中文摘要：

考虑不同碳减排目标，建立了蒸汽动力系统多周期优化操作模型，该模型引入了燃料替换和碳捕捉两种碳减排方式，采用列队竞争算法和动态规划法分步求解方法对该模型进行了求解，得到了不同碳减排目标下，蒸汽动力系统满足热电负荷需求的总成本最少的操作方案。当碳减排目标值较小时，减排的主要措施是采用低碳的天然气代替燃料油，随着碳减排目标值的增加，当所有锅炉的燃料替换为天然气仍不能达到碳减排目标时，锅炉将采用碳捕捉方式。总成本随着碳减排目标值的增加而增加，而且碳减排目标值越大，总费用增加的越快。本文的研究可为不同碳减排目标下蒸汽动力系统多周期优化操作提供参考依据。

英文摘要：

Considering different carbon reduction targets, a multi-period optimal operation model of steam power system is established, to introduce two kinds of carbon reduction methods including fuel substitution and carbon capture. The model is solved with the sub-section method which uses line-up competition algorithm coupled with dynamic programming approach, minimizing the cost of operational planning of steam power system while meeting the demand of steam and power under different carbon reduction targets. When the carbon reduction target is low, the measures to reduce arbon mitigation is the substitution of fuel oil with nature gas. With the increasing of carbon reduce target, the boilers will use carbon capture when all of the boilers are replaced by nature gas without achieving the reduce target. The total cost increases as the carbon reduction target increases, In the same way, the greater the carbon reduction becomes, the faster the total cost increases. The research could provide a basis for decision making of multi-period operating optimization model of steam power system under different carbon reduction targets.