[1]马欢,司风琪,李岚,等.间接空冷系统变工况快速计算模型[J].东南大学学报(自然科学版),2015,45(1):79-84.[doi:10.3969/j.issn.1001-0505.2015.01.015]
 Ma Huan,Si Fengqi,Li Lan,et al.Fast calculation model of indirect air-cooled system under off-design condition[J].Journal of Southeast University (Natural Science Edition),2015,45(1):79-84.[doi:10.3969/j.issn.1001-0505.2015.01.015]
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间接空冷系统变工况快速计算模型()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第1期
页码:
79-84
栏目:
能源与动力工程
出版日期:
2015-01-20

文章信息/Info

Title:
Fast calculation model of indirect air-cooled system under off-design condition
作者:
马欢1司风琪1李岚1祝康平2阎文生2
1东南大学能源热转换及其过程测控教育部重点实验室, 南京 210096; 2中电神头发电有限责任公司, 朔州 036800
Author(s):
Ma Huan1 Si Fengqi1 Li Lan1 Zhu Kangping2 Yan Wensheng2
1Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
2China Power Shentou Power Generating Co., Ltd., Shuozhou 036800, China
关键词:
间接空冷系统 变工况 数值模拟 最小二乘支持向量机 背压
Keywords:
indirect air-cooled system off-design condition numerical simulation least square support vector machine back pressure
分类号:
TK264
DOI:
10.3969/j.issn.1001-0505.2015.01.015
摘要:
以某600MW机组大型间接空冷系统为对象,分别建立了凝汽器热力计算模型与空冷塔数值计算模型,按照正交实验方法设计了49组工况,通过耦合迭代的方法对机组变工况运行进行了数值模拟,得到了相应的变工况运行特性信息.以所得数值模拟结果为样本,基于最小二乘支持向量机,建立了反映机组变工况运行特性的背压快速计算模型,在机组运行的全工况范围内反映了环境温度、侧风风速和热负荷变化对机组背压的影响.该方法结合了数值模拟方法机理建模的准确性和最小二乘支持向量机良好的泛化能力,计算高效,可为机组经济与安全运行提供连续定量的指导.
Abstract:
Taking a 600MW indirect air-cooled unit as an example, thermal calculation model of the condenser and numerical calculation model of air-cooled tower are established, respectively. In order to obtain operating characteristics of the indirect air-cooled system under off-design condition, 49 numerical simulations were carried out with the coupled method according to orthogonal experimental design. Based on least square support vector machine, a fast calculation model for back pressure which reflects operating characteristics of the unit is established based on the results of numerical computation. By this model, the effects of ambient temperature, crosswind speed and thermal load on back pressure of the unit are obtained under all working conditions. Combining the accuracy of numerical simulation based on mechanism and excellent generalization of least square support vector machine, this model has fast calculation speed and provides a continuous and quantitative guidance for the economic and safe operation of the unit.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-07-24.
作者简介: 马欢(1991—),男,博士生;司风琪(联系人),男,博士,教授,博士生导师,fqsi@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51176030)、中电国际科技计划资助项目(2013-006-ZDG-KJ-X).
引用本文: 马欢,司风琪,李岚,等.间接空冷系统变工况快速计算模型[J].东南大学学报:自然科学版,2015,45(1):79-84. [doi:10.3969/j.issn.1001-0505.2015.01.015]
更新日期/Last Update: 2015-01-20