This paper describes the mathematical model and the computational procedure adopted for the development of a modularly structured computer code able to simulate the dynamic behaviour of recuperative gas turbine power plants. For accurate simulation of the turbine components, the model includes a stage-by-stage procedure for the air-cooled turbine based on the blade geometry and the characteristics of the cooling system. The counter-flow surface heat exchanger, assumed as recuperator, is described by a set of partial differential equations, giving a one-dimensional description of the temperature for air, hot gas and metal. A single-shaft recuperated cycle gas turbine, provided with compressor variable inlet guide vanes, is analyzed. The transient cases caused by a step variation in the fuel flow and compressor guide vanes geometry are simulated and a linearized model is obtained, in order to identify the dynamic behaviour of the gas turbine and to design a multivariable controller. Finally, the transient case of a controlled turbine after a sudden variation in the electric load is simulated.

Dynamic Modelling of Recuperative Gas Turbines / Camporeale, S. M.; Fortunato, B.; Dumas, A.. - In: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS. PART A, JOURNAL OF POWER AND ENERGY. - ISSN 0957-6509. - STAMPA. - 214:3(2000), pp. 213-225. [10.1243/0957650001538317]

Dynamic Modelling of Recuperative Gas Turbines

Camporeale, S. M.;Fortunato, B.;
2000-01-01

Abstract

This paper describes the mathematical model and the computational procedure adopted for the development of a modularly structured computer code able to simulate the dynamic behaviour of recuperative gas turbine power plants. For accurate simulation of the turbine components, the model includes a stage-by-stage procedure for the air-cooled turbine based on the blade geometry and the characteristics of the cooling system. The counter-flow surface heat exchanger, assumed as recuperator, is described by a set of partial differential equations, giving a one-dimensional description of the temperature for air, hot gas and metal. A single-shaft recuperated cycle gas turbine, provided with compressor variable inlet guide vanes, is analyzed. The transient cases caused by a step variation in the fuel flow and compressor guide vanes geometry are simulated and a linearized model is obtained, in order to identify the dynamic behaviour of the gas turbine and to design a multivariable controller. Finally, the transient case of a controlled turbine after a sudden variation in the electric load is simulated.
2000
Dynamic Modelling of Recuperative Gas Turbines / Camporeale, S. M.; Fortunato, B.; Dumas, A.. - In: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS. PART A, JOURNAL OF POWER AND ENERGY. - ISSN 0957-6509. - STAMPA. - 214:3(2000), pp. 213-225. [10.1243/0957650001538317]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/2527
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