Journal of Northeastern University:Natural Science ›› 2015, Vol. 36 ›› Issue (10): 1388-1392.DOI: 10.3969/j.issn.1005-3026.2015.10.005

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Optimization Model of Steam Coal Blending in Coal-Fired Power Plant

ZHAO Jian, LIU Shi-xin   

  1. School of Information Science & Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2014-09-09 Revised:2014-09-09 Online:2015-10-15 Published:2015-09-29
  • Contact: ZHAO Jian
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Abstract: According to the blending scheme and the relation between single coal and blended coal used in the factory, 0-1 mixed integer variables were introduced to limit the number of single coals in blend, and a resource-constrained 0-1 mixed integer programming model based on the minimum blending cost as the objective was established. By combining technical transformation and equipment upgrading and permitting the coal’s quality indicators in blend overflow the given boundary values, the corresponding penalty functions were added in objective functions, and the model was revised to obtain a lower unit price of the standard coal. The solution solved by CPLEX is reasonable that the unit price of the standard coal declines 3.6%, but the change of the coal’s quality indicators in blend is no more than 0.4%.

Key words: steam coal blending, mixed integer programming, coal’s quality indicator, blending cost, penalty function

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