Robust Fault Detection of Wind Energy Conversion Systems Based on Dynamic Neural Networks

Occurrence of faults in wind energy conversion systems (WECSs) is inevitable. In order to detect the occurred faults at the appropriate time, avoid heavy economic losses, ensure safe system operation, prevent damage to adjacent relevant systems, and facilitate timely repair of failed components; a f...

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Bibliographic Details
Published in:Computational Intelligence and Neuroscience 2014-01, Vol.2014 (2014), p.393-405
Main Authors: Talebi, Nasser, Sadrnia, Mohammad Ali, Darabi, Ahmad
Format: Article
Language:English
Subjects:
Algorithms
Behavior
Braking systems
Catalytic cracking
Computer Simulation
Design
Electric power systems
Energy Transfer
Energy transformation
Energy-Generating Resources
Humans
Maintenance and repair
Methods
Monitoring systems
Neural networks
Neural Networks (Computer)
Nonlinear Dynamics
Sensors
Signal Processing, Computer-Assisted
Time series
Turbines
Wind
Wind power
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Summary:Occurrence of faults in wind energy conversion systems (WECSs) is inevitable. In order to detect the occurred faults at the appropriate time, avoid heavy economic losses, ensure safe system operation, prevent damage to adjacent relevant systems, and facilitate timely repair of failed components; a fault detection system (FDS) is required. Recurrent neural networks (RNNs) have gained a noticeable position in FDSs and they have been widely used for modeling of complex dynamical systems. One method for designing an FDS is to prepare a dynamic neural model emulating the normal system behavior. By comparing the outputs of the real system and neural model, incidence of the faults can be identified. In this paper, by utilizing a comprehensive dynamic model which contains both mechanical and electrical components of the WECS, an FDS is suggested using dynamic RNNs. The presented FDS detects faults of the generator's angular velocity sensor, pitch angle sensors, and pitch actuators. Robustness of the FDS is achieved by employing an adaptive threshold. Simulation results show that the proposed scheme is capable to detect the faults shortly and it has very low false and missed alarms rate.
ISSN:1687-5265
1687-5273
DOI:10.1155/2014/580972