Analyzing of thermodynamic parameters of 300 MW power plant in four different methods of repowering using Gatecycle software
Analiza termodynamiczna układu siłowni parowej o mocy 300 MW dla czterech wariantów modernizacji z wykorzystaniem aplikacji Gatecycle
Artur Harutyunyan, Krzysztof Badyda, Marcin Wołowicz
Streszczenie
In this presented paper the concept of repowering in existing steam cycle power plant was discussed. Mentioned
300 MW steam cycle power plant is located on 1724 m above sea level and equipped with once-trough steam boiler with
supercritical parameters and powered by natural gas. Using commercial software, four different repowering methods has
been simulated on that power plant. There were feed water heating repowering method, hot windbox repowering method,
parallel hot windbox repowering method and complete repowering method with maximum supplementary firing. Then
thermodynamic analysis of power plant model before and after each repowering method has been investigated. To that end
three different gas turbines has been used: Siemens V84.2, ABB GT11N2 and Alstom GT13E2 types. To analyze the
models, calculations were performed with two stages: 1) calculation and analyzes of thermodynamic parameters as well as
carbon dioxide (CO2) emissions of the power plant model in mentioned above cases. 2) Calculations of thermodynamic
parameters in values 100, 90, 80, 70, 60 and 50 % of the power plant net cycle power in the different cases to show the
advantage of different repowering methods behavior in part loads.
300 MW steam cycle power plant is located on 1724 m above sea level and equipped with once-trough steam boiler with
supercritical parameters and powered by natural gas. Using commercial software, four different repowering methods has
been simulated on that power plant. There were feed water heating repowering method, hot windbox repowering method,
parallel hot windbox repowering method and complete repowering method with maximum supplementary firing. Then
thermodynamic analysis of power plant model before and after each repowering method has been investigated. To that end
three different gas turbines has been used: Siemens V84.2, ABB GT11N2 and Alstom GT13E2 types. To analyze the
models, calculations were performed with two stages: 1) calculation and analyzes of thermodynamic parameters as well as
carbon dioxide (CO2) emissions of the power plant model in mentioned above cases. 2) Calculations of thermodynamic
parameters in values 100, 90, 80, 70, 60 and 50 % of the power plant net cycle power in the different cases to show the
advantage of different repowering methods behavior in part loads.