Abstract

In this paper, a wind turbine anomaly detection method based on a generalized feature extraction is proposed. Firstly, wind turbine (WT) attributes collected from the Supervisory Control And Data Acquisition (SCADA) system are clustered with k-means, and the Silhouette Coefficient (SC) is adopted to judge the effectiveness of clustering. Correlation between attributes within a class becomes larger, correlation between classes becomes smaller by clustering. Then, dimensions of attributes within classes are reduced based on t-Distributed-Stochastic Neighbor Embedding (t-SNE) so that the low-dimensional attributes can be more full and more concise in reflecting the WT attributes. Finally, the detection model is trained and the normal or abnormal state is detected by the classification result 0 or 1 respectively. Experiments consists of three cases with SCADA data demonstrate the effectiveness of the proposed method.

Highlights

  • With the increasing exhaustion of resources such as minerals and petroleum, wind energy is widely used due to its sustainability and cleanliness

  • Due to the above problems, this paper propose the following method: first, we cluster the attributes collected from Supervisory Control And Data Acquisition (SCADA), and reduce the dimensions

  • wind turbine (WT) attributes collected from the SCADA system are clustered by k-means, and the method of dimension reduction within class based on t-Distributed-Stochastic Neighbor Embedding (t-SNE) is proposed

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Summary

Introduction

With the increasing exhaustion of resources such as minerals and petroleum, wind energy is widely used due to its sustainability and cleanliness. In [4], an evaluation index of wind turbine generator operating health based on the relationships with SCADA data was presented. In [6], a wind turbine generator slip ring damage detection through temperature data analysis method was presented. The rich data of SCADA system make anomaly detection of wind turbines more flexible and reliable. In [11], based on fuzzy theory, a generalized wind turbine anomaly detection model is proposed. In [12], a SVM-based method for fault detection in wind turbines was proposed, and the operating states of the wind turbine is classified.

Architecture of the Proposed Method
Data Feature Extraction
Clarify the Maximum Number of Clusters
Determine the Number of Clusters
T-SNE Dimensionality Reduction
Architecture of Detection Model
Deep Neural Network
Description of Each Layer
Training Process of the Model
Experimental and Discussion
Data Description
Model Parameters Setting
Cases Analysis
Cases 1
Cases 2
Findings
Cases 3
Conclusions
Full Text
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