Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometers
Abstract Fatigue has become a major consideration factor in modern offshore wind farms as optimized design codes, and a lack of lifetime reserve has made continuous fatigue life monitoring become an operational concern. In this contribution, we discuss a data‐driven methodology for farm‐wide tower‐t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-04-01
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| Series: | Wind Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/we.2888 |
| _version_ | 1797261424830971904 |
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| author | Francisco de NSantos Nymfa Noppe Wout Weijtjens Christof Devriendt |
| author_facet | Francisco de NSantos Nymfa Noppe Wout Weijtjens Christof Devriendt |
| author_sort | Francisco de NSantos |
| collection | DOAJ |
| description | Abstract Fatigue has become a major consideration factor in modern offshore wind farms as optimized design codes, and a lack of lifetime reserve has made continuous fatigue life monitoring become an operational concern. In this contribution, we discuss a data‐driven methodology for farm‐wide tower‐transition piece fatigue load estimation. We specifically debate the employment of this methodology in a real‐world farm‐wide setting and the implications of continuous monitoring. With reliable nacelle‐installed accelerometer data at all locations, along with the customary 10‐min supervisory control and data acquisition (SCADA) statistics and three strain gauge‐instrumented 'fleet‐leaders', we discuss the value of two distinct approaches: use of either fleet‐leader or population‐based data for training a physics‐guided neural network model with a built‐in conservative bias, with the latter taking precedence. In the context of continuous monitoring, we touch on the importance of data imputation, working under the assumption that if data are missing, then its fatigue loads should be modeled as under idling. With this knowledge at hand, we analyzed the errors of the trained model over a period of 9 months, with monthly accumulated errors always kept below ±5%. A particular focus was given to performance under high loads, where higher errors were found. The cause for this error was identified as being inherent to the use of 10‐min statistics, but mitigation strategies have been identified. Finally, the farm‐wide results are presented on fatigue load estimation, which allowed to identify outliers, whose behavior we correlated with the operational conditions. Finally, the continuous data‐driven, population‐based approach here presented can serve as a springboard for further lifetime‐based decision‐making. |
| first_indexed | 2024-04-24T23:41:00Z |
| format | Article |
| id | doaj.art-322f21667ee0411094fa402002aa52d3 |
| institution | Directory Open Access Journal |
| issn | 1095-4244 1099-1824 |
| language | English |
| last_indexed | 2024-04-24T23:41:00Z |
| publishDate | 2024-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Wind Energy |
| spelling | doaj.art-322f21667ee0411094fa402002aa52d32024-03-15T12:14:31ZengWileyWind Energy1095-42441099-18242024-04-0127432134010.1002/we.2888Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometersFrancisco de NSantos0Nymfa Noppe1Wout Weijtjens2Christof Devriendt3OWI‐Lab Vrije Universiteit Brussel Brussels BelgiumOWI‐Lab Vrije Universiteit Brussel Brussels BelgiumOWI‐Lab Vrije Universiteit Brussel Brussels BelgiumOWI‐Lab Vrije Universiteit Brussel Brussels BelgiumAbstract Fatigue has become a major consideration factor in modern offshore wind farms as optimized design codes, and a lack of lifetime reserve has made continuous fatigue life monitoring become an operational concern. In this contribution, we discuss a data‐driven methodology for farm‐wide tower‐transition piece fatigue load estimation. We specifically debate the employment of this methodology in a real‐world farm‐wide setting and the implications of continuous monitoring. With reliable nacelle‐installed accelerometer data at all locations, along with the customary 10‐min supervisory control and data acquisition (SCADA) statistics and three strain gauge‐instrumented 'fleet‐leaders', we discuss the value of two distinct approaches: use of either fleet‐leader or population‐based data for training a physics‐guided neural network model with a built‐in conservative bias, with the latter taking precedence. In the context of continuous monitoring, we touch on the importance of data imputation, working under the assumption that if data are missing, then its fatigue loads should be modeled as under idling. With this knowledge at hand, we analyzed the errors of the trained model over a period of 9 months, with monthly accumulated errors always kept below ±5%. A particular focus was given to performance under high loads, where higher errors were found. The cause for this error was identified as being inherent to the use of 10‐min statistics, but mitigation strategies have been identified. Finally, the farm‐wide results are presented on fatigue load estimation, which allowed to identify outliers, whose behavior we correlated with the operational conditions. Finally, the continuous data‐driven, population‐based approach here presented can serve as a springboard for further lifetime‐based decision‐making.https://doi.org/10.1002/we.2888farm‐wide fatigue estimationoffshore wind turbine fatiguepopulation‐based SHM |
| spellingShingle | Francisco de NSantos Nymfa Noppe Wout Weijtjens Christof Devriendt Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometers Wind Energy farm‐wide fatigue estimation offshore wind turbine fatigue population‐based SHM |
| title | Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometers |
| title_full | Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometers |
| title_fullStr | Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometers |
| title_full_unstemmed | Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometers |
| title_short | Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometers |
| title_sort | farm wide interface fatigue loads estimation a data driven approach based on accelerometers |
| topic | farm‐wide fatigue estimation offshore wind turbine fatigue population‐based SHM |
| url | https://doi.org/10.1002/we.2888 |
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