Effects of rising dynamic requirements on the lifetime consumption of a combined cycle gas turbine power plant

Genetic Algorithm Approach to Design of Multi-Layer Perceptron for Combined Cycle Power Plant Electrical Power Output Estimation

“…Number of neurons in the second hidden layer l n G 4 Activation function in the second hidden layer l a G 5 Activation function in the output layer l a G 6 Batch size…”

“…Today, engineers and researchers intensively investigate operation and made improvements of such power plants (for CCPPs which are currently in operation), while a new CCPPs are built in many countries worldwide. When CCPPs are compared with other power plants, it can be noticed that the CCPPs are achieving significantly higher efficiencies (usually higher than 60%) [2], with lower specific emmisions [3], and quick start capability (gas turbine cycle) while requiering lower operation and maintenance cost [4]. Due to high complexity of CCPPs, in its investigation and analysis during operation, it is common to use various dynamic numerical simulations for predicting the changes in measured, as well as for calculating non-measured, operating parameters [5].…”

Avaliação De Desempenho De Usina Termelétrica Operando Com Cogeração De Energia/Performance Evaluation of a Thermal Power Plant Operating With Cogeneration Power

“…O crescimento exponencial da população nacional demandou diversos setores de produção de energia a buscar alternativas tecnológicas para atender a matriz energética, sem que afete seu armazenamento e transmissão (SALPINGIDOUA et al, 2017;WITTENBURG et al, 2019). Um dos modelos adotados é a geração de energia por centrais hidrelétricas que constitui a principal fonte, mas por questões meteorológicas, conforme a instabilidade no regime de chuvas e períodos de baixa pluviosidade, implica em novos planos estratégicos em virtude da demanda e disponibilidade para diferentes áreas geográficas (BELYAKOV, 2019; IBRAHIM & RAHMAN, 2012).…”

Qualitative phenomenological investigation of the transient temperature gradient during gas turbine's hot section component cooling

“…There are some problems like predicting a life expectancy for the hot section components of a gas turbine where metal temperature gradients should be estimated in transient operation modes. [10][11][12] The unsteady coupled gas-solid simulations to predict the required temperature gradients are very time consuming and so an alternative technique is used 13,14 whose details are described in the next section. In the present study, at prevalent procedure to predict the metal temperature that is based on quasi-steady simulations is explained and its weakness is shown, and the importance of performing the unsteady conjugate heat transfer simulation for accurate studies is emphasized by introducing a simple qualitative phenomenological model that is utilized to demonstrate the possibility of the transient behavior of this problem, which cannot be predicted using the prevalent technique.…”