Thermoeconomic operation optimization of a coal-fired power plant
Thermoeconomic operation optimization of a coal-fired power plant
复制标题
燃煤电厂热经济运行优化
DOI：
10.1016/j.energy.2012.03.020
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发表时间：
2012-06
期刊：
影响因子：
9
通讯作者：
Peter B. Luh
中科院分区：
文献类型：
--
作者：
Jie Xiong;Haibo Zhao*;Chao Zhang;Chuguang Zheng;Peter B. Luh
热经济学模型结合了经济学领域中的成本概念和热力学领域中的(火用)概念，为优化复杂的发电系统提供了可能，以实现热力效率与经济成本(包括投资成本和运行成本)之间的最佳平衡。基于热经济学的结构理论，首次对位于湖南益阳(中国)的一座300兆瓦燃煤电厂进行了运行优化。在电厂上先后实现了全局优化和局部优化两种优化策略。这两种策略的目的都是将工厂的年总成本降至最低，年总成本降低2.5%，总投资成本降低3.5%。此外，经过优化处理的几乎所有装置的产品成本都有明显下降。值得注意的是，本文提出的局部优化与全局优化的性能几乎相同，但速度更快。此外，还给出了最优运行参数对外部环境参数的灵敏度和目标函数(年总成本)对决策变量(如设备效率)的灵敏度。
Thermoeconomic models, which combine the concept of cost in the field of economics and the concept of exergy in the field of thermodynamics, provide a possibility of optimizing complex energy-generating systems to achieve a best balance between thermodynamic efficiency and economic cost (including investment cost and operation cost). For the first time, operation optimization on a 300 MW coal-fired power plant located in Yiyang (Hunan Province, China) is accomplished based on the structure theory of thermoeconomic. Two optimization strategies, global optimization and local optimization, are successively realized on the power plant. Both strategies aim to minimize the total annual cost of the plant, and a 2.5% reduction in the total annual cost and a 3.5% reduction in the total investment cost are achieved. In addition, the costs of products of almost all units after optimization processes decrease obviously. It is worth noting that local optimization proposed in this paper attains almost the same performance as global optimization but with faster speed. Furthermore, sensitivities of optimal operation parameters with respect to external environmental parameters and the sensitivity of the objective function (the total annual cost) with respect to decision variables (e.g., the equipment efficiency) are presented.
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DOI：
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发表时间：
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期刊：
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影响因子：
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影响因子：
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发表时间：
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Advanced Energy Systems
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DOI：
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发表时间：
2003-03
期刊：
International Journal of Refrigeration-revue Internationale Du Froid
影响因子：
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