Framework for Bidirectional Knowledge-Based Maintenance of Wind Turbines

Abstract

Artificial intelligence (AI) techniques, such as machine learning (ML), are being developed and applied for the monitoring, tracking, and fault diagnosis of wind turbines. Current prediction systems are largely limited by their inherent disadvantages for wind turbines. For example, frequency or vibration analysis simulations at a part scale require a great deal of computational power and take considerable time, an aspect that can be essential and expensive in the case of a breakdown, especially if it is offshore. An integrated digital framework for wind turbine maintenance is proposed in this study. With this framework, predictions can be made both forward and backward, breaking down barriers between process variables and key attributes. Prediction accuracy in both directions is enhanced by process knowledge. An analysis of the complicated relationships between process parameters and process attributes is demonstrated in a case study based on a wind turbine prototype. Due to the harsh environments in which wind turbines operate, the proposed method should be very useful for supervising and diagnosing faults.

Classification of Systems and Maintenance Models

“…Studies [65][66][67][68][69][70] introduced prescriptive maintenance techniques that may not only predict the condition of a machine in the future but also suggest proactively timed decisions for certain maintenance activities such as inspection, repair, and replacement. Studies [71][72][73][74][75][76] considered the use of knowledge-based approaches in predictive, condition-based, prescriptive, and preventive maintenance.…”

“…Events Γ PR t j and Γ CR t j are mutually exclusive because they are based on incompatible events (25), (27), and (29). Therefore, by applying the addition theorem of probability to (74), we obtain (71).…”

Comprehensive Analysis and Evaluation of the Operation and Maintenance of Offshore Wind Power Systems: A Survey

“…In Refs. [120][121][122][123][124][125], some of the latest research results and development trends were mainly introduced. These involve wind turbine control strategy, optimization control, digital framework, reliability and fault cost modeling, digital twin application, load distribution, and mooring line management.…”