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Multisensory collaborative damage diagnosis of a 10MW floating offshore wind turbine tendons using multi-scale convolutional neural network with attention mechanism

Xu, Z, Bashir, M, Yang, Y, Wang, X, Wang, J, Ekere, NN and Li, C (2022) Multisensory collaborative damage diagnosis of a 10MW floating offshore wind turbine tendons using multi-scale convolutional neural network with attention mechanism. Renewable Energy, 199. pp. 21-34. ISSN 0960-1481

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Abstract

An effective damage diagnosis and prognostic management method can considerably reduce operation and maintenance costs of floating wind turbines. In this research, an intelligent damage diagnosis framework, named “MS-ACNN”, has been developed using a multi-scale deep convolution neural network model fused with an attention mechanism. The framework is used to detect, localize, and quantify existing and potential damages on multibody floating wind turbine tendons. The MS-ACNN framework is fitted with two multi-scale extractors, designed to capture multi-scale information from raw wind turbine response signals measured using multi-sensor. The attention mechanism uses weight ratios of extracted damage feature to enhance the MS-ACNN's capability in offering a better generalization in damage diagnosis. The framework's performance is examined under normal and noisy environments and with a diagnosis accuracy of 80%, which is higher than those obtained using most generic industrial grade diagnostic tools (MS–CNN–I, MSCNN-II, CNN, CNN-LSTM and CNN-BiLSTM) by at least 10%. The framework is also fitted with a Majority Weighted Voting rule to reduce false alarms and ensure optimum performance of the multi-sensor during collaborative diagnosis. Further examination shows that the inclusion of a voting rule increases the diagnostic performance's F1 index from 90% and 84% for single- and multi-sensor results to 94%.

Item Type: Article
Uncontrolled Keywords: 0906 Electrical and Electronic Engineering; 0913 Mechanical Engineering; 0915 Interdisciplinary Engineering; Energy
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering
Divisions: Engineering
Publisher: Elsevier BV
SWORD Depositor: A Symplectic
Date Deposited: 05 Sep 2022 16:10
Last Modified: 07 Sep 2023 00:50
DOI or Identification number: 10.1016/j.renene.2022.08.093
URI: https://researchonline.ljmu.ac.uk/id/eprint/17500

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