The characteristics of ultramodern combined cycle power plants

Kotowicz, J.; Job, Marcin; Brzęczek, Mateusz

doi:10.1016/j.energy.2015.04.006

Cited by 54 publications

(18 citation statements)

References 7 publications

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“…Therefore, the analysis presented here offers the ability to anticipate the future, and the results of calculations obtained with it offer a rational selection of energy technologies and equipment. In the literature in this area, existing reports usually focus on combined gas and steam mono-fuel systems, also so-called CCPP [2][3][4][5]. A small number of works relate to the dual-fuel gas-steam system and only deal with a few specific cases of parallel and serial connection of a gas turbine with a steam turbine [1,[6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Methodology Of Technical and Economic Analysis Of Dual-fuel mentioning

confidence: 99%

“…To use the resources in a rational way from the point of view of technology, the combustion of coal should apply so-called clean technology. Dual-fuel gas-steam technology forms an example, as the Joule gas turbine cycle is coupled with the Clausius-Rankine cycle of a steam turbine in a parallel or serial system in it [1][2][3]. Moreover, when coal combustion in dual-fuel gas-steam systems takes place with the simultaneous production of electricity and useful heat, for example to cater meet the demands of municipal heating, this will additionally lead to a significant reduction in global coal consumption resulting in a decrease of the emission of harmful combustion products into the environment.…”

Section: Introductionmentioning

confidence: 99%

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Methodology and Continuous Time Mathematical Model to Select Optimum Power of Gas Turbine Set for Dual-Fuel Gas-Steam Combined Heat and Power Plant in Parallel System

et al. 2018

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This paper contains the results of a study in which a novel approach using continuous time notation was applied in the search for the optimum capacity of a gas turbine designed for a dual-fuel gas-steam combined heat and power plant in a parallel system. As a result of the application of mathematical models of any functions that account for variations in time of all integrand quantities, for example prices of energy carriers, the model that was developed provides a way to analyze complex dependencies. The results of calculations obtained as a result of using this notation provide a rational selection of technologies and equipment designed for the energy industry. The results are based on an analysis involving a combined heat and power plant with an extraction-condensing steam turbine and extraction backpressure steam turbine for a wide range of the variability in energy prices and environmental charges corresponding to the current prices and environmental charges. All the curves were obtained using innovative methodology and mathematical model in which the total, discounted profit is calculated at the given moment and expressed as NPV achieved from the operation of dual-fuel gas-steam combined heat and power (CHP) plant.

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Section: Methodology Of Technical and Economic Analysis Of Dual-fuel mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Methodology and Continuous Time Mathematical Model to Select Optimum Power of Gas Turbine Set for Dual-Fuel Gas-Steam Combined Heat and Power Plant in Parallel System

et al. 2018

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“…As a consequence, a number of PP configurations have been introduced, i.e., those with a single reheat [12], those with a double reheat [13], those with a regenerative-also called tuning-turbine [14], and solutions utilising waste heat to improve PP efficiency [15]. The development of such technology also presents a number of challenges in the development of even more advanced combined gas-steam cycles [16,17].…”

Section: Introductionmentioning

confidence: 99%

Power Plant Optimisation—Effective Use of the Nelder-Mead Approach

et al. 2020

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This paper demonstrates the use of a combined software package including IPSEpro and MATLAB in the optimisation of a modern thermal cycle. A 900 MW power plant unit (operating at ultra-supercritical conditions) was considered as the study object. The Nelder-Mead simplex-based, direct search method was used to increase power plant efficiency and to find the optimal thermal cycle configuration. As the literature reveals, the Nelder-Mead approach is very sensitive to the simplex size and to the choice of method coefficients, i.e., reflection, expansion and contraction. When these coefficients are improperly chosen, the finding of the optimal solution cannot be guaranteed, particularly in such complex systems as thermal cycles. Hence, the main goal of the present work was to demonstrate the capability of an integrated software package including IPSEpro, MATLAB and MS Excel in the optimisation process of a complex thermal cycle, as well as to examine the effectiveness of the most popular sets of Nelder-Mead coefficients previously proposed by other researchers. For the investigation purposes, the bleed and outlet pressures from the turbines were considered as decision variables, and the power plant efficiency was used as an objective function.

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“…Gas turbine engines are currently widely distributed in combined-cycle power units when modernizing and replacing the equipment of power plants. [1][2][3][4] Gas turbine engines use natural gas as a fuel gas, which is a mixture of hydrocarbons, the composition of which depends on the specific gas field. The gas composition determines the combustion process occurring in the combustion chamber, and the composition of the combustion products.…”

Section: Introductionmentioning

confidence: 99%

Research on the influence of fuel gas on energy characteristics of a gas turbine

2019

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The purpose of this paper is to study and analyze the gas turbine engine and the thermodynamic cycle of a gas turbine. The article describes the processes of influence of the working fluid composition on the parameters of the main energy gas turbines, depending on the composition of the fuel gas. The calculations of the thermal scheme of a gas turbine, which were made using mathematical modeling, are given. As a result of research on the operation of the GE PG1111 6FA gas turbine installation with various gas compositions, it was established that when the gas turbine is operating on different fuel gases, the engine efficiency changes. The gas turbine efficiency indicators were determined for various operating parameters and fuel composition. The impact of fuel components on the equipment operation is revealed.

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The characteristics of ultramodern combined cycle power plants

Cited by 54 publications

References 7 publications

Methodology and Continuous Time Mathematical Model to Select Optimum Power of Gas Turbine Set for Dual-Fuel Gas-Steam Combined Heat and Power Plant in Parallel System

Methodology and Continuous Time Mathematical Model to Select Optimum Power of Gas Turbine Set for Dual-Fuel Gas-Steam Combined Heat and Power Plant in Parallel System

Power Plant Optimisation—Effective Use of the Nelder-Mead Approach

Research on the influence of fuel gas on energy characteristics of a gas turbine

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