Towards resilient design of distribution grid automation system : an evaluation of its reliability against random failures and susceptibility to targeted attacks

Sadu, Abhinav; Monti, Antonello (Thesis advisor); Srivastava, Anurag (Thesis advisor)

Aachen : E.ON Energy Research Center, RWTH Aachen University (2022)
Book, Dissertation / PhD Thesis

Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2021

Abstract

A resilient Distribution Grid Automation (DGA) system ensures safe and reliable operation of active distribution grids and its supply security . For resilient design of the DGA system its reliability against random component failures and the susceptibility to targeted attacks must be evaluated, so that appropriate component redundancies and cyber & physical security measures could be implemented. Hence, a Continuous Time Markov Chain(CTMC) based methodology, incorporating the Multi Domain ReliabilityMatrix (MDRM) is proposed for the reliability evaluation DGA systems that captures the cyber-physical interdependence. Furthermore, to evaluatethe susceptibility of the DGA systems against cyber-physical attacks and study the impact of the security counter measures, a CTMC based methodology incorporating a Multi-Criteria-Decision-Making methodology is presented. Finally, a Blockchain, and Smart contract based resilient design of DGA systems is proposed that ensures high availability of DGA functions even against random failures and targetted attacks on the DGAsystems.

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