Modelling of flexible boiler operation in coal fired power plant

International Conference on the Sustainable Energy and Environmental Development

生态环境科学

Zyrkowski, M.^1 ; Zymelka, P.^1

R and D Department, EDF Polska S.A., Cieplownicza 1 street, Krakow

31-357, Poland^1

关键词: Boiler operations;    Coal power plants;    Coal-fired power plant;    Energy markets;    Market condition;    Operation parameters;    Professional software;    Renewable energy source;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/214/1/012074/pdf
DOI  :  10.1088/1755-1315/214/1/012074

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Polish energy market is comprised of numerous aged 200 MWe coal units. In order to work in changing market conditions - with growing number of renewable energy sources as well as new supercritical coal power plants - these units will be forced to work with extended flexibility. It results in ability to change load level faster and to extend their designed load range. It is both challenge for turbine and boiler part of the power plant, designed to work as the base load unit. Study presented in the article was performed in order to analyse behaviour of one 225 MWe coal unit, working in extended load range (from 90 - 225 MWe), by using Ebsilon®Professional software. The major goal of study, was to verify crucial operation parameters in the load range below designed technical minimum (90-135 MWe). Two models - turbine part and boiler part - were prepared and validated, using reliable data from test campaign performed in-situ. In this article, the boiler behaviour is comprehensively described with indication of issues that must be addressed when considering boiler operation in load range below its technical minimum.