电力系统信息物理融合建模与综合安全评估:驱动力与研究构想  

Power System Cyber-physical Modelling and Security Assessment: Motivation and Ideas

作　　者：郭庆来[1] 辛蜀骏[1] 孙宏斌[1] 王剑辉 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京市海淀区100084 [2]美国阿贡国家实验室,argonneil60439

出　　处：《中国电机工程学报》2016年第6期1481-1489,共9页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2013CB228206);国网科技项目"电网和通信网联合仿真技术基础研究"~~

摘　　要：智能电网与能源互联网都是典型的信息物理融合系统(cyber-physical system,CPS),信息环节的可靠性问题可能导致物理系统的运行风险。为了对其系统及信息故障进行分析评估,文中在分析了对电力系统进行信息物理融合建模与评估的必要性去驱动力后,提出了一种CPS融合建模构想。该方法将CPS系统抽象为一个有向拓扑图,模型将物理系统和信息系统中的状态量统一抽象为"数据节点",将信息处理、信息传输等环节抽象为"信息支路"。在此基础上,系统的信息-能量流可通过矩阵运算的方式快速简单地进行量化计算,与一般的迭代计算和仿真方法相比,该方法可有效提升计算速率。最后,对信息物理系统的综合安全评估技术体系进行了展望。Smart grid is a typical cyber-physical system（CPS）, in which the disturbance on cyber part may result in the operation risks on physical systems. In order to perform system assessment and contingency analysis for the cyber-physical power grid, we first reviewed the significance and necessity of the CPS assessment for the power system, and proposed an analytic cyber-physical modeling architecture to describe the couple relationship of cyber and physical systems adopting graph theory, set theory and matrix theory afterwards. In this model, the HCS cyber network can be abstracted to a directed graph consisting of data nodes and directed branches. This model supports hybrid computing of the system information-energy flow with matrix transformation and operations, which has a higher computational efficacy while ensure some accuracy compared with simulation-based approaches. At last, we also explored the outlook of the future cyber-physical security assessment for the power system.

关 键 词：信息物理融合系统 智能电网 能源互联网 建模 安全评估 

分 类 号：TM76[电气工程—电力系统及自动化]