Comparative analysis of optimisation methods applied to thermal cycle of a coal fired power plant

• Autorzy: Kowalczyk Ł. , Elsner W.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a thermodynamic optimization of 900 MW power unit for ultra-supercritical parameters, modified according to AD700 concept. The aim of the study was to verify two optimisation methods, i.e., the finding the minimum of a constrained nonlinear multivariable function (fmincon) and the Nelder-Mead method with their own constrain functions. The analysis was carried out using IPSEpro software combined with MAT-LAB, where gross power generation efficiency was chosen as the objective function. In comparison with the Nelder-Mead method it was shown that using fmincon function gives reasonable results and a significant reduction of computational time. Unfortunately, with the increased number of decision parameters, the benefit measured by the increase in efficiency is becoming smaller. An important drawback of fmincon method is also a lack of repeatability by using different starting points. The obtained results led to the conclusion, that the Nelder-Mead method is a better tool for optimisation of thermal cycles with a high degree of complexity like the coal-fired power unit.

Słowa kluczowe

EN

thermodynamic optimisation; Nelder-Mead method; thermal cycle; coal fired power plant; IPSEpro

PL

optymalizacja termodynamiczna; metoda Neldera-Meada; cykl termiczny; elektrownia węglowa; IPSEpro

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2013
• Tom: Vol. 34, no. 4
• Strony: 175--186
• Opis fizyczny: Bibliogr. 11 poz., il.

Twórcy

autor

Kowalczyk Ł.

• Czestochowa University of Technology, Institute of Thermal Machinery, Armii Krajowej 21, 42-200 Częstochowa, Poland

autor

Elsner W.

• Czestochowa University of Technology, Institute of Thermal Machinery, Armii Krajowej 21, 42-200 Częstochowa, Poland

Bibliografia

• [1] BAUDIN M.: Nelder-Mead user's Manual. April 2010.
• [2] ELSNER W., DROBNIAK S., MAREK M., KOWALCZYK Ł.: The selection and analysis of the technological structure of 50+ power unit using thermodynamic criterion. Internal report, Task 16.1.IV1.1c, Gliwice 2013 (in Polish).
• [3] ELSNER W., KOWALCZYK Ł., M. MAREK M.: Numerical thermodynamic optimization of super-critical coal fired power plant in support of IPSEpro software. Arch. Thermodyn. 33(2012), 3, 101-110.
• [4] GRESOVNIK I.: Simplex Algorithms for Nonlinear Constraint Optimization Problems. Ljubljana 2009.
• [5] HITACHI Power Europe GmbH. In: 2nd Conf. on Exchange of Experiences between Poland and Japan in the Field of Clean Coal Technology, AGH, Cracow 2011.
• [6] KJAER S., DRINHAUS F.: A modified double reheat cycle. In: Proc. ASME 2010 Power Conf. Power 2010-27369.
• [7] KUSIAK J., DANIELEWSKA-TUŁECKA A., OPROCHA P.: Optimization. Selected Methods with Examples'. PWN, Warszawa 2009 (in Polish).
• [8] ŁUKOWICZ H., DYKAS. S., RULIK S., STĘPCZYŃSKA K.: Thermodynamic and economic analysis of a 900 MW ultra-supercritical power plant. Arch. Thermodyn, 32(2011), 3, 231-244.
• [9] Optimization Toolbox for use with MATLAB. User's Guide Version 2. The Math Works.
• [10] PAWLIK M., KOTLICKI T.: Innovative coal technologies to reduce CO2 emissions, Rynek Energii (2011), 3 (in Polish).
• [11] SimTech Simulation Technology: IPSEpro Proces Simulation Environment. System ver. 5.0.