|Hierarchical Reasoning about Faults in Cyber-Physical Energy Systems using Temporal Causal Diagrams|
The resiliency and reliability of critical cyber physical systems like electrical power grids are of paramount importance. These systems are often equipped with specialized protection devices to detect anomalies and isolate faults in order to arrest failure propagation and protect the healthy parts of the system. However, due to the limited situational awareness and hidden failures the protection devices themselves, through their operation (or mis-operation) may cause overloading and the disconnection of parts of an otherwise healthy system.
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International Journal of Prognostics and Health Management
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