The Instantaneous Spectral Entropy for Real-time, Online Structural Health Monitoring.

Civera, Marco; Surace, Cecilia

doi:10.1088/1742-6596/2184/1/012033

Cited by 2 publications

(1 citation statement)

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“…In its standard definition, it has been applied to stationary signals for the Structural Health Monitoring of masonry buildings [23,24] and steel pipelines [25,26]. In previous studies, ISE was validated for an aluminium frame structure undergoing structural changes under controlled laboratory conditions [27]. However, to the best of the Authors' knowledge, it has never been investigated for condition monitoring purposes, let alone on experimental data originating from wind turbines under operating conditions.…”

Section: Introductionmentioning

confidence: 99%

An Application of Instantaneous Spectral Entropy for the Condition Monitoring of Wind Turbines

Civera

Surace

2022

Applied Sciences

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For economic and environmental reasons, the use of renewable energy sources is a key aspect of the ongoing transition to a sustainable industrialised society. Wind energy represents a major player among these natural, carbon-neutral sources. Nevertheless, wind turbines are often subject to mechanical faults, especially due to ageing. To alleviate Operation and Maintenance costs, Vibration-Based Inspection and Condition Monitoring have been proposed in recent times. This research proposes Instantaneous Spectral Entropy and Continuous Wavelet Transform for anomaly detection and fault diagnosis, departing from gearbox vibration time histories. The approach is validated on experimental data recorded from a turbine suffering bearing failure and total gearbox replacement. From a computational point of view, the proposed algorithm was found to be efficient and therefore even potentially applicable for real-time monitoring.

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