Article(id=1223190874461426173, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223190866320278179, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20222030, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1664294400000, receivedDateStr=2022-09-28, revisedDate=1668700800000, revisedDateStr=2022-11-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1769561030258, onlineDateStr=2026-01-28, pubDate=1695571200000, pubDateStr=2023-09-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769561030258, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769561030258, creator=13701087609, updateTime=1769561030258, updator=13701087609, issue=Issue{id=1223190866320278179, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='9', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769561028318, creator=13701087609, updateTime=1769562015483, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223195006870082478, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223190866320278179, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223195006870082479, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223190866320278179, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=211, endPage=215, ext={EN=ArticleExt(id=1223190878160802495, articleId=1223190874461426173, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Power Data Identification Method Based on Multi-Domain Feature Analysis and Selection, columnId=1222940986234364233, journalTitle=Water Resources and Power, columnName=ELECTRICAL ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

To solve the problem of low recognition accuracy caused by insufficient power data feature mining, this paper proposed a novel power data identification method based on multi-domain feature analysis and feature selection. Firstly, aiming at the shortcomings of existing power data feature extraction methods, a feature extraction method based on empirical mode decomposition (EMD) and Hilbert transform (EMD-Hilbert) was proposed, and the power features and V-I trajectory features of power data were quantified. Secondly, based on random forest and generalized sequence backward selection search strategy, the optimal feature subset was obtained. The random forest was employed to build a recognition model for the power data. Finally, the experimental results verified the effectiveness and identification accuracy of the proposed method. The results show that the proposed method can utilize the complementarity of different features to overcome the problem of low accuracy by single feature, and further improve the model recognition performance through feature selection.

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为解决电力数据特征挖掘不充分导致识别精度不高的问题,提出一种基于多域特征分析与选择的电力数据识别方法。首先针对现有电力数据特征提取方法存在的不足,提出一种基于经验模态分解(EMD)与Hilbert变换(EMD-Hilbert)的特征提取方法,并对电力数据的功率特征和V-I轨迹特征进行量化表征;然后基于随机森林与广义序列后向选择搜索策略相结合的特征选择算法(RF-GSBS)得到最优特征子集,并采用RF算法构建电力数据的识别模型;最后通过仿真算例验证所提方法的有效性和准确性。结果表明,该算法可利用不同特征互补性解决单一特征识别精度不高的问题,并通过特征选择进一步提高学习算法的性能。

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洪德华(1993-),女,硕士、工程师,研究方向为数据资产管理、数据可视化,E-mail:

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洪德华(1993-),女,硕士、工程师,研究方向为数据资产管理、数据可视化,E-mail:

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洪德华(1993-),女,硕士、工程师,研究方向为数据资产管理、数据可视化,E-mail:

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基于多域特征分析与选择的电力数据识别方法
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洪德华 1 , 刘翠玲 1 , 赵林燕 1 , 雷沁怡 1 , 王海鑫 2
水电能源科学 | 电气工程 2023,41(9): 211-215
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水电能源科学 | 电气工程 2023, 41(9): 211-215
基于多域特征分析与选择的电力数据识别方法
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洪德华1 , 刘翠玲1, 赵林燕1, 雷沁怡1, 王海鑫2
作者信息
  • 1.国网安徽省电力有限公司信息通信分公司,安徽 合肥 230061
  • 2.沈阳工业大学电气工程学院,辽宁 沈阳 110870
  • 洪德华(1993-),女,硕士、工程师,研究方向为数据资产管理、数据可视化,E-mail:

Power Data Identification Method Based on Multi-Domain Feature Analysis and Selection
De-hua HONG1 , Cui-ling LIU1, Lin-yan ZHAO1, Qin-yi LEI1, Hai-xin WANG2
Affiliations
  • 1.Information and Communication Branch of State Grid Anhui Electric Power Co., Ltd., Hefei 230061, China
  • 2.School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China
出版时间: 2023-09-25 doi: 10.20040/j.cnki.1000-7709.2023.20222030
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为解决电力数据特征挖掘不充分导致识别精度不高的问题,提出一种基于多域特征分析与选择的电力数据识别方法。首先针对现有电力数据特征提取方法存在的不足,提出一种基于经验模态分解(EMD)与Hilbert变换(EMD-Hilbert)的特征提取方法,并对电力数据的功率特征和V-I轨迹特征进行量化表征;然后基于随机森林与广义序列后向选择搜索策略相结合的特征选择算法(RF-GSBS)得到最优特征子集,并采用RF算法构建电力数据的识别模型;最后通过仿真算例验证所提方法的有效性和准确性。结果表明,该算法可利用不同特征互补性解决单一特征识别精度不高的问题,并通过特征选择进一步提高学习算法的性能。

电力数据识别  /  多域特征提取  /  特征选择  /  随机森林  /  序列后向选择

To solve the problem of low recognition accuracy caused by insufficient power data feature mining, this paper proposed a novel power data identification method based on multi-domain feature analysis and feature selection. Firstly, aiming at the shortcomings of existing power data feature extraction methods, a feature extraction method based on empirical mode decomposition (EMD) and Hilbert transform (EMD-Hilbert) was proposed, and the power features and V-I trajectory features of power data were quantified. Secondly, based on random forest and generalized sequence backward selection search strategy, the optimal feature subset was obtained. The random forest was employed to build a recognition model for the power data. Finally, the experimental results verified the effectiveness and identification accuracy of the proposed method. The results show that the proposed method can utilize the complementarity of different features to overcome the problem of low accuracy by single feature, and further improve the model recognition performance through feature selection.

power data identification  /  multi-domain feature extraction  /  feature selection  /  random forest  /  generalized sequence backward selection
洪德华, 刘翠玲, 赵林燕, 雷沁怡, 王海鑫. 基于多域特征分析与选择的电力数据识别方法. 水电能源科学, 2023 , 41 (9) : 211 -215 . DOI: 10.20040/j.cnki.1000-7709.2023.20222030
De-hua HONG, Cui-ling LIU, Lin-yan ZHAO, Qin-yi LEI, Hai-xin WANG. Power Data Identification Method Based on Multi-Domain Feature Analysis and Selection[J]. Water Resources and Power, 2023 , 41 (9) : 211 -215 . DOI: 10.20040/j.cnki.1000-7709.2023.20222030
  • 国网安徽省电力有限公司科技项目(521207220002)
2023年第41卷第9期
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doi: 10.20040/j.cnki.1000-7709.2023.20222030
  • 接收时间:2022-09-28
  • 首发时间:2026-01-28
  • 出版时间:2023-09-25
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  • 收稿日期:2022-09-28
  • 修回日期:2022-11-18
基金
国网安徽省电力有限公司科技项目(521207220002)
作者信息
    1.国网安徽省电力有限公司信息通信分公司,安徽 合肥 230061
    2.沈阳工业大学电气工程学院,辽宁 沈阳 110870
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2种不同金属材料的力学参数

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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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