Modeling and investigation start-up procedures of a combined cycle power plant

Alobaid, Falah; Postler, Ralf; Ströhle, Jochen; Epple, Bernd; Kim, Hyun-Gee

doi:10.1016/j.apenergy.2008.03.003

Cited by 117 publications

(71 citation statements)

References 7 publications

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“…It is expected to gain added profit from the additionally produced energy in the market and decrease the adverse influence of cycling operation on equipment technical resource through the reduction of startups and change of their types to the less adverse ones. The last is taken for granted without numerical evidence based on literature [4,11,28,29] and know-how.…”

Section: Development Of the Optimization Modelmentioning

confidence: 99%

An approach to optimize the cycling operation of conventional combined heat and power plants

Ivanova¹,

Grebesh²,

Mutule³

et al. 2018

energetika

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The implementation of the market mechanism, which includes electricity price fluctuation, and a wide integration of intermittent generation, namely solar PV and wind energy, in energy production have changed the role and operation manner of conventional generation. It is partly or not at all adapted to new running conditions. Therefore, the efficiency and flexibility of conventional generation has to be improved. The numerical approach is developed in the context of combined cycle gas turbine (CCGT) technology to adapt its running conditions to the electricity market mechanism. The developed approach was verified on a case study of the Baltic States (Latvia) examples in a multi-paradigm numerical computing environment MATLab. The obtained results show that the added profit is gained through production of supplementary electricity, and the impact of cycling operation is reduced through the decrease of cycling operation ranges numbers and the substitution of start-up with a less adverse one from a technical and economical point of view. The developed approach can be adapted to various technologies and situations by adding appropriate characteristics and constraints of technology.

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Section: Development Of the Optimization Modelmentioning

confidence: 99%

An approach to optimize the cycling operation of conventional combined heat and power plants

Ivanova¹,

Grebesh²,

Mutule³

et al. 2018

energetika

View full text Add to dashboard Cite

show abstract

“…There are a many papers on the optimization and design of utility systems [61][62][63][64][65][66][67] ranging from simplified linear models to thermodynamic based approaches, going through detailed studies about startup and operation [68,69].…”

Section: Case Studymentioning

confidence: 99%

Integration of different models in the design of chemical processes: Application to the design of a power plant

2014

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With advances in the synthesis and design of chemical processes there is an increasing need for more complex mathematical models with which to screen the alternatives that constitute accurate and reliable process models. Despite the wide availability of sophisticated tools for simulation, optimization and synthesis of chemical processes, the user is frequently interested in using the 'best available model'. However, in practice, these models are usually little more than a black box with a rigid input-output structure. In this paper we propose to tackle all these models using generalized disjunctive programming to capture the numerical characteristics of each model (in equation form, modular, noisy, etc.) and to deal with each of them according to their individual characteristics. The result is a hybrid modular -equation based approach that allows synthesizing complex processes using different models in a robust and reliable way. The capabilities of the proposed approach are discussed with a case study: the design of a utility system power plant that has been decomposed into its constitutive elements, each treated differently numerically. And finally, numerical results and conclusions are presented.

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“…This combination produces electricity more efficiently than either the gas turbine or steam turbine alone which causes a very good ratio of transformed electrical power per CO 2 emission. The combined cycle power plants are characterized as the 21 st century power generation by their high efficiency and possibility to operate on different load conditions by reason of variation in consumer load [1]. They are particularly suitable for managing peak and cyclic loads, i.e., daily start/stop operations, since their response characteristics are better than those of other conventional power plants such as fossil fuel and nuclear power plants [2].…”

Section: Introductionmentioning

confidence: 99%

“…A combination between wind power and other energy sources such as combined cycles with improved load flexibility should be used in order to mitigate the economic effects of wind variability [1].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the dynamic characteristics of a singlepressure combined-cycle power plant

Ghaedi¹

2012

IOSRJEN

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:-Gas/steam combined-cycles are well-known technology for power generation due to their numerous advantages including high efficiency and low environmental emission. A power plant is basically operated on its design conditions or full-load operation. However, it also operates on the socalled off-design conditions due to some conditions like power load variation, process requirements or even start-up and shut down. Therefore, the transient behavior of the system should be known for the safe operation and reliable control. The purpose of this paper was investigation of thermodynamic parameters' behavior of single-pressure system due to load reduction of gas turbine as the input data. In this study the transient behavior of the system predicted by dynamic simulation. This simulation was done using mass and energy conservation equations for each component as a control volume. Governing equations set was solved by an appropriate numerical method and the results were illustrated in some figures.

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Modeling and investigation start-up procedures of a combined cycle power plant

Cited by 117 publications

References 7 publications

An approach to optimize the cycling operation of conventional combined heat and power plants

An approach to optimize the cycling operation of conventional combined heat and power plants

Integration of different models in the design of chemical processes: Application to the design of a power plant

Analysis of the dynamic characteristics of a singlepressure combined-cycle power plant

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