Detecting Coal Pulverizing System Anomaly Using a Gated Recurrent Unit and Clustering

Sensors
Zian ChenZhengguo Xu

Abstract

The coal pulverizing system is an important auxiliary system in thermal power generation systems. The working condition of a coal pulverizing system may directly affect the safety and economy of power generation. Prognostics and health management is an effective approach to ensure the reliability of coal pulverizing systems. As the coal pulverizing system is a typical dynamic and nonlinear high-dimensional system, it is difficult to construct accurate mathematical models used for anomaly detection. In this paper, a novel data-driven integrated framework for anomaly detection of the coal pulverizing system is proposed. A neural network model based on gated recurrent unit (GRU) networks, a type of recurrent neural network (RNN), is constructed to describe the temporal characteristics of high-dimensional data and predict the system condition value. Then, aiming at the prediction error, a novel unsupervised clustering algorithm for anomaly detection is proposed. The proposed framework is validated by a real case study from an industrial coal pulverizing system. The results show that the proposed framework can detect the anomaly successfully.

References

Oct 23, 1997·Neural Computation·S Hochreiter, J Schmidhuber
Oct 27, 2004·IEEE Transactions on Systems, Man, and Cybernetics. Part B, Cybernetics : a Publication of the IEEE Systems, Man, and Cybernetics Society·Sylviane GentilChristophe Combastel
Aug 23, 2005·Neural Networks : the Official Journal of the International Neural Network Society·Alex Graves, Jürgen Schmidhuber
Jun 28, 2014·Science·Alex Rodriguez, Alessandro Laio

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Software Mentioned

Python
XGBoost
Windows
pytorch

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