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Energies 2015, 8(8), 7582-7592; doi:10.3390/en8087582

Performance Comparison between Steam Injected Gas Turbine and Combined Cycle during Frequency Drops

1
Department of Mechanical Engineering, K.N. Toosi University of Technology, Pardis Street, Vanak Square, Tehran 19991 43344, Iran
2
Division of Thermal Power Engineering, Department of Energy Sciences, Lund University, Ole Römers väg 1, Lund SE-221 00, Sweden
*
Author to whom correspondence should be addressed.
Academic Editor: Chang Sik Lee
Received: 5 May 2015 / Revised: 16 July 2015 / Accepted: 17 July 2015 / Published: 24 July 2015
View Full-Text   |   Download PDF [280 KB, uploaded 24 July 2015]   |  

Abstract

Single-shaft gas turbine and its cycles are sensitive to frequency drops and, therefore, sudden change loads or large frequency dips might affect their stability. This phenomenon is related to the reduction of the air mass flow passing through the machine during the frequency dips, which might lead to an interaction between governor and temperature control loop. In this paper, the performance of the combined cycle and steam-injected gas turbine are studied during frequency dips and transient maneuvers. For this purpose, two similar units are developed based on these cycles and their performances are studied in different scenarios. The simulation results show that the steam injected gas turbine has a better performance during frequency drops and it can handle relatively larger change loads. View Full-Text
Keywords: combined cycle; wet cycle; STIG turbine; frequency control combined cycle; wet cycle; STIG turbine; frequency control
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bahrami, S.; Ghaffari, A.; Genrup, M.; Thern, M. Performance Comparison between Steam Injected Gas Turbine and Combined Cycle during Frequency Drops. Energies 2015, 8, 7582-7592.

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