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1.强电磁工程与新技术国家重点实验室(华中科技大学),湖北省武汉市 430074
2.国家电网公司华中分部,湖北省武汉市 430077
王梓宇(1996—),男,博士研究生,主要研究方向:电力信息物理系统建模及仿真、电力系统信息通信安全。E-mail:ziyuwangseee@hust.edu.cn
王镜毓(1993—),男,博士研究生,主要研究方向:电力系统信息通信安全、人工智能在电力系统中的应用。E-mail:jywang@hust.edu.cn
谢俊(1980—),男,博士,高级工程师,主要研究方向:电力系统自动化与智能电网。E-mail:xjvhj@163.com
石东源(1974—),男,通信作者,博士,教授,主要研究方向:电力系统分析计算、电力系统软件技术及电力系统信息安全。E-mail:dongyuanshi@hust.edu.cn
收稿日期:2021-01-08,
修回日期:2021-05-19,
网络出版日期:2021-07-30,
纸质出版日期:2021-10-25
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王梓宇,王镜毓,谢俊等.面向数据可用性的电力通信系统静态分层建模方法[J].电力系统自动化,2021,45(20):9-17.
WANG Ziyu,WANG Jingyu,XIE Jun,et al.Static Layered Modeling Method of Power Communication Systems for Data Availability[J].Automation of Electric Power Systems,2021,45(20):9-17.
王梓宇,王镜毓,谢俊等.面向数据可用性的电力通信系统静态分层建模方法[J].电力系统自动化,2021,45(20):9-17. DOI: 10.7500/AEPS20210108003.
WANG Ziyu,WANG Jingyu,XIE Jun,et al.Static Layered Modeling Method of Power Communication Systems for Data Availability[J].Automation of Electric Power Systems,2021,45(20):9-17. DOI: 10.7500/AEPS20210108003.
电力通信系统的正常运行是保障电力系统量测数据和控制命令可靠传输、维持电力系统安全稳定运行的基础。传统的电力通信系统静态模型忽略不同节点功能的差异性,难以同时描述物理与逻辑支路的多层次连接状态,无法准确刻画各种信息物理风险事件下信息流的变化情况。针对这一问题,提出了面向数据可用性的电力通信系统静态分层建模方法。该方法利用物理层到会话层的直接/间接邻接矩阵与层间映射依赖关系,自底向上对信息的传输与处理过程展开详细建模,能更全面地分析信息物理风险事件导致的信息流变化情况,为更准确地开展信息物理交互影响分析和风险评估等研究奠定基础。对复杂风险事件下的IEEE 9节点和IEEE 118节点系统进行了信息物理混合仿真分析,验证了所提方法的有效性。
The regular operation of the power communication system is the basis of ensuring the reliable transmission of measurement data and control commands
and maintaining the safe and stable operation in power systems. The conventional static models of power communication systems ignore the differences in the functions of different buses
making it hard to characterize the multi-layer connection status of physical and logical links simultaneously. Moreover
it is also inapplicable to precisely describing the changing situation of information flow under various cyber-physical contingencies. Regarding these issues
a static layered modeling method of power communication systems for data availability is proposed. From the physical layer to the session layer
the proposed method employs direct/indirect adjacency matrices and the cross-layer dependencies to model the transmission and processing of the information from bottom to top in detail. The yielded model can more comprehensively analyze the changes of the information flow under cyber-physical contingencies
and thus lay the foundation for more accurate interaction impact analysis and risk assessment in cyber-physical power systems. The effectiveness of the proposed method is verified through the analysis of cyber-physical co-simulation in the IEEE 9-bus system and IEEE 118-bus system under complex contingencies.
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