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A scheme for on line fault detection in a power system is introduced in this paper. The scheme is based on the use of a sliding mode observer where an appropriate set of output measurements is utilized to detect the onset of faults in the transmission network of the power system in real time and on-line. The power system considered in this study comprises a generating unit connected to an infinite...
A new technique for fault diagnosis and estimation of unknown inputs in a class of non-linear systems is presented in this study. The novelty of the approach is based on utilisation of a network of two interconnected sliding mode observers, the first is used for fault diagnosis and the second is used for estimation of unknown inputs. The two observers exchange information about their respective reconstructed...
This paper presents a new technique for fault diagnosis and estimation of unknown inputs in a class of nonlinear systems. The novelty of this approach is governed by the design of two nonlinear observers which incorporate a combination of sliding and integral control actions. The observers are networked together. The first is used for fault diagnosis and the second is used for the reconstruction of...
In this paper, a new approach to estimation of unknown inputs and faults in a class of nonlinear systems is presented. The approach is based on the design of a cascade connection of two sliding mode observers. The first is used for estimation of state and unknown inputs and the second is used for fault detection. An important feature of the proposed approach is that the state trajectories do not leave...
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