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1.电网智能化调度与控制教育部重点实验室(山东大学),山东省济南市 250061
2.山东劳动职业技术学院,山东省济南市 250022
王超超(1994—),男,硕士研究生,主要研究方向:电力信息物理融合系统脆弱性评估。E-mail:980856837@qq.com
董晓明(1980—),男,通信作者,副研究员,硕士生导师,主要研究方向:电力系统运行分析与控制。E-mail:dongxiaoming@sdu.edu.cn
孙华(1979—),女,硕士,讲师,主要研究方向:电力系统分析与控制。E-mail:22478249@qq.com
收稿日期:2020-01-09,
修回日期:2020-04-20,
网络出版日期:2020-06-24,
纸质出版日期:2021-02-10
移动端阅览
王超超,董晓明,孙华等.考虑多层耦合特性的电力信息物理系统建模方法[J].电力系统自动化,2021,45(3):83-91.
WANG Chaochao,DONG Xiaoming,SUN Hua,et al.Modeling Method of Power Cyber-Physical System Considering Multi-layer Coupling Characteristics[J].Automation of Electric Power Systems,2021,45(3):83-91.
王超超,董晓明,孙华等.考虑多层耦合特性的电力信息物理系统建模方法[J].电力系统自动化,2021,45(3):83-91. DOI: 10.7500/AEPS20200109004.
WANG Chaochao,DONG Xiaoming,SUN Hua,et al.Modeling Method of Power Cyber-Physical System Considering Multi-layer Coupling Characteristics[J].Automation of Electric Power Systems,2021,45(3):83-91. DOI: 10.7500/AEPS20200109004.
从信息物理融合的角度出发,综合考虑电力网、通信网和信息网的关联关系和耦合特性,提出了一种电力信息物理系统分层建模方法。首先,提出了考虑多层耦合特性的电力信息物理系统三层模型框架。然后,基于电网稳态潮流方程,考虑通信传输过程和信息决策过程,对电力网、通信网和信息网进行了分层次建模。针对信息网的监控功能和信息流的传递方向不同,建立了负责信息传递的上行/下行通信通道模型,再以网间接口模型关联电力网、通信网和信息网,推导出考虑多层耦合的电力信息物理系统一体化模型,显现了电力网、通信网和信息网的功能关系。最后,用IEEE 9节点和39节点系统构建的电力信息物理系统模型,基于潮流计算和拓扑分析方法,以最小切负荷为优化目标,定量推演信息网的感知决策过程和模型参数的变化对电网运行状态的影响,验证了所提出建模方法的有效性,适用于分析网络攻击、连锁故障演化机理等场景。
From the perspective of cyber-physical fusion
comprehensively considering the association and coupling characteristics of the power grid
communication network and information network
a hierarchical modeling method for power cyber-physical system (CPS) is proposed. Firstly
a three-layer model framework of power CPS considering multi-layer coupling characteristics is proposed. Secondly
based on the power flow equation in power grid
considering communication transmission and decision-making processes of information
the layered model of power grid
communication network and information network is established. In view of the monitoring function of information network and the different directions of information transmission
an upward/downward communication channel model for information transmission is established. Then
interface model is used to associate with the power grid
communication network and information network
and an integrated model of power CPS considering multi-layer coupling is introduced
which shows the function relationships of the power grid
communication network and information network. Finally
IEEE 9-bus system and 39-bus system are utilized to construct the model of power CPS. Based on the power flow calculation and topology analysis method
taking the minimum load loss as the optimization objective
the impact on power grid operation related to the decision-making process of the information network and the changes of model parameters is simulated by quantitative analysis. The effectiveness of the proposed model is verified and the proposed modeling method is suitable for analyzing scenarios such as cyber attacks and evolution mechanisms of cascading failure.
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