Diagnozing and Prognozing Gas Turbine Rotor Shaft Faults Using “The MICE”

Ogbonnaya, Ezenwa A.

doi:10.1115/gt2009-59450

Cited by 4 publications

(5 citation statements)

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“…"THAPCOM" stands for THermodynamics And Performance COndition Monitoring. As stated in Uhumnwangho, et al, (2003), Brun and Kurz (2007) and Ogbonnaya (2009), the deviation of GT thermodynamics and performance parametric values from their reference values stated in the man u f a c t u r e r ' s m a n u a l i s a n i n d i c a t i o n o f impending failure. This is because condition monitoring is the process of ascertaining the state of a parameter in an equipment such that any adverse significant deviation/change is an indication of impending failure.…”

Section: A = Actual Value a L = Active Load (Mw)mentioning

confidence: 88%

“…THAPCOM monitors, compares 15 thermodynamics and performance parameters and uses 4 of the parameters to obtain the coefficients. THAPCOM is similar to MCM, ANNs used in Ogbonnaya (2004a and2009) in their mode of operation but their difference is that MCM measures only current and voltage while THAPCOM measures thermodynamics and performance parameters. ANNs was used to diagnose and prognose GT rotor shaft faults.…”

Section: The Software "Thapcom"mentioning

confidence: 99%

“…Some areas where GTs are used include electric power, petrochemical, mining, marine, air craft, onshore and offshore oil and gas industries. (Ogbonnaya (2004a), Ogbonnaya (2004b), Pussey (2007), Brun and Kurz (2007), Rieger, et al, (1990), Ogbonnaya (2009), Ogbonnaya andTheophilus-Johnson (2010), Loboda and Yepifanov (2010), Aretakis, et al, (2010)). This chapter is therefore timely for these maritime organisations to adopt the proactive measures being proferred to prevent their equipment from catastrophic downtime.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adaptive Gas Path Modeling in Gas Turbine Health Monitoring

Ogbonnaya¹,

Johnson²,

Ugwu³

et al. 2012

Thermal Power Plants

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Section: A = Actual Value a L = Active Load (Mw)mentioning

confidence: 88%

Section: The Software "Thapcom"mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adaptive Gas Path Modeling in Gas Turbine Health Monitoring

Ogbonnaya¹,

Johnson²,

Ugwu³

et al. 2012

Thermal Power Plants

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“…Performance analysis can be applied to both rotating and stationary parts of the GT. It is one condition monitoring technique which allows the optimum time for restorative maintenance to be calculated, where the deterioration may result in increased fuel consumption or in reduced output or both [15][16][17][18][19][20][21]. The types of compressor cleaning methods with their merits and demerits are detailed as follows:…”

Section: Introductionmentioning

confidence: 99%

Gas Turbine Performance Optimization Using Compressor Online Water Washing Technique

Ogbonnaya¹

2011

ENG

Self Cite

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The ability to predict the behaviour of a gas turbine engine and optimize its performance is critical in eco-nomic, thermal and condition monitoring studies. Having identified fouling as one of the major sources of compressor and therefore gas turbine deterioration, a computer-based engine model was developed to optimize the performance of gas turbines. The paper thus presents an analysis of compressor hand cleaning, on and offline compressor washing to actualize the technique using a computer program in Visual Basic programming language with data collected over a period of fifteen weeks for 2 gas turbine plants GT1 and GT2. The results of the data collected, when collated, shows that after washing, the overall operational efficiency changed from 39.2% to 46.25%. To optimize the performance of gas turbine engines, it is therefore recommended that operators should perform a combination of compressor hand cleaning, offline and online washing simultaneously

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“…Furthermore, the function of a GT is the result of the fine-tuned co-operation of the many different components of the plant. In Ogbonnaya (2009), the author discuss on vibration related faults. Also, in Ogbonnaya et al (2010), corrosion related faults were examined.…”

Section: Introductionmentioning

confidence: 99%

A Model-Based Mixed Data Approach for Optimizing the Performance of an Offshore Gas Turbine Compressor

Ogbonnaya¹,

Ugwu²,

Diema³

2013

JVWP

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Gas turbines play prominent role in aviation, power generation, marine, mining, petrochemicals, onshore and offshore oil and gas industries. Environmental factors result to degradation mechanics of the overall performance of the engine. Industrialist therefore face unplanned equipment and manufacturing downtime which is undesirable because it leads to economic losses and costly repairs. While condition monitoring is used to obtain early warning of impending equipment failure, optimization techniques such as water washing (online and offline) are used to bring the engine/equipment back to lime-light. In this work, several schedule visits were made to a gas turbine plant on industrial duty for electricity generation in an offshore thermal station at Ibeno, near Eket, Akwa Ibom State in Nigeria. Continuous monitoring of the aerothermodynamics and vibration data were taken for a period of twelve months on hourly basis to examine the state of health of the engine due to adverse offshore environmental factors. The diagnostic approach of vibration analysis, trend and performance monitoring were used with a model-based mixed data approach for optimizing the performance of the offshore gas turbine plant.A software code-named VANCANAL written in C ++ programming language was used to proactively monitor the gas turbine plant. The software displayed the operational (actual) values of all the parameters of the engine against their designed (reference) values. Once a set limit is exceeded, the software is capable of giving an alarm, signifying the need for maintenance.

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Diagnozing and Prognozing Gas Turbine Rotor Shaft Faults Using “The MICE”

Cited by 4 publications

References 0 publications

Adaptive Gas Path Modeling in Gas Turbine Health Monitoring

Adaptive Gas Path Modeling in Gas Turbine Health Monitoring

Gas Turbine Performance Optimization Using Compressor Online Water Washing Technique

A Model-Based Mixed Data Approach for Optimizing the Performance of an Offshore Gas Turbine Compressor

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