Diagnosis of sensor failure detection and information rebuilding using Polynomial Chaos Theory

Li, Huimin; Monti, Antonello

doi:10.1109/imtc.2009.5168551

Cited by 2 publications

(2 citation statements)

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“…In this work, by leveraging on the characteristics of PCT (detailed in [16]) to propagate uncertainty power system, it enables, in principle, the propagation of power system uncertainties in real time, given a known probability PDF of the main uncertainty sources. This feature, which has been shown to be a way to determine the boundaries of the dynamic behavior of the system [19], can be used to generate the thresholds for validating sensor behavior in the work here. It should be underlined that the proposed algorithm could still fail if the system changes so dramatically that the model becomes unreliable.…”

Section: Sensor Failure Detection and Information Rebuildingmentioning

confidence: 99%

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Digital automatic voltage regulator for synchronous generator considering sensor failure

et al. 2011

Int Trans Elec Energy Syst

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SUMMARY In this paper, digital signal processor (DSP) based automatic voltage regulator (AVR) for synchronous generator is proposed. The control performance of AVR is guaranteed to be more reliable by the application of measurement validation method based on Polynomial Chaos Theory. Analysis and development of the proposed regulator is done by both computer simulations and DSP implementation. A hardware platform of the AVR, which consists of two DSPs as the microprocessor is set up, one DSP is used for calculation of the sampled data and sensor validation, the other is used for control algorithm application. Several other methods have also been adopted in the configuration of the hardware for a better dynamic performance. Steady state and dynamic control performance of the regulator are investigated on different working conditions (such as voltage establishment, load connection, and sensor failure). Experimental results show good consistency to the theoretical analysis. Copyright © 2011 John Wiley & Sons, Ltd.

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Section: Sensor Failure Detection and Information Rebuildingmentioning

confidence: 99%

“…The excitation current flows through diode VD1 and VD2, then charges the capacitor C. This leads to a larger excitation current decline to accelerate the process of the output voltage drop. The process can be described by Equation (19).…”

Section: Excitation Circuit Designmentioning

confidence: 99%