Computational Modeling and Simulation of a 36,5 MWel Combined Cycle Power Plant

U ovom radu opisan je princip rada kombiniranog plinsko-parnog postrojenja te izrada računalnih simulacija kombiniranog postrojenja koje se sastoji od jednog plinskog turbinskog postrojenja i parno turbinskog postrojenja s dvotlačnim utilizatorom. Ukupna zadana snaga postrojenja je 36,5 MWel, od kojih se 25 MWel proizvodi na plinskom dijelu, a preostalih 11,5 MWel na parnom dijelu postrojenja. U sklopu rada provedena je analiza u dva računalna programa; EBSILON Professional i TRNSYS. Svaki program je kratko opisan te se detaljno opisala izrada simulacije za svaki dio postrojenja. U radu su priloženi dijagrami dobiveni u programima. Također je obuhvaćen i analitički proračun, po kojem su uspoređivani podaci dobiveni računskim putem. Za kraj se provela eksergetska i energetska analiza za različite parametre rada.This master thesis describes the operating principle and computational simulation of a combined cycle power plant consisting of a gas turbine power plant and a steam turbine power plant with a dual pressure heat recovery steam generator (HRSG). The total specified capacity of the plant is 36.5 MWel, with 25 MWel generated in the gas part and the remaining 11.5 MWel in the steam part of the plant. As part of this study, an analysis was performed using two software programs: EBSILON Professional and TRNSYS. Each program is briefly introduced, followed by a detailed description of the simulation setup for each plant section. The diagrams created with the software programs are included in this paper. In addition, an analytical calculation was performed to allow a comparison between the calculation data and the results obtained with the analytical approach. Finally, an exergy and energy analysis was performed for different operating parameters