Modelling the transient behaviour of gas turbines
Апстракт
As a consequence of the increasing share of renewable energy sources in present-day electrical grid systems, time variations of the power demand for fossil fuel plants can become more sudden. Therefore, an ability to respond to sudden load changes becomes an important issue for power generation gas turbines. This paper describes a real-time model for predicting the transient performance of gas turbines. The method includes basic transient phenomena, such as volume packing and the heat transfer between the working fluid and the structural elements. The dynamics of components are quantified by solving ordinary differential equations with appropriate initial and boundary conditions. Compressor and turbine operating points are determined from corresponding performance maps previously calculated using sophisticated aerodynamic, through-flow codes. This includes a sufficient number of such characteristics to account for the variations in speed and machine geometry. The developed dynamic mode...l was verified by comparison of simulation results with experimentally recorded operating parameters for a real engine. This includes the start-up sequence and the change of load. Additional simulation covers the system response to a step increase in fuel flow. The simulation is carried out faster than the real process.
Извор:
Proceedings of the ASME Turbo Expo, 2019, 2A-2019Издавач:
- American Society of Mechanical Engineers (ASME)
Финансирање / пројекти:
- Flexible Fossil Power Plants for the Future Energy Market through new and advanced Turbine Technologies (EU-653941)
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Petković, Đorđe AU - Banjac, Milan AU - Milić, Srđan AU - Petrović, Milan AU - Wiedermann, Alexander PY - 2019 UR - https://machinery.mas.bg.ac.rs/handle/123456789/3183 AB - As a consequence of the increasing share of renewable energy sources in present-day electrical grid systems, time variations of the power demand for fossil fuel plants can become more sudden. Therefore, an ability to respond to sudden load changes becomes an important issue for power generation gas turbines. This paper describes a real-time model for predicting the transient performance of gas turbines. The method includes basic transient phenomena, such as volume packing and the heat transfer between the working fluid and the structural elements. The dynamics of components are quantified by solving ordinary differential equations with appropriate initial and boundary conditions. Compressor and turbine operating points are determined from corresponding performance maps previously calculated using sophisticated aerodynamic, through-flow codes. This includes a sufficient number of such characteristics to account for the variations in speed and machine geometry. The developed dynamic model was verified by comparison of simulation results with experimentally recorded operating parameters for a real engine. This includes the start-up sequence and the change of load. Additional simulation covers the system response to a step increase in fuel flow. The simulation is carried out faster than the real process. PB - American Society of Mechanical Engineers (ASME) C3 - Proceedings of the ASME Turbo Expo T1 - Modelling the transient behaviour of gas turbines VL - 2A-2019 DO - 10.1115/GT2019-91008 ER -
@conference{ author = "Petković, Đorđe and Banjac, Milan and Milić, Srđan and Petrović, Milan and Wiedermann, Alexander", year = "2019", abstract = "As a consequence of the increasing share of renewable energy sources in present-day electrical grid systems, time variations of the power demand for fossil fuel plants can become more sudden. Therefore, an ability to respond to sudden load changes becomes an important issue for power generation gas turbines. This paper describes a real-time model for predicting the transient performance of gas turbines. The method includes basic transient phenomena, such as volume packing and the heat transfer between the working fluid and the structural elements. The dynamics of components are quantified by solving ordinary differential equations with appropriate initial and boundary conditions. Compressor and turbine operating points are determined from corresponding performance maps previously calculated using sophisticated aerodynamic, through-flow codes. This includes a sufficient number of such characteristics to account for the variations in speed and machine geometry. The developed dynamic model was verified by comparison of simulation results with experimentally recorded operating parameters for a real engine. This includes the start-up sequence and the change of load. Additional simulation covers the system response to a step increase in fuel flow. The simulation is carried out faster than the real process.", publisher = "American Society of Mechanical Engineers (ASME)", journal = "Proceedings of the ASME Turbo Expo", title = "Modelling the transient behaviour of gas turbines", volume = "2A-2019", doi = "10.1115/GT2019-91008" }
Petković, Đ., Banjac, M., Milić, S., Petrović, M.,& Wiedermann, A.. (2019). Modelling the transient behaviour of gas turbines. in Proceedings of the ASME Turbo Expo American Society of Mechanical Engineers (ASME)., 2A-2019. https://doi.org/10.1115/GT2019-91008
Petković Đ, Banjac M, Milić S, Petrović M, Wiedermann A. Modelling the transient behaviour of gas turbines. in Proceedings of the ASME Turbo Expo. 2019;2A-2019. doi:10.1115/GT2019-91008 .
Petković, Đorđe, Banjac, Milan, Milić, Srđan, Petrović, Milan, Wiedermann, Alexander, "Modelling the transient behaviour of gas turbines" in Proceedings of the ASME Turbo Expo, 2A-2019 (2019), https://doi.org/10.1115/GT2019-91008 . .