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Mitigation and Protection: a Fault Detection Approach for AGC Security


P. Mohajerin Esfahani

VIKING progress report, Manheimm

In this talk we develop a tractable approach to design a robust residual generator to detect and isolate faults in high dimensional nonlinear systems. Previous approaches on fault detection and isolation problems are either confined to linear systems or only applicable to low dimensional dynamics with more specific structures. In contrast, we propose a novel methodology to robustify a linear residual generator for a nonlinear system with respect to certain disturbances. To this end, we formulate the problem into the framework of quadratic programming problems which are solvable for relatively high dimensional systems. We validate the performance of the proposed algorithm on two-area power network in order to diagnose a cyber-physical attack in Automatic Generation Control.


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