Optimization of the operating conditions of gas-turbine power stations considering the effect of equipment deterioration

Aminov, R. Z.; Kozhevnikov, A. I.

doi:10.1134/s0040601517100019

Cited by 11 publications

(2 citation statements)

References 12 publications

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“…In order to account for a systemic impact of the proposed solutions, we estimated the cost advantages from replacing the gas turbines with intermediate‐load‐range capacity by an equivalent power in the power supply system. For this purpose, we used the data relating the total capital investment costs and the fuel consumption rate for the gas turbine unit with an equivalent power capacity . To estimate the technical and economic efficiency of the feedwater hydrogen heating at the designed NPP, we considered an increase in the gas turbine power capacity in relation to the operating NPP.…”

Section: Performace Appraisal Results and Discussionmentioning

confidence: 99%

Increasing capacity of a nuclear power plant unit using the hydrogen‐fueled feedwater heating system

Aminov

Egorov

2020

Int J Energy Res

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The article considers a novel approach to a challenging issue of modern power systems related with the future of nuclear power energy as having clear environmental advantages. To solve the problem, a number of alternative ways of using hydrogen fuel as a source of clean energy were proposed, which are aimed to increase the capacity and maneuverability of operating and designed two-circuit nuclear power plants (NPPs) with installed water coolants. In particular, it was suggested to use hydrogen energy to improve the performance of steam generators and capacity of NPP units by heating the feedwater. The revealed economic benefits of the given approach include the effect from replacing environmentally harmful stations based on gas turbine units. A research was made into the impact of pressure in the hydrogen-oxygen combustion chamber on the effectiveness of the proposed solutions. The necessary design parameters to the hydrogen heating system, the gross and net power ratings of the power unit, and the net present value were determined. It is shown that lowering the pressure in the hydrogen-oxygen combustion chamber leads to the increase in the net present value by 24 to 71 million dollars and by 43 to 90 million dollars for the operating and designed NPPs, respectively. Meanwhile, using the proposed approach to the designed NPPs can ensure a higher capacity for the power units, which equals 179 and 163 MW at atmospheric and elevated pressures, respectively. The efficiency of off-peak energy may equal 26.25 to 27.21 and 26.53% to 27.55% for the operating and designed NPPs, respectively. It should be noted that the proposed schematics prove to be economically competitive across the marginal cost of off-peak energy. The accrued net present value equals 106 to 404 million dollars and 170 to 468 million dollars at the elevated pressure, and 130 to 475 million dollars and 213 to 558 million dollars at the atmospheric pressure for the operating and designed NPPs, respectively. K E Y W O R D Sclosed-loop hydrogen cycle, hydrogen energy, nuclear energy, technical and economic efficiency,

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Section: Performace Appraisal Results and Discussionmentioning

confidence: 99%

Increasing capacity of a nuclear power plant unit using the hydrogen‐fueled feedwater heating system

Aminov

Egorov

2020

Int J Energy Res

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“…Load demand variations have been shown to greatly affect electricity production, fuel consumption, and plant incomes [9][10][11][12][13]. In addition, when gas turbines operate under varying duty conditions, the lifetimes of primary thermos-stressed components are considerably reduced and, consequently, repair costs increase [14]. Based on these facts, the assessment of gas-fired microgrid performance has become paramount.…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment and Economic Analysis of a Gas-Fueled Islanded Microgrid—A Malaysian Case Study

2019

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In this study, the performance of an islanded gas turbine power generation system in Malaysia was investigated. Considering the low fuel efficiency of the plant during peak and part-load operations, an economic analysis was also carried out, over the period of one year (2017). The case study was conducted on the isolated electrical network of the Universiti Teknologi PETRONAS (UTP), which consists of two gas turbine units with a total capacity of 8.4 MW. Simple performance indicators were developed to assess the performance, which can also be applied to other power stations in Malaysia and elsewhere. Meanwhile, the economy of variable load operations was analyzed using the statistical data of generation, fuel consumption, and loads. The study reveals that the capacity factor of the microgrid in the period was between 52.77–63.32%, as compared to the industrial best practice of 80%. The average plant use factor for the period under review was 75.04%, with a minimum of 70.93% and a maximum of 78.61%. The load factor of the microgrid ranged from 56.68–65.47%, as compared to the international best practice of 80%, while the utilization factor was between 44.22–67.655%. This study further reveals that high fuel consumption rates, due to the peak and part-load operations, resulted in a revenue loss of approximately 17,379.793 USD per year. Based on the present performance of the microgrid, suggestions are made for the improvement of the overall performance and profitability of the system. This work can be valuable for microgrid utility research to identify the most economical operating conditions.

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Combining simulation and optimization to derive operating policies for a concentrating solar power plant

et al. 2022

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Optimization of the operating conditions of gas-turbine power stations considering the effect of equipment deterioration

Cited by 11 publications

References 12 publications

Increasing capacity of a nuclear power plant unit using the hydrogen‐fueled feedwater heating system

Increasing capacity of a nuclear power plant unit using the hydrogen‐fueled feedwater heating system

Performance Assessment and Economic Analysis of a Gas-Fueled Islanded Microgrid—A Malaysian Case Study

Combining simulation and optimization to derive operating policies for a concentrating solar power plant

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