Performance evaluation and economic analysis of a gas turbine power plant in Nigeria

Oyedepo, Sunday Olayinka; Fagbenle, R. O.; Adefila, S.S.; Adavbiele, Stephen Airewe

doi:10.1016/j.enconman.2013.12.034

Cited by 52 publications

(35 citation statements)

References 20 publications

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“…also corroborated this statement by emphasising that gas flaring is a controversial environmental issue because it contributes significantly to greenhouse gas (GHG) emission and can be seen from an economic perspective as a waste of valuable energy resources. It is crystal clear that better alternative and more sustainable approach have to be developed to mitigate this gas flaring in Nigeria Oyedepo et al (2014). have x-rayed the historical installed capacity, generation capacity and capacity utilization in Nigeria over the period of 1980-2009 as presented in…”

mentioning

confidence: 99%

Gas flaring and its impact on electricity generation in Nigeria

Adekomaya

Jamiru

Sadiku

et al. 2016

Journal of Natural Gas Science and Engineering

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confidence: 99%

Gas flaring and its impact on electricity generation in Nigeria

Adekomaya

Jamiru

Sadiku

et al. 2016

Journal of Natural Gas Science and Engineering

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“…It was observed that between 1999 and 2005, average plant availability was about 50%, significantly short of international standards of over 95%. The sector witnessed a low in 2001 when available capacity stood at 1750 MW when only 19 of the 79 installed units were functional [18,19].…”

Section: Introductionmentioning

confidence: 99%

Assessment of performance indices of selected gas turbine power plants in Nigeria

Oyedepo

Fagbenle

Adefila

2015

Energy Science & Engineering

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In this study, performance assessment of selected gas turbine power plants in Nigeria was evaluated using performance indices. The results of the study showed that for the period under review (2006)(2007)(2008)(2009)(2010), the percentage shortfalls from the target energy in the selected power plants range from 26.33% to 86.61% as against the acceptable value of 5-10%. The capacity factor of the selected power plants varies from 16.88% to 73.67% as against the international value of 50-80%. The plant use factor varies from 45.89% to 97.03% and the utilization factor varies from 6.31% to 93.074% as against the international best practice of over 95%. From this result, it can be concluded that the generating units were underutilized. This is due to inadequate routine maintenance and equipment fault development. The analyses of reliability indicators revealed that the mean time between failures varies from 5.42 to 378.44 h, the mean time to repair varies from 18.3 to 153.88 h and the plant availability varies from 12.86% to 91.31% as against the Institute of Electrical and Electronics Engineers recommended standard of 99.9%. Evaluation of operating figures of the selected power plants revealed that starting reliability (SR) and operating reliability vary from 71.95% to 93.9% and 5.33% to 55%, respectively. The SR of the selected power plants is low in value compared with standard value of 99.9%. The statistical analysis carried out on plant availability revealed that at 95% confidence level; there is a significant difference in availability of the selected power plants. This indicates differences in their systems installation, operation and maintenance. The performance indicator developed to evaluate the performance indices for the selected stations can also be applicable to other power stations in Nigeria and elsewhere. Measures to improve the performance indices of the plants have been suggested in this paper.

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“…The audit established that there was high energy consumption at the plant which could lead to high greenhouse gas emission and operational cost. In Oyedepo et al [5], an economic based performance evaluation was presented. Their result showed that energy generated within the period have a shortfall range from 4.18% to 14.53% as against the acceptance value of 5-10%.…”

Section: Introductionmentioning

confidence: 99%

Performance and Economic Analysis of Gas Turbine Subsystems for Power Generation in the Niger Delta

Rahimi

2016

IJET

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Abstract:In this research work, performance and economic analysis of three units' gas turbine plants in the Niger Delta, Nigeria has been carried out for the period of 18 months. The aim of this study is to assess the energy, exergy and economic behavior of the plants' subsystems. The methodology adopted was the splitting of the system into control volumes to show the inflow and outflow of energy and exergy at different operating conditions. A parametric study was also conducted to evaluate the influence of key decision variables like the load on the plant's subsystem performance. The analysis was done in MATLAB 7.3 ® environment and the results reveals that between the 40%-86% loading of the plant, the energy loss was optimum due to outages and exhaust gas energy waste, with revenue worth of $14,611,642 cumulatively, while the irreversibility in the exhaust gas progressively increase as the load increases with an exergy destruction cost rate of $234.98 per hour per unit. The combustor shows maximum exergy loss at 44% load with an exergy destruction cost rate of $127.87 per hour per unit, while the power turbine highest exergy destruction cost rate occurred at 73% load. These key performance indicators provide relevant information on the technical state of the plant for decision-making.

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Performance evaluation and economic analysis of a gas turbine power plant in Nigeria

Cited by 52 publications

References 20 publications

Gas flaring and its impact on electricity generation in Nigeria

Gas flaring and its impact on electricity generation in Nigeria

Assessment of performance indices of selected gas turbine power plants in Nigeria

Performance and Economic Analysis of Gas Turbine Subsystems for Power Generation in the Niger Delta

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