A simulation program for transient analysis of the startup procedure of heavy duty gas turbines for power generation has been constructed. Unsteady one-dimensional conservation equations are employed and equation sets are solved numerically using a fully implicit method. A modified stage-stacking method has been adopted to estimate the operation of the compressor. Compressor stages are grouped into three categories (front, middle, rear), to which three different stage characteristic curves are applied in order to consider the different low-speed operating characteristics. Representative startup sequences were adopted. The dynamic behavior of a representative heavy duty gas turbine was simulated for a full startup procedure from zero to full speed. Simulated results matched the field data and confirmed unique characteristics such as the self-sustaining and the possibility of rear-stage choking at low speeds. Effects of the estimated schedules on the startup characteristics were also investigated. Special attention was paid to the effects of modulating the variable inlet guide vane on startup characteristics, which play a key role in the stable operation of gas turbines.
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July 2002
Technical Papers
Dynamic Simulation of Full Startup Procedure of Heavy-Duty Gas Turbines
J. H. Kim, Senior Researcher,,
J. H. Kim, Senior Researcher,
Turbomachinery Department, Korea Aerospace Research Institute, Daejeon 305-600, Korea
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T. W. Song, Graduate Student,,
T. W. Song, Graduate Student,
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea
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T. S. Kim, Assistant Professor,,
T. S. Kim, Assistant Professor,
Department of Mechanical Engineering, Inha University, Inchon 402-751, Korea
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S. T. Ro, Fellow ASME, Professor,
S. T. Ro, Fellow ASME, Professor,
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea
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J. H. Kim, Senior Researcher,
Turbomachinery Department, Korea Aerospace Research Institute, Daejeon 305-600, Korea
T. W. Song, Graduate Student,
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea
T. S. Kim, Assistant Professor,
Department of Mechanical Engineering, Inha University, Inchon 402-751, Korea
S. T. Ro, Fellow ASME, Professor,
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, New Orleans, LA, June 4–7, 2001; Paper 01-GT-017. Manuscript received by IGTI, December 2000, final revision, March 2001. Associate Editor: R. Natole.
J. Eng. Gas Turbines Power. Jul 2002, 124(3): 510-516 (7 pages)
Published Online: June 19, 2002
Article history
Received:
December 1, 2000
Revised:
March 1, 2001
Online:
June 19, 2002
Citation
Kim, J. H., Song, T. W., Kim, T. S., and Ro, S. T. (June 19, 2002). "Dynamic Simulation of Full Startup Procedure of Heavy-Duty Gas Turbines ." ASME. J. Eng. Gas Turbines Power. July 2002; 124(3): 510–516. https://doi.org/10.1115/1.1473150
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