能电网既包含连续性系统，又包含离散性系统，具有较强的构造混杂性与动态演化性，传统的分析方法不能满足智能电网的需求；电力信息物理融合，简称电力CPS（Cyber Physical System，CPS），是智能电网发展过程中必须要解决的科学问题，电力系统与电力信息系统的统一建模与分析方法成为研究电力CPS的关键任务之一。本项目将在分析电力CPS功能与非功能属性的基础上，通过建立基于扩展混合Petri网的电力CPS时空模型与行为模型，刻画系统的稳态特征与动态特征，进一步研究电力CPS的构造性与演化性，并最终揭示基于Petri网的电力CPS系统宏观层面的行为特征与微观层面的时空特征之间的协同关联性。该项目的研究成果将为智能电网的状态评估、故障诊断及预测、可靠性分析等领域提供理论与技术支撑，对实现智能电网具有重要的理论意义与潜在的应用价值。

Smart grid contains both continuous and discrete system, with high hybrid structure and dynamic evolution, the traditional analysis method can not meet the requirements of smart grid; cyber physical power system, referred to as the Power CPS, is the vital scientific issue in the development of smart grid, unified modeling and analysis methods of power system and power information system has become one of the keytasks of Power CPS. The project will be based on the analysis of Power CPS functional and non-functional attributes, through establish the Power CPS’s spatio-temporal model and behavior extended hybrid Petri nets model, describe the steady-state features and dynamic features, and further on, research the structure and evolution of Power CPS, and finally reveal the coordinated relationship between Power CPS's macro-level behavior characteristics and the micro-evel spatial and temporal characteristics based on Petri nets. The research results of this project will provide theoretical and technical support for the field of smart grid state assessment, fault diagnosis and prediction, reliability analysis, has important theoretical significance and potential application value on the realization of smart grid.