Intelligent engine condition monitoring and early fault detection is becoming a necessity for modern gas turbines to achieve availability and reliability requirements. Degradation or failure of critical control components negatively affects reliability and safety as well as the ability to perform condition monitoring of the engine. Model-based approaches for analytics and condition monitoring show great promise with advances in remote connectivity and available computational power. Development of diagnostics for analytics requires focus on the target machine as well as the integrity of measurement and actuation systems to correctly identify and classify degradation indicators that discriminate between actuation and measurement faults from deterioration in machine performance. In this paper, a method is proposed to use data obtained in closed-loop operation to identify system models that separate the dynamic responses and non-linear characteristics for use in analytics. This is demonstrated on high-fidelity simulation data from a Taurus™ 60 gas turbine generator. The system is modeled with a feedback connection of a known controller in series with a block Hammerstein system.
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ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
June 16–20, 2014
Düsseldorf, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4575-2
PROCEEDINGS PAPER
Closed Loop Nonlinear System Identification Applied to Gas Turbine Analytics
Chad M. Holcomb,
Chad M. Holcomb
Solar Turbines Incorporated, San Diego, CA
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Raymond A. de Callafon,
Raymond A. de Callafon
University of California at San Diego, La Jolla, CA
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Robert E. Bitmead
Robert E. Bitmead
University of California at San Diego, La Jolla, CA
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Chad M. Holcomb
Solar Turbines Incorporated, San Diego, CA
Raymond A. de Callafon
University of California at San Diego, La Jolla, CA
Robert E. Bitmead
University of California at San Diego, La Jolla, CA
Paper No:
GT2014-26059, V006T06A013; 10 pages
Published Online:
September 18, 2014
Citation
Holcomb, CM, de Callafon, RA, & Bitmead, RE. "Closed Loop Nonlinear System Identification Applied to Gas Turbine Analytics." Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy. Düsseldorf, Germany. June 16–20, 2014. V006T06A013. ASME. https://doi.org/10.1115/GT2014-26059
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