Identifying Faults in the Variable Geometry System of a Gas Turbine CompressorSource: Journal of Turbomachinery:;2001:;volume( 123 ):;issue: 001::page 33Author:A. Tsalavoutas
,
Research Assistant
,
M. Smith
,
Principal Engineer
,
K. Mathioudakis
,
A. Stamatis
,
Research Associate
DOI: 10.1115/1.1330267Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The influence of faults in the variable geometry (variable stator vanes) system of a multistage axial compressor on the performance of an industrial gas turbine is investigated. An experimental investigation has been conducted, by implanting such faults into an operating gas turbine. The faults examined are individual stator vane mistunings of different magnitudes and located at different stages. Fault identification is based on the aerothermodynamic measurement data and is achieved by employing two different techniques, namely adaptive performance modeling and monitoring the circumferential distribution of the turbine exit temperature. It is observed that the deviations of the health indices produced by an adaptive performance model form patterns that can be used to identify the faults. The patterns characterize both the kind and the magnitude of the fault. On the other hand, the turbine exit temperature profile is also influenced and its change can be used as additional information, to increase the confidence level of the diagnosis (contrary to customary practice, which expects temperatures profiles to reflect only burner or turbine malfunctions).
keyword(s): Engines , Compressors , Gas turbines , Temperature , Turbines , Geometry , Temperature profiles , Measurement AND Modeling ,
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contributor author | A. Tsalavoutas | |
contributor author | Research Assistant | |
contributor author | M. Smith | |
contributor author | Principal Engineer | |
contributor author | K. Mathioudakis | |
contributor author | A. Stamatis | |
contributor author | Research Associate | |
date accessioned | 2017-05-09T00:06:19Z | |
date available | 2017-05-09T00:06:19Z | |
date copyright | January, 2001 | |
date issued | 2001 | |
identifier issn | 0889-504X | |
identifier other | JOTUEI-28686#33_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/126076 | |
description abstract | The influence of faults in the variable geometry (variable stator vanes) system of a multistage axial compressor on the performance of an industrial gas turbine is investigated. An experimental investigation has been conducted, by implanting such faults into an operating gas turbine. The faults examined are individual stator vane mistunings of different magnitudes and located at different stages. Fault identification is based on the aerothermodynamic measurement data and is achieved by employing two different techniques, namely adaptive performance modeling and monitoring the circumferential distribution of the turbine exit temperature. It is observed that the deviations of the health indices produced by an adaptive performance model form patterns that can be used to identify the faults. The patterns characterize both the kind and the magnitude of the fault. On the other hand, the turbine exit temperature profile is also influenced and its change can be used as additional information, to increase the confidence level of the diagnosis (contrary to customary practice, which expects temperatures profiles to reflect only burner or turbine malfunctions). | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Identifying Faults in the Variable Geometry System of a Gas Turbine Compressor | |
type | Journal Paper | |
journal volume | 123 | |
journal issue | 1 | |
journal title | Journal of Turbomachinery | |
identifier doi | 10.1115/1.1330267 | |
journal fristpage | 33 | |
journal lastpage | 39 | |
identifier eissn | 1528-8900 | |
keywords | Engines | |
keywords | Compressors | |
keywords | Gas turbines | |
keywords | Temperature | |
keywords | Turbines | |
keywords | Geometry | |
keywords | Temperature profiles | |
keywords | Measurement AND Modeling | |
tree | Journal of Turbomachinery:;2001:;volume( 123 ):;issue: 001 | |
contenttype | Fulltext |