Investigating the Operational Limits of a Horizontal Axis Wind Turbine Gearbox Through Unsupervised Comparison Between Units of the Same Equipment from Three Nearby Power Plants
Considering the operating limits proposed by ISO 10816-21 – Evaluation of Machine Vibration by Measurements on Non-Rotating Parts – for horizontal-axis wind turbine gearboxes, we analyzed the behavior of nearly one hundred gearboxes from three nearby onshore wind farms (~10 sq km) in northeastern...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Stefan cel Mare University of Suceava
2025-06-01
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| Series: | Advances in Electrical and Computer Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.4316/AECE.2025.02003 |
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| Summary: | Considering the operating limits proposed by ISO 10816-21 – Evaluation of Machine
Vibration by Measurements on Non-Rotating Parts – for horizontal-axis wind turbine
gearboxes, we analyzed the behavior of nearly one hundred gearboxes from three
nearby onshore wind farms (~10 sq km) in northeastern Brazil. Each wind turbine
is equipped with an identical mechanical vibration monitoring system, comprising
ten sensors and nine features per sensor. First, we assessed whether the equipment
operated within the ISO-defined limits. Next, we confirmed the trends detected by
the ten gearbox sensors exhibited a strong correlation with one another. However,
trends among similar pieces of equipment operating under the same conditions were
not strongly correlated. An unsupervised correlation analysis using the Fast Fourier
Transform (FFT) was conducted for all wind turbines, considering the zone boundary
values proposed by ISO. The unsupervised correlation analysis enhances knowledge
for more targeted monitoring, achieving an accuracy score exceeding 70%. This
approach contributes to the development of a more effective predictive maintenance
program. |
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| ISSN: | 1582-7445 1844-7600 |