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Diagnosis of Plantwide Oscillations: A Harmonics Analysis Approach

Author

Listed:
  • Nahid Sanzida

    (Department of Chemical Engineering, Bangladesh University of Engineering & Technology, Dhaka, Bangladesh)

  • M. A. A. Shoukat Choudhury

    (Department of Chemical Engineering, Bangladesh University of Engineering & Technology, Dhaka, Bangladesh)

Abstract

Highly complex and integrated modern chemical process plants are susceptible of disturbances that propagate throughout the plant from one unit to other interconnected units and create plant wide oscillations. These persisting oscillations are originated due to various faults such as sensor faults, valve faults, process faults and controller tuning faults. These types of nonlinear faults can be characterized by a fundamental frequency and its harmonics. This paper demonstrates a novel data driven off-line time domain method to identify the root-cause of plantwide or unit-wide disturbances to troubleshoot plantwide disturbances using harmonics analysis. The successful application of the proposed method has been demonstrated through simulated data.

Suggested Citation

  • Nahid Sanzida & M. A. A. Shoukat Choudhury, 2015. "Diagnosis of Plantwide Oscillations: A Harmonics Analysis Approach," Journal of Advances in Technology and Engineering Research, A/Professor Akbar A. Khatibi, vol. 1(1), pages 30-34.
    • Handle: RePEc:apb:jaterr:2015:p:30-34
    DOI: 10.20474/jater-1.1.4
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