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中国电机工程学报 2007, 27(26) 65-71 DOI:
ISSN: 0258-8013 CN: 11-2107/TM |
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基于热经济学结构理论的电站热力系统全局优化 |
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熊杰 张超 赵海波 郑楚光 |
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华中科技大学煤燃烧国家重点实验室 华中科技大学煤燃烧国家重点实验室 华中科技大学煤燃烧国家重点实验室 华中科技大学煤燃烧国家重点实验室 |
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摘要：
以某燃煤电厂300MW燃煤机组为例，利用热经济学结构理论建立了系统的热经济学成本模型和全局优化模型，并以序列二次规划法(SQP)作为优化模型的求解算法，通过权衡系统的热力学效率以及系统各设备的投资成本，获得了系统的最优解，经过热经济学优化之后系统总投资成本降低了4个百分点。利用系统灵敏度的分析方法，研究了外部环境参数及系统自变量变化对系统最优解的影响。通过分析发现，外部经济性参数相比较于物理参数对系统目标函数和最优解的影响更大；由系统自变量在最优解附近的灵敏度分析可以看出，文中所获得的最优解能够确保系统具有全局最小的年度化总成本。 |
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关键词：
热经济学
结构理论
热力系统
火用成本
序列二次规划法
全局优化
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Global Optimization of Thermal Power System Based on Structure Theory of Thermoeconomics |
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Abstract:
Based on the structure theory of thermoeco- nomics, the thermoeconomic cost model and the global optimization model were established to globally optimize a 300MW pulverized coal fired power plant. The Sequential Quadratic Programming (SQP) mathematical arithmetic was used to solve the optimization models of complex energy systems, in which the global optimal solutions was obtained by balancing the thermal efficiency of system and the investment cost of each device. The results show that the thermoeconomic optimization will decrease 4 percent of the total investment cost of the energy system. And, the effect of the variation of the external environment parameters and the independent variables of system on the optimal solutions of the system was evaluated by using the "sensitivity analysis methodology". The results indicate that the external economic parameters influence the objective function and the optimal solutions more effectively than the external thermal parameters. And then, the results of the sensitivity analysis of the independent variables near the optimal solutions show that the optimal solutions obtained insure the energy system exhibits the globally minimum total annual cost. |
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Keywords:
thermoeconomics
structure theory
thermal power system
exergetic cost
sequential quadratic programming
global optimization
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收稿日期 2006-10-25 修回日期 1900-01-01 网络版发布日期 |
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DOI: |
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基金项目:
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通讯作者: 熊杰 |
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作者简介: |
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作者Email: xiongjiebbz@21cn.com |
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| 本刊中的类似文章 |
| 1．崔映红 陈娟 杨阳 杨勇平.太阳能辅助燃煤热发电系统性能研究[J]. 中国电机工程学报, 2009,29(23): 92-98 |
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| Copyright by 中国电机工程学报 |
