A method for defining which parts of a combined cycle gas turbine (CCGT) power plant are responsible for performance deviations is presented. When the overall performances deviate from their baseline values, application of the method allows the determination of the component(s) of the plant, responsible for this deviation. It is shown that simple differentiation approaches may lead to erroneous conclusions, because they do not reveal the nature of deviations for individual components. Contributions of individual components are then assessed by separating deviations due to permanent changes and deviations due to change of operating conditions. A generalized formulation is presented together with the way of implementing it. Test cases are given, to make clearer the ideas put forward in the proposed method.
Allocating the Causes of Performance Deterioration in Combined Cycle Gas Turbine Plants
Contributed by the Turbomachinery Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the Turbomachinery Division, October 2000; final revision, August 2001. Associate Editor: G. Sheard.
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Mathioudakis, K., Stamatis, A., and Bonataki, E. (March 26, 2002). "Allocating the Causes of Performance Deterioration in Combined Cycle Gas Turbine Plants ." ASME. J. Eng. Gas Turbines Power. April 2002; 124(2): 256–262. https://doi.org/10.1115/1.1426407
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