Article(id=1222488510754447904, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1222488501866713569, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202305073, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1684857600000, receivedDateStr=2023-05-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1769393573702, onlineDateStr=2026-01-26, pubDate=1690214400000, pubDateStr=2023-07-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769393573702, onlineIssueDateStr=2026-01-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769393573702, creator=13701087609, updateTime=1769393573702, updator=13701087609, issue=Issue{id=1222488501866713569, tenantId=1146029695717560320, journalId=1210938733613449225, year='2023', volume='52', issue='7', pageStart='1', pageEnd='199', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769393571583, creator=13701087609, updateTime=1769393973240, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1222490186634743828, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1222488501866713569, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1222490186634743829, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1222488501866713569, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=64, endPage=73, ext={EN=ArticleExt(id=1222488511060632115, articleId=1222488510754447904, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Comparison of prediction models of carbon content of fly ash based on machine learning, columnId=1222488504991474098, journalTitle=Thermal Power Generation, columnName=Intelligent management technologies for coal-fired power plants, runingTitle=null, highlight=null, articleAbstract=

The carbon content of fly ash in boilers is one of the important indicators of combustion efficiency. This study employs machine learning models to accurately predict the carbon content of fly ash. Firstly, random forest is employed to adjust the frequency of fly ash carbon content data to once per minute, aligning it with the input features to address the issue of imbalanced data collection frequency. Then, a recursive feature elimination method based on random forest is used to extract nine important features out of the original 30 features, reducing feature correlation and improving model accuracy. Subsequently, six machine learning models (linear regression, decision tree, K-nearest neighbors (KNN), random forest, Catboost and XGBoost) are compared for prediction. The results indicate that decision tree, KNN, random forest and XGBoost models perform well, MSE of which on the test are 0.010, 0.009, 0.006 and 0.006, respectively, while linear regression exhibits the poorest performance. The prediction models remain robust under low, medium, and high boiler loads.

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锅炉飞灰含碳量是衡量锅炉燃烧效率的重要指标之一,基于机器学习构建了一套能够准确预测飞灰含碳的模型。首先,借助随机森林算法解决了飞灰含碳实测值与其他输入特征频率不一致的问题;其次,采用基于随机森林的递归特征消除方法,从30个原始输入特征中提取出9个输入特征,在降低模型计算量的同时提高了预测准确度;最后,以某电厂330 MW机组锅炉实际运行数据,建立了线性回归、决策树、KNN、随机森林、Catboost、XGBoost 6个机器学习模型对飞灰含碳量进行预测。预测结果发现:决策树、KNN、随机森林和XGBoost模型预测效果较好,均方误差分别为0.010、0.009、0.006和0.006,线性回归模型表现最差;构建的预测模型在锅炉低、中、高负荷下均保持稳定。

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陈植元(1983),男,博士,副教授,博士生导师,主要研究方向为运营管理,机器学习,

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陈植元(1983),男,博士,副教授,博士生导师,主要研究方向为运营管理,机器学习,

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陈植元(1983),男,博士,副教授,博士生导师,主要研究方向为运营管理,机器学习,

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基于机器学习的飞灰含碳量预测模型比较研究
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陈植元 1 , 谭厚章 2 , 成思扬 3 , 张诗雪 1 , 熊小鹤 2 , 阮仁晖 2
热力发电 | 燃煤电站智能化管理技术 2023,52(7): 64-73
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热力发电 | 燃煤电站智能化管理技术 2023, 52(7): 64-73
基于机器学习的飞灰含碳量预测模型比较研究
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陈植元1 , 谭厚章2, 成思扬3, 张诗雪1, 熊小鹤2, 阮仁晖2
作者信息
  • 1.武汉大学经济与管理学院,湖北 武汉 430072
  • 2.西安交通大学热流科学与工程教育部重点实验室,陕西 西安 710049
  • 3.佐治亚理工学院,佐治亚州 亚特兰大 30332
  • 陈植元(1983),男,博士,副教授,博士生导师,主要研究方向为运营管理,机器学习,

Comparison of prediction models of carbon content of fly ash based on machine learning
Zhiyuan CHEN1 , Houzhang TAN2, Siyang CHENG3, Shixue ZHANG1, Xiaohe XIONG2, Renhui RUAN2
Affiliations
  • 1.School of Economics and Management, Wuhan University, Wuhan 430072, China
  • 2.MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
  • 3.Georgia Institute of Technology, Atlanta, Georgia 30332, America
出版时间: 2023-07-25 doi: 10.19666/j.rlfd.202305073
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锅炉飞灰含碳量是衡量锅炉燃烧效率的重要指标之一,基于机器学习构建了一套能够准确预测飞灰含碳的模型。首先,借助随机森林算法解决了飞灰含碳实测值与其他输入特征频率不一致的问题;其次,采用基于随机森林的递归特征消除方法,从30个原始输入特征中提取出9个输入特征,在降低模型计算量的同时提高了预测准确度;最后,以某电厂330 MW机组锅炉实际运行数据,建立了线性回归、决策树、KNN、随机森林、Catboost、XGBoost 6个机器学习模型对飞灰含碳量进行预测。预测结果发现:决策树、KNN、随机森林和XGBoost模型预测效果较好,均方误差分别为0.010、0.009、0.006和0.006,线性回归模型表现最差;构建的预测模型在锅炉低、中、高负荷下均保持稳定。

飞灰含碳量  /  随机森林  /  XGBoost  /  递归特征消除

The carbon content of fly ash in boilers is one of the important indicators of combustion efficiency. This study employs machine learning models to accurately predict the carbon content of fly ash. Firstly, random forest is employed to adjust the frequency of fly ash carbon content data to once per minute, aligning it with the input features to address the issue of imbalanced data collection frequency. Then, a recursive feature elimination method based on random forest is used to extract nine important features out of the original 30 features, reducing feature correlation and improving model accuracy. Subsequently, six machine learning models (linear regression, decision tree, K-nearest neighbors (KNN), random forest, Catboost and XGBoost) are compared for prediction. The results indicate that decision tree, KNN, random forest and XGBoost models perform well, MSE of which on the test are 0.010, 0.009, 0.006 and 0.006, respectively, while linear regression exhibits the poorest performance. The prediction models remain robust under low, medium, and high boiler loads.

carbon content of fly ash  /  random forest  /  XGBoost  /  recursive feature elimination
陈植元, 谭厚章, 成思扬, 张诗雪, 熊小鹤, 阮仁晖. 基于机器学习的飞灰含碳量预测模型比较研究. 热力发电, 2023 , 52 (7) : 64 -73 . DOI: 10.19666/j.rlfd.202305073
Zhiyuan CHEN, Houzhang TAN, Siyang CHENG, Shixue ZHANG, Xiaohe XIONG, Renhui RUAN. Comparison of prediction models of carbon content of fly ash based on machine learning[J]. Thermal Power Generation, 2023 , 52 (7) : 64 -73 . DOI: 10.19666/j.rlfd.202305073
  • 国家自然科学基金项目(71871166)
2023年第52卷第7期
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doi: 10.19666/j.rlfd.202305073
  • 接收时间:2023-05-24
  • 首发时间:2026-01-26
  • 出版时间:2023-07-25
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  • 收稿日期:2023-05-24
基金
National Natural Science Foundation of China(71871166)
国家自然科学基金项目(71871166)
作者信息
    1.武汉大学经济与管理学院,湖北 武汉 430072
    2.西安交通大学热流科学与工程教育部重点实验室,陕西 西安 710049
    3.佐治亚理工学院,佐治亚州 亚特兰大 30332
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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