THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Anping Wan

,

Ting Chen

PERFORMANCE DEGRADATION ANALYSIS OF COMBINED CYCLE POWER PLANT UNDER HIGH AMBIENT TEMPERATURE

ABSTRACT
The mechanism of performance degradation of a natural gas combined cycle power plant under high ambient temperature is studied by analysing the performance characteristics and thermal properties of the working fluids. Real operating data under typical seasonal conditions are collected and studied. The results reveal that the power output of the natural gas combined cycle system decreases by 22.6%, and the energy efficiency decreases from 57.28-56.3% when the ambient temperature increases from 5-35°C. Gas turbine total power output and steam turbine power output decrease by 17.0% and 16.2%, respectively, as ambient temperature increases from 5-35°C. The enthalpy difference of the flue gas between the turbine inlet and outlet change slightly with varying ambient temperature. The fuel and air input decrease by 16.0% and 16.2%, respectively, as ambient temperature increases from 5-35°C. By analysing the calculated results, the decrement in air and fuel input d is considered as the immediate cause of system power output reduction. The proportion of power consumed by air compressor reaches 50.4% at 35°C. This is considered to be caused by air compressor idle.
KEYWORDS
NGCC, Performance degradation, ambient temperature, enthalpy
PAPER SUBMITTED: 2021-02-21
PAPER REVISED: 2021-05-26
PAPER ACCEPTED: 2021-05-27
PUBLISHED ONLINE: 2021-07-10
DOI REFERENCE: https://doi.org/10.2298/TSCI210221226W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 2, PAGES [1897 - 1906]
REFERENCES
  1. Sheibani, M.R., et al., Economics of energy storage options to support a conventional power plant: A stochastic approach for optimal energy storage sizing. Journal of Energy Storage, (2020), pp.101892.
  2. Adhami, H., Development and thermoeconomic analysis of a 250 MW steam power plant by gas turbine, photovoltaic, photovoltaic/thermal and absorption chiller. Solar Energy, 209 (2020), pp.123-134.
  3. Romeo, L.M., et al., Reducing cycling costs in coal fired power plants through power to hydrogen. International Journal of Hydrogen Energy, 45 (2020), 48, pp. 25838-25850.
  4. Revathy, G., et al., Optimization study on competence of power plant using gas/steam fluid material parameters by machine learning techniques. Materials Today: Proceedings (2020).
  5. Yazdani, S., et al., A comparison between a natural gas power plant and a municipal solid waste incineration power plant based on an energy analysis. Journal of Cleaner Production, 274 (2020), pp. 123158.
  6. Khajepour, S. and Ameri, M., Techno-economic analysis of a hybrid solar Thermal-PV power plant. Sustainable Energy Technologies and Assessments, 42 (2020), pp. 100857.
  7. Simla, T. and Stanek, W., Influence of the wind energy sector on thermal power plants in the Polish energy system. Renewable Energy, 161(2020), pp. 928-938.
  8. Mahmood, I., et al., Modeling, simulation and forecasting of wind power plants using agent-based approach. Journal of Cleaner Production, 276 (2020), pp. 124172.
  9. Wang, Y. , et al., Performance analysis of an improved 30 MW parabolic trough solar thermal power plant. Energy, 213 (2020), pp.118862.
  10. Heidarnejad, P., et al., A comprehensive approach for optimizing a biomass assisted geothermal power plant with freshwater production: Techno-economic and environmental evaluation. Energy Conversion and Management, 226 (2020), pp. 113514.
  11. Kasumu, A.S., et al., Country-level life cycle assessment of greenhouse gas emissions from liquefied natural gas trade for electricity generation. Environmental Science & Technology, 52 (2018), 4, pp. 1735-1746.
  12. Meegahapola, L. and Flynn, D., Characterization of gas turbine lean blowout during frequency excursions in power networks. IEEE Transactions on Power Systems, 30 (2015), 4, pp. 1877-1887.
  13. Xiang, Y., et al., Study on the configuration of bottom cycle in natural gas combined cycle power plants integrated with oxy-fuel combustion. Applied Energy, 212 (2018), pp. 465-477.
  14. F. Alobaid, Start-up improvement of a supplementary-fired large combined-cycle power plant. Journal of Process Control, 64 (2018), pp. 71-88.
  15. Ibrahim, T.K. , et al., Thermal performance of gas turbine power plant based on exergy analysis. Applied Thermal Engineering, 115 (2017), pp. 977-985.
  16. Chmielniak, T., et al., Simulation modules of thermal processes for performance control of CHP plant with a gas turbine unit. Applied Thermal Engineering, 27 (2007), 13, pp. 2181-2187.
  17. Yu, H., et al., An improved combined heat and power economic dispatch model for natural gas combined cycle power plants. Applied Thermal Engineering, 181 (2020), pp. 115939.
  18. Esquivel Patiño, G.G. and Nápoles Rivera, F., Global warming potential and net power output analysis of natural gas combined cycle power plants coupled with CO2 capture systems and organic Rankine cycles. Journal of Cleaner Production, 208 (2019), pp. 11-18.
  19. Kahraman, M., et al., Thermodynamic and thermoeconomic analysis of a 21 MW binary type air-cooled geothermal power plant and determination of the effect of ambient temperature variation on the plant performance. Energy Conversion and Management, 192 (2019), pp. 308-320.
  20. Ünal, F., Özkan, D. B., Application of exergoeconomic analysis for power plants. Thermal Science, 22 (2017), 6A, pp. 2653-2666.
  21. Alus, M., et al., Optimization of the triple-pressure combined cycle power plant, Thermal Science, 16 (2012), 3, pp. 901-914.
  22. Xu, C., et al. Performance improvement of a 330MWe power plant by flue gas heat recovery system, Thermal Science 20 (2014), pp.99-99.
  23. Şen, G., et al., The effect of ambient temperature on electric power generation in natural gas combined cycle power plant—A case study. Energy Reports, 4 (2018), pp. 682-690.
  24. Hashmi, M.B., et al., Combined effect of inlet air cooling and fouling on performance of variable geometry industrial gas turbines. Alexandria Engineering Journal, 59 (2020) 3, pp.1811-1821.
  25. Kwon, H.M., et al., Performance enhancement of the gas turbine combined cycle by simultaneous reheating, recuperation, and coolant inter-cooling. Energy, 207 (2020), pp. 118271.
  26. Majdi Yazdi, M.R., et al., Comparison of gas turbine inlet air cooling systems for several climates in Iran using energy, exergy, economic, and environmental (4E) analyses. Energy Conversion and Management, 216 (2020), pp.112944.
  27. Liu, Z., et al., A novel inlet air cooling system based on liquefied natural gas cold energy utilization for improving power plant performance. Energy Conversion and Management, 187 (2019), pp. 41-52.
PDF VERSION [DOWNLOAD]
Performance degradation analysis of combined cycle power plant under high ambient temperature

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence