Optimization study of the 660 MW coal-fired power unit for elevated steam parameters
https://doi.org/10.21285/1814-3520-2019-1-107-114
Abstract
This paper carries out optimization studies of the 660 MW coal-fired power unit for elevated steam parameters by the criterion of maximum net efficiency and minimum specific investment. The dependence between the power unit efficiency and the lowest specific investment is built. Taking into account the need for accounting a large number of coal-fired power unit parameters the optimization studies were carried out using gradient methods of nonlinear mathematical programming. Due to the large number of calculations the computerized programming system (CPS) computational environment is used. The maximum efficiency obtained as a result of optimization calculation is 47.74%. The corresponding specific investment equals 3545.7 $/kW and the initial steam parameters are 35.4 MPa, 657/613оС. The minimum specific investment is 1884.6 $/kW. The corresponding efficiency equals 42.08%. The initial steam parameters are 15.5 MPa, 613/540оС. The 660 MW coal-fired power unit was optimized for elevated steam parameters by the criterion of maximum net efficiency and minimum specific investment. The dependence of the minimum specific investment on power unit net efficiency was obtained. It is shown that the minimum specific investment was obtained at low pressure and relatively high temperature of the main steam.
About the Authors
A. M. Kler
Melentiev Energy Systems Institute SB RAS
Russian Federation
Russian Federation
P. V. Zharkov
Melentiev Energy Systems Institute SB RAS
Russian Federation
Russian Federation
N. O. Epishkin
Melentiev Energy Systems Institute SB RAS
Russian Federation
Russian Federation
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Review
For citations:
Kler A.M., Zharkov P.V., Epishkin N.O. Optimization study of the 660 MW coal-fired power unit for elevated steam parameters. Proceedings of Irkutsk State Technical University. 2019;23(1):107-114. (In Russ.) https://doi.org/10.21285/1814-3520-2019-1-107-114
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