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1.空天信息安全与可信计算教育部重点实验室,武汉大学国家网络安全学院,湖北省武汉市 430072
2.武汉大学电气与自动化学院,湖北省武汉市 430072
3.南瑞集团有限公司(国网电力科学研究院有限公司),江苏省南京市 211106
4.国电南瑞科技股份有限公司,江苏省南京市 211106
5.智能电网保护和运行控制国家重点实验室,江苏省南京市 211106
陈洋荣(1989—),女,博士研究生,主要研究方向:网络安全、电网信息物理系统。E-mail:yangrong_chen@whu.edu.cn
李俊娥(1966—),女,通信作者,教授,主要研究方向:网络安全、电网信息物理系统、电力工控安全。E-mail:jeli@whu.edu.cn
许昂(1993—),男,硕士研究生,主要研究方向:电网信息物理系统。E-mail:catcherxa@163.com
收稿日期:2020-03-16,
修回日期:2020-06-07,
网络出版日期:2020-08-11,
纸质出版日期:2021-02-10
移动端阅览
陈洋荣,李俊娥,许昂等.智能变电站信息物理融合可靠性评估方法[J].电力系统自动化,2021,45(3):102-110.
CHEN Yangrong,LI Jun'e,XU Ang,et al.Reliability Evaluation Method for Smart Substation Based on Cyber-Physical Fusion[J].Automation of Electric Power Systems,2021,45(3):102-110.
陈洋荣,李俊娥,许昂等.智能变电站信息物理融合可靠性评估方法[J].电力系统自动化,2021,45(3):102-110. DOI: 10.7500/AEPS20200316001.
CHEN Yangrong,LI Jun'e,XU Ang,et al.Reliability Evaluation Method for Smart Substation Based on Cyber-Physical Fusion[J].Automation of Electric Power Systems,2021,45(3):102-110. DOI: 10.7500/AEPS20200316001.
智能变电站具备信息物理融合系统特征,其可靠性评估应从信息物理系统视角展开。分析了智能变电站物理侧和信息侧的可靠性因素及其相互影响,提出了考虑设备重要度的二次设备可靠性指标和考虑传输数据可靠性的通信链路可靠性指标,并给出了设备重要度的层次分析模型;指出智能变电站可靠性评估应考虑电网扰动和复杂运行状态对量测信息正确性的影响,且信息侧及信息-物理交互影响对智能变电站可靠性影响的问题可以转换为测量和控制报文可靠性对断路器动作可靠性影响的分析问题,进而提出了考虑信息侧影响和信息-物理交互影响的断路器等效可靠性计算方法;在此基础上,给出了基于贝叶斯网络的智能变电站可靠性评估方法。最后,通过算例验证了文中方法的合理性。
Smart substation has the characteristics of cyber-physical system (CPS). Thus its reliability evaluation should be conducted from the overall perspective of CPS. Firstly
reliability factors on the physical side and cyber side of smart substation
and the interaction between them are analyzed. The reliability index of the cyber equipment considering the equipment importance and the reliability index of communication links considering the reliability of the data transmission are proposed. Meanwhile
the analytic hierarchy process (AHP) model of the importance degree of cyber equipment is presented. Then
it is pointed out that the reliability evaluation of smart substation should consider the effect of power grid disturbance and complicated operation states on the correctness of measurement information. Moreover
the problem that the effect of the cyber side and cyber-physical interactions on the reliability of smart substations can be converted into the problem for analyzing the effect of measurement and control messages on circuit breaker (CB) operation. Finally
the equivalent reliability calculation methods of CB considering the effect of the cyber side and cyber-physical interactions are put forward. Based on this
the reliability evaluation method of smart substation based on Bayes network method is given
and the rationality of the proposed method is verified through the case study.
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