考虑拓扑相关和双重耦合的电力信息物理系统建模与脆弱性分析  

Modeling and Vulnerability Analysis of Electric Cyber Physical System Considering Topological Correlation and Double Coupling

作　　者：张艺伟 刘文霞 刘耕铭 黄少锋 ZHANG Yiwei;LIU Wenxia;LIU Gengming;HUANG Shaofeng(State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),北京市昌平区102206

出　　处：《中国电机工程学报》2021年第16期5486-5499,共14页Proceedings of the CSEE

基　　金：国家重点研发计划项目(2020YFC0827001)。

摘　　要：为更好地揭示电力信息物理系统(electric cyber physical system,ECPS)的脆弱性特征,该文考虑拓扑相关和双重耦合建立ECPS相依网络模型并对其进行脆弱性分析。首先,计及节点频率控制能力,建立复杂电力网络模型;其次,考虑电力/通信节点和线路双重结构耦合,结合光纤通信网结构特征和组网约束,研究基于电力子网的通信网结构生成方法,综合结构耦合和双向差异化功能耦合,建立ECPS相依网络模型;随后,基于事故链理论,提出ECPS连锁故障分析方法;最后,以某省级电网为例生成通信网络,通过结构特征对比验证方法有效性,并深入分析节点脆弱性新特性、线路耦合深度和信息失效对相变特性的影响以及不同通信业务影响的差异性和阶段性,研究成果能够为ECPS规划和韧性提升提供有效的理论支撑。In order to further reveal the vulnerability characteristics of Electric Cyber Physical System(ECPS),this paper considered topological correlation and double coupling to establish the ECPS interdependent network model and analyzes its vulnerability.Firstly,taking account the node frequency control capability,the complex power network was established.Secondly,considering the coupling of node and line structure,the structural characteristics and networking constraints of optical fiber cyber network,the generation method of cyber network structure based on power subnet was studied.An ECPS interdependent network model was established by combining structural coupling and bidirectional differential functional coupling.Then,based on the accident chain theory,an ECPS interlocking fault analysis method was proposed.Finally,a provincial power grid was taken as an example to generate a cyber network;simulation results show the validity of the model.The characteristics of node vulnerability,the influence of line coupling depth and information failure on phase transition characteristics,as well as the difference and stage of the influence of different communication services were analyzed in depth.The results can provide effective support for ECPS planning and toughness improvement.

关 键 词：电力信息物理系统 结构耦合 相依网络 脆弱性分析 

分 类 号：TM76[电气工程—电力系统及自动化]