摘要
近年来,大停电事故表明电力故障的原因不仅停留在电力网,信息网故障也是其中之一。针对电力信息物理系统中信息的网故障问题,利用潮流传输指标、故障潮流分布、对系统安全影响这三个指标提出电力节点关键度定义,将其作为信息网监控系统的功能属性。结合信息网的结构和功能属性对信息节点的综合关键度进行定义。通过对IEEE57节点系统的脆弱性进行评估,发现高综合关键度信息节点故障会对系统造成更大的负荷损失。仿真结果表明,该综合关键度指标可有效识别信息网的关键节点。
In recent years,the blackouts indicate that the cause of power system failures not only stays in the power network,but also includes the information network failure.Aimed at the fault of cyber network in cyber-physical power system,the criticality of a power node is defined by the indices of the power flow transmission,the fault flow distribution,and the influence on system security,which is regarded as the function attribute of information network monitoring system.Combined with the structure and function attributes of cyber network,the composite criticality of cyber node was defined.By evaluating the vulnerability of the IEEE57 nodes system,it is found that the cyber nodes with high composite criticality will cause greater load loss to the system.Simulation results show that the composite criticality indicators can effectively identify the criticality nodes of the cyber network.
作者
陈世明
王聪
Chen Shiming;Wang Cong(School of Electrical and Automation Engineering,East China Jiaotong University,Nanchang 330013,Jiangxi,China)
出处
《计算机应用与软件》
北大核心
2021年第12期50-55,共6页
Computer Applications and Software
基金
国家自然科学基金项目(11662002)。
关键词
电力信息物理系统
脆弱性
综合关键度
潮流
Cyber-physical power system
Vulnerability
Composite criticality
Power flow
