NDLI: Gas Turbine Diagnosis Using a Fault Isolation Enhanced GPA

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Li, Y. G.
Copyright Year	2004
Abstract	Gas Path Analysis (GPA) and its different derivatives have been developed for more than thirty years and used widely and successfully by many gas turbine manufacturers and operators. In gas turbine gas path component diagnosis, it has been recognized for a long time that GPA would be more successful if degraded components could be located. Unfortunately, only the deviation of measurable parameters is monitored in operation and information about the degraded components is normally not available. In this research, a two-step diagnostic approach is introduced, where a pattern matching method is used first and further developed to isolate degraded components; then Gas Path Analysis is applied to assess the quantity of degradation. A gas turbine performance simulation program, Cranfield University TURBOMATCH, has been modified to simulate the diagnostic process. A model gas turbine engine similar to Rolls-Royce aero AVON is used to test the effectiveness of the approach. It is found that the developed fault isolation method can isolate degraded components accurately and enhance the effectiveness of the quantitative assessment of the degradation with Gas Path Analysis (GPA) in gas turbine diagnostics.
Sponsorship	International Gas Turbine Institute
Starting Page	361
Ending Page	369
Page Count	9
File Format	PDF
ISBN	0791841723
DOI	10.1115/GT2004-53571
e-ISBN	0791837394
Volume Number	Volume 7: Turbo Expo 2004
Conference Proceedings	ASME Turbo Expo 2004: Power for Land, Sea, and Air
Language	English
Publisher Date	2004-06-14
Publisher Place	Vienna, Austria
Access Restriction	Subscribed
Subject Keyword	Fault isolation Gpa Gas turbine Diagnosis Pattern matching Gas turbines
Content Type	Text
Resource Type	Article

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