Estimation of Combustor and Compressor Faults in Industrial Gas Turbines by Using Multiple Model Approach

Articles in Press

Document Type : Original Article

Authors

1 Sahand university of technology-Tabriz-Iran

2 Faculty of Electrical Engineering, Sahand University of Technology, Tabriz, IRAN

10.22034/ijche.2023.392185.1301

Abstract

Degradation due to the long time operation at the gas turbine may cause a fall in the combustor and compressor efficiency and characteristics, which makes a decrease in total efficiency and, an increase in fuel consumption with growth in the production of the pollutants. These phenomena are not distinguishable by conventional diagnostic systems. Although instrumental protection of gas turbine may be profited by the control system but, it depends to components damage result revealation. So, in this research, a special method using the Multiple Model approach, based on multi-operating points is developed to continuously estimation these kinds of faults, to sustain the major defects in an industrial gas turbine. The object is done by defining the main components health indicator variables. First nonlinear thermodynamic static and dynamic models are constructed and linearized. By a combination of those in a dynamic convex set the alternate adaptive model is developed that, could cover the dynamic of the gas turbine. By decoupling the adaptive filter residuals, estimation of the faults and operating point determination are executed. Finally, the efficiency of the proposed approach is demonstrated in a simulation environment.

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Iranian Chemical Engineering Journal

Articles in Press, Accepted Manuscript
Available Online from 04 July 2023

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