Degradation Effects on Combined Cycle Power Plant Performance: Part 1 — Gas Turbine Cycle Component Degradation Effects

Zwebek, A.; Pilidis, Pericles

doi:10.1115/2001-gt-0388

Cited by 8 publications

(3 citation statements)

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“…The GT efficiency is the most important parameter in CCGT efficiency. The primary drivers for GT performance degradation are fouling, erosion, corrosion, foreign object damage, thermal distortion and material losses in the turbine section (Zwebek & Pilidis, 2003). Typical capacity and heat rate degradation rates of 3% and 1.9% respectively, are assumed over each of the plants life (PA Consulting, 2014).…”

Section: Degradationmentioning

confidence: 99%

Techno-economic assessments of advanced Combined Cycle Gas Turbine (CCGT) technology for the new electricity market in the United Arab Emirates

Mondol

Carr²

2017

Sustainable Energy Technologies and Assessments

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In this study, a dynamic cost model was constructed to compare the Levelised Costs of Electricity (LCOE) for advanced CCGT technology in comparison to traditional CCGT technology. The key technical and economic factors that affected the competitiveness of these CCGT units were evaluated. The results showed that advanced H-class CCGT technology has the lowest LCOE for the base case scenario at 4.93 US cents/kWh versus 5.32 and 5.71 US cents/kWh for F-and Eclass technologies respectively. It is evident that the more advanced CCGT technology matches the major market drivers for the UAE energy transition, namely; competitive lifecycle costs, high thermal efficiencies which reduce fuel costs and limit CO 2 emissions and a high operational flexibility. The LCOE model outputs summarise the overall financial competitiveness of the different CCGT technologies for the UAE up to the year 2030 considering the future power generation demand profile. There are no H-class gas turbines installed in the UAE and this was one of the drivers behind this paper to show the benefits of the latest advanced CCGT technology. The study conveniently facilitates future discussions on the opportunities and challenges of the UAE"s energy transition for developers, electricity suppliers and national policy makers. .

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Section: Degradationmentioning

confidence: 99%

Techno-economic assessments of advanced Combined Cycle Gas Turbine (CCGT) technology for the new electricity market in the United Arab Emirates

Mondol

Carr²

2017

Sustainable Energy Technologies and Assessments

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“…The performance evaluation is repeated at regular intervals with the object of calculating the degradation of the different elements of the plant. Degradation is defined as a worsening of performance and can be caused, depending on the plant component, by various phenomena: from compressor fouling to turbine blade oxidation or corrosion, heat exchanger fouling, and so on [8] [9]. A detailed diagnostic analysis can perform important improvements in power plant management, such as:…”

Section: Introductionmentioning

confidence: 99%

Performance Monitoring of Gas Turbine Components: A Real Case Study Using a Micro Gas Turbine Test Rig

Cafaro

Traverso

Ferrari

et al. 2009

Volume 5: Microturbines and Small Turbomachinery; Oil and Gas Applications

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Estimating the performance of all the components of a recuperated micro gas turbine cycle plays a determinant role in improving their reliability for distributed power generation and cogeneration. The monitoring and diagnostic activity consists in continuously evaluating the productivity capacity and the efficiency of the plant, using the stream of data coming from the plant’s instrumentation. In this framework a diagnostic tool for the micro gas turbine installed at the TPG test rig (located in Savona, Italy) was developed, with the objective of monitoring the operating parameters of the turbomachine, the performance of the heat exchanger and, in general, the good operation of the plant. Even though the commercial machine is equipped with the essential probes for control (rotational speed, TOT, intake temperature and eating water temperature meters) and diagnostic purposes (vibration sensor, filter differential pressure and other thermocouples), further instruments were introduced in the test rig to measure a larger number of properties and points. As result of this, a wide number of measurements is available and can be effectively used for the development of a diagnostic model. The diagnostic model presented in this paper is written in Matlab-Simulink® environment and, in its first version, provides information about compressor and turbine efficiency and heat exchanger effectiveness. The model was developed starting from the turbomachinery maps and the heat exchanger design performance. A validation of the code was performed using the measurements coming directly from the data acquisition system. Preliminary results coming from the model are presented, showing the different performance of each component of the plant in the various operating conditions.

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“…The performance evaluation is * Corresponding author: DIMSET repeated at regular intervals with the objective of calculating the degradation of the different elements of the plant. The degradation is defined as a worsening performance and can be caused, depending on plant component, by various phenomena: from compressor fouling to turbine blade oxidation or corrosion, heat exchangers fouling, and so on [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Heat recovery steam generator performance and degradation in a 400 MW combined cycle

Cafaro

Traverso

Massardo

2009

Proceedings of the Institution of Mechanical Engineers, Part A:

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This article presents a research project carried out by the Thermochemical Power Group of the University of Genoa and is concerned with the monitoring of a three pressure level heat recovery steam generator (HRSG).The work consists of the development of an original computer code using Matlab software that calculates the performance of heat exchangers, at different power plant operating conditions. This kind of software was developed with a twofold objective: to calculate the actual gas path inside the HRSG starting from the available measurements, thus obtaining the current effectiveness of all the heat exchangers in the HRSG, and to estimate the expected performance of each heat exchanger to be compared with the actual ones.Once the actual effectiveness and the expected effectiveness of the heat exchanger are defined, non-dimensional performance parameters suitable for degradation assessment can be defined. As a result of the sensitivity analysis, each performance parameter is coupled with an accuracy factor. The developed methodology has been successfully applied to historical logged data (3 years) of an existing large size (400 MW) combined cycle, showing good capabilities in estimating the degradation of the HRSG throughout plant life.

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Degradation Effects on Combined Cycle Power Plant Performance: Part 1 — Gas Turbine Cycle Component Degradation Effects

Cited by 8 publications

References 0 publications

Techno-economic assessments of advanced Combined Cycle Gas Turbine (CCGT) technology for the new electricity market in the United Arab Emirates

Techno-economic assessments of advanced Combined Cycle Gas Turbine (CCGT) technology for the new electricity market in the United Arab Emirates

Performance Monitoring of Gas Turbine Components: A Real Case Study Using a Micro Gas Turbine Test Rig

Heat recovery steam generator performance and degradation in a 400 MW combined cycle

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