Industrial Gas Turbine Engine Off-Design Performance Improvement Controlling Cooling Air Flow
The modern gas turbine engine has been used in current power generation industry for almost half a century. They are designed to operate with the best efficiency during normal operating conditions and at specific operating points. However, due to power grid demands, different ambient temperatures, fuel types, relative humidity and driven equipment speed the gas turbine units have to work today on partial load too, which can affect the hot gas path condition and life expectancy. At these off-design conditions, gas turbine’s efficiency and life deterioration rate might significantly deviate from the design specifications. In this paper, a digital twin concept for gas turbine unit off-design performance prediction (AxSTREAM® platform) is used. The description of created digital twin is presented. The validation of proposed gas turbine unit digital twin is carried out by comparison with literature source test data. The GTU performance estimation controlling cooling air at part load modes using digital twin was performed.
Shnee J. I., Capinos V. M., Kotlar I. V., (1976), Gas turbines. Thermodynamic processes heatexchanginginthedesigns,HighSchool, Kyiv, 296 p.
El Hadik A. A. (1990), "The impact of atmospheric conditions on gas turbine performance", Journal of Engineering ofGasTurbine and Power, Vol. 112(4), pp. 590–596.
Ancona M. A., Bianchi M., Melino F. et al. (2015), "Power Augmentation Technologies: Part I - Literature Review",Proceedingsof ASME Turbo Expo 2015: Turbine Technical Conference and Exposition, 2015, GT2015-43159.
Facchini B. (1993), "A simplified approach to off-design evaluation of single shaft heavy duty gas turbines", ASME Cogen-Turbo, IGTI, Vol. 8, pp. 189–197.
Wojciech Kosman. (2015), "Matching of a Gas Turbine and an Upgraded Supercritical Steam Turbine in Oﬀ-DesignOperation",Journal of Power Technologies, No. 95(1), pp. 90–96.
Kurz Rainer, Brun Klaus. (2000), "Gas Turbine Performance - What Makes The Map?", Proceedings of the 29thturbomachinerysymphosium, pp. 247–262.
Kaikko Juha. (1998), "Performance prediction of gas turbines by solving a system of non-linear equations", Thesis forthedegree of Doctor of Technology, University of Technology, Lappeenranta, Finland on the 6th of March, 100 p.
Janitha Kanishka Suraweera. (2011), "Off-Design Performance Prediction of Gas Turbines without the use of CompressororTurbine Characteristics", Master of Applied Science In Aerospace Engineering, Carleton University Ottawa,Ontario,254 p.
Moroz L., Govoruschenko Y., Pagur P. (2005), "Axial Turbine Stages Design: 1d/2d/3d Simulation, Experiment,Optimization",Proceedings of ASME Turbo Expo 2005, Reno-Tahoe, Nevada, USA, GT2005-68614.
Ihor S. Diakunchak and David R. Nevin. (1989), "Site Performance Testing of CW251 B10 Gas Turbines", ASME, 89-GT-142,8p.
Kholschevnikov K., Emin O., Mitrohin V. (1986), "Theory and calculation of the blade machines", Machine construction,1986,pp. 267–267.
Moroz L., Govoruschenko Yu., Pagur P. (2006), "A uniform approach to conceptual design of axial turbine/compressorflowpath", The Future of Gas Turbine Technology. 3rd International Conference, October 2006,Brussels,Belgium.
Moroz L., Govoruschenko Yu., Pagur P. (2005), "Axial turbine stages design: 1d/2d/3d simulation, experiment,optimization",Proceedings of ASME Turbo Expo 2005, Reno-Tahoe, Nevada, USA, GT2005-68614
SoftInWay Inc. (2016), AxSTREAM NET™ user documentation.
SoftInWay Inc. (2017), AxSTREAM ION™ user documentation.