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Pattern mining and fault detection via \(\textit{COP}_{\textit{therm}}\)-based profiling with correlation analysis of circuit variables in chiller systems

  • Special Issue Paper
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Computer Science - Research and Development

Abstract

In this paper, we propose methods of handling, analyzing, and profiling monitoring data of energy systems using their thermal coefficient of performance seen in uneven segmentations in their time series databases. Aside from assessing the performance of chillers using this parameter, we dealt with pinpointing different trends that this parameter undergoes through while the systems operate. From these results, we identified and cross-validated with domain experts outlier behavior which were ultimately identified as faulty operation of the chiller. Finally, we establish correlations of the parameter with the other independent variables across the different circuits of the machine with or without the observed faulty behavior.

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Acknowledgments

The authors would like to thank Dan Pelleg and the Auton Lab of Carnegie Mellon University’s School of Computer Science for the implementation of X-Means used in this research.

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Authors and Affiliations

  1. Energy Department, AIT Austrian Institute of Technology, Vienna, Austria

    Jasmine Malinao, Florian Judex, Tim Selke & Gerhard Zucker

  2. University of the Philippines, Diliman, Quezon City, Philippines

    Jaime Caro

  3. Vienna University of Technology, Vienna, Austria

    Walter Kropatsch

Authors
  1. Jasmine Malinao
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  2. Florian Judex
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  3. Tim Selke
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  4. Gerhard Zucker
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  5. Jaime Caro
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  6. Walter Kropatsch
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Corresponding author

Correspondence to Jasmine Malinao.

Appendix

Appendix

Tables 3 and 4.

Table 3 Correlation values \(r\) for \(\textit{COP}_{\textit{therm}}\) and \(\textit{TMTsu}\) values computed per cluster
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Table 4 Correlation values \(r\) for \(\textit{COP}_{\textit{therm}}\) and \(\textit{TLTre}\) values computed per cluster
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Malinao, J., Judex, F., Selke, T. et al. Pattern mining and fault detection via \(\textit{COP}_{\textit{therm}}\)-based profiling with correlation analysis of circuit variables in chiller systems. Comput Sci Res Dev 31, 79–87 (2016). https://doi.org/10.1007/s00450-014-0277-5

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  • DOI: https://doi.org/10.1007/s00450-014-0277-5

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