Life Analysis of Industrial Gas Turbines Used As a Back-Up to Renewable Energy Sources

Isaiah, Thank-God; Dabbashi, Siddig; Bosak, Dawid; Sampath, Suresh; Lorenzo, Giuseppina Di; Pilidis, Pericles

doi:10.1016/j.procir.2015.07.053

Cited by 12 publications

(6 citation statements)

References 2 publications

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“…A Weibull analysis was adopted for the chain of surviving elements using a comparative simple power-law stress function [74]. Vardar and Finnie [75] explained that by using the Weibull distribution, the failure possibility (P f ) of material can be modelled using Equations (10) and 11:…”

Section: Brittle Spe Mechanismmentioning

confidence: 99%

“…In most cases, the GTE components gets exposed to harsh operating environments, which leads to degradation in its overall performance over time [9]. Such degradation in the components can result from various factors such as (1) erosion due to ingestion of particles, (2) fouling (3) hot corrosion/oxidation, (4) corrosion, and (5) foreign object damages (FOD) [10]. A comprehensive review of the research into turbomachinery deterioration was previously presented by Hamed et al [11], where they concluded that the deterioration factors in turbomachinery components accompany performance loss of the system.…”

Section: Introductionmentioning

confidence: 99%

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Solid Particle Erosion Behaviour and Protective Coatings for Gas Turbine Compressor Blades—A Review

et al. 2020

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Gas turbines (GTEs) are often utilised in harsh environments where the GT components, including compressor vanes and rotor blades, are subject to erosion damage by sand and dust particles. For instance, in a desert environment, the rate of damage made by solid particles erosion (SPE) becomes severe, and therefore results in degradation to the GTE parts, lowering the cycle efficiency, reducing the device lifetime, and increasing the overall cost of the operation. As such, understanding the erosion mechanism caused by solid particles and the effects associated with it is crucial for selecting the appropriate countermeasures and maintaining the system performance. This review paper provides a survey of the available studies on SPE effects on GTEs and surface protective coatings. Firstly, the ductile and brittle SPE mechanism is presented, as well as the ductile-brittle transition region. Then, an in-depth focus on the parameters associated with the SPE, such as particles properties and impingement conditions, is introduced. Furthermore, the existing theoretical models are shown and discussed. Afterwards, erosion resistant coating materials for surface protection and their selection criteria are covered in the review. Finally, the gap in knowledge and future research direction in the field of SPE on GTEs are provided.

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Section: Brittle Spe Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Solid Particle Erosion Behaviour and Protective Coatings for Gas Turbine Compressor Blades—A Review

et al. 2020

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“…Since the first stages of the turbine blades encounter extreme hot conditions and are critical components in maintenance schedules, the gas path for the first stages of the turbine was sized appropriately by calculating the blade height and distance from mid-shaft to mid-blade. The blade temperature and time-to-failure were then estimated using the Larson-Miller Parameter (LMP) method [44][45][46]. These calculations involve an initial estimation of the centrifugal force acting on the blade at the mid-root section, a function of the design point rotational speed of the turbine.…”

Section: Cost Estimationmentioning

confidence: 99%

Prospects of deployment of Jatropha biodiesel-fired plants in Nigeria’s power sector

Somorin

2017

Energy

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This version is available at https://strathprints.strath.ac.uk/65069/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Accepted ManuscriptProspects This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Energy, Vol. 135, 15 September 2017, pp. 726-739 DOI:10.1016/j.energy.2017 Published 3 with natural gas-and diesel-fired plants. Jatropha biodiesel can be substituted for natural gas in industrial gas turbines at 4 a slight loss in power output of ~2% and plant efficiency of ~1%. The exclusive use of the fuel in heavy duty industrial 5 gas turbines is not economically viable at existing electricity generation prices in Nigeria, except fuels are restricted to 6 combined cycle engines and considered as biomass power plants. The Levelized Cost of Electricity (LCOE) of the 7 Jatropha biodiesel-fired plants varied from $0.203-0.252/kWh, values that are below the cost of self-generated electricity 8 (SGE) in Nigeria -$0.45-0.70/kWh. To integrate Jatropha biodiesel into existing power plants, a minimum production-9 based incentive (PBI) of $0.052-0.082/kWh can be provided for up to nine years or maximum partial fuel substitution 10 (PFS) of 33-40% can be mandated, depending on the mode of operation. A guaranteed fuel price of $0.18-5/gallon can 11 be ensured, depending on electricity contract price. A carbon tax up to $100/tCO 2 can also be imposed on natural gas-12 fired plants, but this does not ensure economic viability. The high cost of SGE in Nigeria uncovers an opportunity for 13 embedded power generation. ACCEPTED MANUSCRIPT14 ...

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“…A backup power system can solve this problem by compensating for the insufficient power supply. Studies have suggested gas turbines (GTs) and nuclear power [4,5] as backup power-generation systems as well as energy storage systems (ESSs) and fuel cells [6,7].…”

Section: Introduction 1background and Motivationmentioning

confidence: 99%

Advanced Control to Improve the Ramp-Rate of a Gas Turbine: Optimization of Control Schedule

2021

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As the proportion of power generation using renewable energy increases, it is important to improve the operational flexibility of gas turbines (GTs) for the stability of power grids. Increasing the ramp-rate of GTs is a general solution. However, a higher ramp-rate increases the turbine inlet temperature (TIT), its rate of change, and the fluctuation of the frequency of produced electricity, which are negative side effects. This study proposes a method to optimize the set-point schedule for a PID controller to improve the ramp-rate while decreasing the negative impacts. The set-point schedule was optimized for a 170-MW class GT using a genetic algorithm to minimize the difference between the value of the process variable and the set-point value of the conventional control. The advanced control reduced the fluctuation of the rotation speed by 20% at the reference ramp-rates (12 MW/min and 15 MW/min). The maximum TIT decreased by 6.3 °C, and its maximum rate of change decreased from 0.7 °C/s to 0.4 °C/s. The advantage of the advanced control becomes more marked as the ramp-rate increases. Even at a much higher ramp-rate (50 MW/min), the advanced control decreased the rotation speed fluctuation by 40% in comparison to the conventional control at the reference ramp-rate.

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Life Analysis of Industrial Gas Turbines Used As a Back-Up to Renewable Energy Sources

Cited by 12 publications

References 2 publications

Solid Particle Erosion Behaviour and Protective Coatings for Gas Turbine Compressor Blades—A Review

Solid Particle Erosion Behaviour and Protective Coatings for Gas Turbine Compressor Blades—A Review

Prospects of deployment of Jatropha biodiesel-fired plants in Nigeria’s power sector

Advanced Control to Improve the Ramp-Rate of a Gas Turbine: Optimization of Control Schedule

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