Posts in category Cyber-Tech

Physical System Consequences of Unobs...

Physical System Consequences of Unobservable State-and-Topology Cyber-Physical Attacks

This paper studies the physical consequences of a class of unobservable state-and-topology cyber-physical attacks in which both state and topology data for a sub-network of the network are changed by an attacker to mask a physical attack. The problem is formulated as a two-stage optimization problem, which aims to cause overload in a line of […]

Cloud-Assisted IoT-Based SCADA System...

Cloud-Assisted IoT-Based SCADA Systems Security: A Review of the State of the Art and Future Challenges

Industrial systems always prefer to reduce their operational expenses. To support such reductions, they need solutions that are capable of providing stability, fault tolerance, and flexibility. One such solution for industrial systems is cyber physical system (CPS) integration with the Internet of Things (IoT) utilizing cloud computing services. These CPSs can be considered as smart […]

A Bayesian Algorithm to Enhance the R...

A Bayesian Algorithm to Enhance the Resilience of WAMS Applications Against Cyber Attacks

Monitoring critical infrastructures is highly dependent on the accuracy of the installed sensors and the robustness of estimation algorithms. Data-injection attacks can degrade the operational reliability and security of any cyber-physical infrastructures. An attacker can compromise the integrity of the monitoring algorithms by hijacking a subset of sensor measurements and sending manipulated readings. Such approach […]

Front Lines Against the Darkness: Enh...

Front Lines Against the Darkness: Enhancing the Resilience of the Electricity Grid Through Microgrid Facilities

Power grids are supposed to be fault-tolerant, but you doubt the premise when you consider daily outages in more populated parts of the world and more recent brownouts and blackouts globally.Power engineers have been pushing forward the frontiers of power systems, and the hard-fought battle against the darkness is supposed to have been won, but […]

Smart Grids: A Cyber–Physical Systems...

Smart Grids: A Cyber–Physical Systems Perspective

Smart grids are electric networks that employ advanced monitoring, control, and communication technologies to deliver reliable and secure energy supply, enhance operation efficiency for generators and distributors, and provide flexible choices for prosumers. Smart grids are a combination of complex physical network systems and cyber systems that face many technological challenges. In this paper, we […]

Masking Transmission Line Outages via...

Masking Transmission Line Outages via False Data Injection Attacks

Today’s power systems become more prone to cyber-attacks due to the high integration of information technologies. In this paper, we demonstrate that the outages of some lines can be masked by injecting false data into a set of measurements. The success of the topology attack can be guaranteed by making that: 1) the injected false […]

MAS based distributed automatic gener...

MAS based distributed automatic generation control for cyber-physical microgrid system

The microgrid is a typical cyber-physical microgrid system (CPMS). The physical unconventional distributed generators (DGs) are intermittent and inverter-interfaced which makes them very different to control. The cyber components, such as the embedded computer and communication network, are equipped with DGs, to process and transmit the necessary information for the controllers. In order to ensure […]

Information-Theoretic Security in Sto...

Information-Theoretic Security in Stochastic Control Systems

Infrastructural systems such as the electricity grid, healthcare, and transportation networks today rely increasingly on the joint functioning of networked information systems and physical components, in short, on cyber-physical architectures. Despite tremendous advances in cryptography, physical-layer security and authentication, information attacks, both passive such as eavesdropping, and active such as unauthorized data injection, continue to […]

Cyber-Based Contingency Analysis

Cyber-Based Contingency Analysis

Microprocessor-based relays protecting against fault current have revolutionized power automation industry. The leverage using commercially available information communication technologies has been the currency for future cyberinfrastructure deployment, which enables plausible electronic manipulation that can affect system operation. The bus differential protection has been recognized as one of the most critical protection schemes, if compromised, that […]

A Survey of Cyber-Physical Advances a...

A Survey of Cyber-Physical Advances and Challenges of Wind Energy Conversion Systems: Prospects for Internet of Energy

Wind energy has the biggest market share of renewable energy around the world. High growth and development rates of wind energy lead to a massive increase in complexity and scale of wind energy conversion systems (WECSs). Therefore, it is required to upgrade methods and strategies for design and implementation of WECS. Considering WECS as cyber-physical […]