Modeling of Intrusion and Defense for Assessment of Cyber Security at Power Substations

Chen, Ying; Hong, Junho; Liu, Chen‐Ching

doi:10.1109/tsg.2016.2614603

Cited by 61 publications

(29 citation statements)

References 44 publications

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“…Chen et al [3] propose a modeling of cyber security status of the digital substation by the Markov decision process (MDP), but it only focuses on the design of the detection of cyber security attacks in a limited-use case. Moreover, the model does not consider cyber-physical analysis concerning IEC 62351-7-based network and system management.…”

Section: Of 24mentioning

confidence: 99%

“…This specification focuses on power system infrastructure to address telecommunication management, as well as cyber security monitoring and management. Previous literature [1,2] has provided a transformation of IEC 62351-7, so that it can be implemented.Chen et al [3] propose a modeling of cyber security status of the digital substation by the Markov decision process (MDP), but it only focuses on the design of the detection of cyber security attacks in a limited-use case. Moreover, the model does not consider cyber-physical analysis concerning IEC 62351-7-based network and system management.In further literature from Cai et al [4], the authors review cyber challenges in the digital substation and analyze several secure communication mechanisms of the IEC 62351 standard.…”

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confidence: 99%

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Behavior Analysis and Anomaly Detection for a Digital Substation on Cyber-Physical System

et al. 2019

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The electric power system infrastructure has begun to adopt digital information technologies such as transmission control protocol/internet protocol (TCP/IP) and Ethernet infrastructures. With this adoption, information technology-centric network and system management (NSM) tools are used to manage the intermediate communication systems and electric devices in digital substations. However, the technology to monitor the cyber–physical System (CPS) statistics for the intelligent electronic devices (IEDs) and serial communication for a digital substation does not exist yet. In this paper, we aim to propose cyber-physical analysis methodologies of a digital substation system, concerning issues of (1) International Electrotechnical Commission (IEC) 62351-7 based network and system management, (2) behavior analysis of the CPS, (3) cyber–physical anomaly detection systems, and (4) a testbed for a digital substation. By collaborating with Electric Power Research Institute (EPRI), a cyber security testbed for the digital substation has been developed to implement the use cases and analyze potential security threats. Newly integrated methodologies for information handling are expected to lead to improved safety and reliability for the CPS of electric power grid systems.

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Section: Of 24mentioning

confidence: 99%

mentioning

confidence: 99%

Behavior Analysis and Anomaly Detection for a Digital Substation on Cyber-Physical System

et al. 2019

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“…The probability of a cyber-intrusion can be approximated by the Poisson distribution of the number of vulnerabilities discovered by the attacker. 98 Models of intrusion and defense in competition for control of the substations are proposed using Markov decision process (MDP). By solving the MDP models, the optimal strategies of both the attacker and defender can be obtained.…”

Section: Security and Reliabilitymentioning

confidence: 99%

A review on the features and technologies for energy efficiency of smart grid

Anjana¹,

Shaji

2017

Int J Energy Res

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Summary In today's world striving for efficiency in every sector, especially power generation and distribution, smart grids emerge as the solution for efficiently meeting the increasing demand. They adjust themselves to optimally deliver energy at the lowest cost and highest quality possible. The grid successfully makes use of renewable energy resources, electric vehicles, and smart pricing techniques in its attempt to achieve energy efficiency. It also promotes a greener environment by striving to reduce greenhouse gas emissions. Information communication technology (ICT) helps the grid in collecting consumption data from the consumers and in sharing tariff information. ICT also helps to gather information about the status of the grid with regard to aspects like power quality, faults etc. The purpose of this paper is to review recent literature with a view to comprehensively present the technologies employed in the smart grid for achieving energy efficiency and the challenges involved therein.

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“…In this paper, the cyberattack techniques and security countermeasures of SASs are analyzed according to some military cyberspace security research and the IEC 62351 standard series. Based on these analyses as well as the works in References [23,24], a conditional probability of intrusion given an alarm is redefined to model the probability of a successful cybersecurity event happening to an SAS from the defender's perspective. Then, the logical structure of an SAS according to the IEC 61850 series is described by a modified hypergraph model which is helpful to simulate the effect propagation process after a cyberattack.…”

Section: Introductionmentioning

confidence: 99%

Supporting Sustainable Maintenance of Substations under Cyber-Threats: An Evaluation Method of Cybersecurity Risk for Power CPS

Fan

Zhang

et al. 2019

Sustainability

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In the increasingly complex cyber-environment, appropriate sustainable maintenance of substation auto systems (SASs) can lead to many positive effects on power cyber-physical systems (CPSs). Evaluating the cybersecurity risk of power CPSs is the first step in creating sustainable maintenance plans for SASs. In this paper, a mathematical framework for evaluating the cybersecurity risk of a power CPS is proposed considering both the probability of successful cyberattacks on SASs and their consequences for the power system. First, the cyberattacks and their countermeasures are introduced, and the probability of successful cyber-intruding on SASs is modeled from the defender’s perspective. Then, a modified hypergraph model of the SAS’s logical structure is established to quantitatively analyze the impacts of cyberattacks on an SAS. The impacts will ultimately act on the physical systems of the power CPS. The modified hypergraph model can describe more information than a graph or hypergraph model and potentially can analyze complex networks like CPSs. Finally, the feasibility and effectiveness of the proposed evaluation method is verified by the IEEE 14-bus system, and the test results demonstrate that this proposed method is more reasonable to assess the cybersecurity risk of power CPS compared with some other models.

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Modeling of Intrusion and Defense for Assessment of Cyber Security at Power Substations

Cited by 61 publications

References 44 publications

Behavior Analysis and Anomaly Detection for a Digital Substation on Cyber-Physical System

Behavior Analysis and Anomaly Detection for a Digital Substation on Cyber-Physical System

A review on the features and technologies for energy efficiency of smart grid

Supporting Sustainable Maintenance of Substations under Cyber-Threats: An Evaluation Method of Cybersecurity Risk for Power CPS

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