A tractable nonlinear fault detection and isolation technique with application to the cyber-physical security of power systems

Abstract

This article consists of two parts: a theoretical part concerned with fault detection schemes, and an application part dealing with cyber security of power systems. In the first part, 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 they are 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 in the presence of certain disturbance signatures. To this end, we formulate the pr..