Thermodynamic Simulation of A Combined Cycle Power Plant At Part-Load Operation
DOI:
https://doi.org/10.13052/dgaej2156-3306.2343Keywords:
Sensitivity, parametric, optimization, part load.Abstract
A 355 MW combined-cycle power plant has been modeled and
simulated at part loads. Results of a sensitivity analysis of the effect of
high pressure (HP) on the combined-cycle performance are presented.
The best combination of process parameters of steam leaving the steam
generator that will give optimum performance of the combined-cycle
power plant were determined at part load operation. Results for the
optimum values of thermal efficiency and power output, together with
values of the decision variables, are presented. At part loads, the plant
demands lower values of HP pressure to get a suitable dry steam at the
steam turbine exit. The combined cycle gives higher power output with
high efficiency at full load comparatively at partial loads.
Downloads
References
. Kail, C. Evaluation of Advanced Combined Cycle Power Plants. Proceedings of the
Institution of Mechanical Engineers, Part A, Journal of Power and Energy, 1999, Vol.
, No A1, pp. 1 –12.
. Pasha, A. and Sanjeev, J. Combined Cycle Heat Recovery Steam Generators Opti-
mum Capabilities and Selection Criteria. Heat Recovery Systems and CHP, 1995, 15(2),
-154.
. Ongiro, A., Ugursal, V.I., Taweel, A.M. and Walker, J.D. Modeling of Heat Recovery
Steam Generator Performance. Applied Thermal Engineering, 1997, 17(5), 427-446.
. Ganapathy, V., Heil, B. and Rentz, J. Heat Recovery Steam Generator for Cheng Cycle Application. Industrial Power Conference - PWR, 1988, 4, 1988.
. Subrahmanyam, NVRSS, Rajaram, S. and Kamalanathan, N. HRSGs for Combined
Cycle Power Plants. Heat Recovery Systems and CHP, 1995, 15(2), 155-161.
. Noelle, M. and Heyen, G. Mathematical Modeling and Design of an Advanced
Once-through Heat Recovery Steam Generator. Computers and Chemical Engineering,
, 28, 651-660.
. Ragland, A. and Stenzel, W. Combined Cycle Heat Recovery Optimization. Proceed-
ings of 2000 International Joint Power Generation Conference, 2000, Miami Beach,
Florida, 23-26.
. Casarosa, F., Donatini and Franco, A. Thermoeconomic Optimization of Heat Re-
covery Steam Generators Operating Parameters for Combined Plants. Energy, 2004,
(3), 389–414.
. Dechamps, P.J. Advanced Combined Cycle Alternatives with the Latest Gas Tur-
bines. ASME Journal of Engineering for Gas Turbines and Power, 1998, Vol. 120, pp.
–357.
. Sorgel, G. Dampf- und Gas turbines, 4 Lehrbrief, 1993, VMS Verlag Modernes
Studieren, Hamburg – Dresden.
. Saravanamottoo, H., Roger, G. and Cohen, H., Gas-Turbine Theory, 2003, 5th Ed.
Pearson Education, Singapore.
