Article(id=1203281641063035100, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1203281635908231645, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2025.06.015, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1716220800000, receivedDateStr=2024-05-21, revisedDate=1718726400000, revisedDateStr=2024-06-19, acceptedDate=null, acceptedDateStr=null, onlineDate=1764814299120, onlineDateStr=2025-12-04, pubDate=1750348800000, pubDateStr=2025-06-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764814299120, onlineIssueDateStr=2025-12-04, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764814299120, creator=13701087609, updateTime=1764814299120, updator=13701087609, issue=Issue{id=1203281635908231645, tenantId=1146029695717560320, journalId=1149653034449285133, year='2025', volume='58', issue='6', pageStart='1', pageEnd='148', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=0, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764814297892, creator=13701087609, updateTime=1764815002353, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1203284590690545746, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1203281635908231645, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1203284590694740051, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1203281635908231645, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=122, endPage=130, ext={EN=ArticleExt(id=1203281641369219293, articleId=1203281641063035100, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Multi-scale fusion prediction method of dissolved gas in power transformer oil considering spatio-temporal coupling relationship, columnId=1190369198472794288, journalTitle=Insulating Materials, columnName=Insulation Technology, runingTitle=null, highlight=
Multi-scale mining of the spatio-temporal coupling relationship of dissolved gases in oil is helpful to improve the prediction accuracy of dissolved gases in oil and provide a reliable theoretical basis for transformer operation and maintenance decisions. Thereby, a multi-scale fusion prediction method for dissolved gases in transformer oil considering spatio-temporal coupling information was proposed in this study. Firstly, the Res2Net was used to extract the multi-scale time characteristics of the dissolved gas data in oil, and the periodic time feature information of the characteristic gas under different frequencies was captured. Secondly, the implicit relationship between characteristic gases was captured by calculating mutual information, the correlation between different gases was described in the form of topological graphs, and the spatial information features were extracted by using graph convolutional neural network (GCN). Finally, multi-scale temporal information and spatial information were fused and spliced, and temporal convolution network (TCN) was used to predict the dissolved gas in oil. The proposed method was validated using online oil chromatography monitoring data from a 500 kV transformer. The results show that compared with the traditional prediction method, the Res2Net-GCN-TCN model can effectively improve the prediction accuracy of dissolved gas content in oil, and the average prediction accuracy is 98.68%.
, articleAbstract=
Multi-scale mining of the spatio-temporal coupling relationship of dissolved gases in oil is helpful to improve the prediction accuracy of dissolved gases in oil and provide a reliable theoretical basis for transformer operation and maintenance decisions. Thereby, a multi-scale fusion prediction method for dissolved gases in transformer oil considering spatio-temporal coupling information was proposed in this study. Firstly, the Res2Net was used to extract the multi-scale time characteristics of the dissolved gas data in oil, and the periodic time feature information of the characteristic gas under different frequencies was captured. Secondly, the implicit relationship between characteristic gases was captured by calculating mutual information, the correlation between different gases was described in the form of topological graphs, and the spatial information features were extracted by using graph convolutional neural network (GCN). Finally, multi-scale temporal information and spatial information were fused and spliced, and temporal convolution network (TCN) was used to predict the dissolved gas in oil. The proposed method was validated using online oil chromatography monitoring data from a 500 kV transformer. The results show that compared with the traditional prediction method, the Res2Net-GCN-TCN model can effectively improve the prediction accuracy of dissolved gas content in oil, and the average prediction accuracy is 98.68%.
, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Qianqian ZHANG, Min LI, Shaosheng GENG, Chunxin WANG, Jun XIE, Qing XIE), CN=ArticleExt(id=1203281648721834437, articleId=1203281641063035100, tenantId=1146029695717560320, journalId=1149653034449285133, language=CN, title=考虑时空耦合关系的电力变压器油中溶解气体多尺度融合预测方法, columnId=1190369198724452531, journalTitle=绝缘材料, columnName=绝缘技术, runingTitle=null, highlight=
对油中溶解气体的时空耦合关系进行多尺度挖掘,有助于提高油中溶解气体预测精度,为变压器运维决策提供可靠理论依据。为此,提出一种考虑时空耦合信息的变压器油中溶解气体多尺度融合预测方法。首先,利用Res2Net对油中溶解气体数据进行多尺度时间特征提取,捕捉特征气体不同频率的周期性时间特征信息。其次,通过计算互信息捕捉特征气体间隐性关系,以拓扑关系图的形式描述不同气体间关联性,并使用图卷积神经网络(GCN)提取空间信息特征。最后,将多尺度时间信息与空间信息进行融合拼接,采用时间卷积网路(TCN)对油中溶解气体进行预测,并使用某500 kV变压器油色谱在线监测数据对所提方法进行验证。结果表明:相比于传统预测方法,Res2Net-GCN-TCN模型可有效提高油中溶解气体含量预测精度,平均预测精度可达98.68%。
, articleAbstract=
对油中溶解气体的时空耦合关系进行多尺度挖掘,有助于提高油中溶解气体预测精度,为变压器运维决策提供可靠理论依据。为此,提出一种考虑时空耦合信息的变压器油中溶解气体多尺度融合预测方法。首先,利用Res2Net对油中溶解气体数据进行多尺度时间特征提取,捕捉特征气体不同频率的周期性时间特征信息。其次,通过计算互信息捕捉特征气体间隐性关系,以拓扑关系图的形式描述不同气体间关联性,并使用图卷积神经网络(GCN)提取空间信息特征。最后,将多尺度时间信息与空间信息进行融合拼接,采用时间卷积网路(TCN)对油中溶解气体进行预测,并使用某500 kV变压器油色谱在线监测数据对所提方法进行验证。结果表明:相比于传统预测方法,Res2Net-GCN-TCN模型可有效提高油中溶解气体含量预测精度,平均预测精度可达98.68%。
, correspAuthors=null, authorNote=null, correspAuthorsNote=
谢军(1988-),男(汉族),江苏江都人,副教授,博士,主要从事高电压试验技术、电力设备状态监测的研究工作。
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张倩倩(2000-),女(汉族),吉林敦化人,硕士生,主要从事变压器状态监测的研究工作;
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张倩倩(2000-),女(汉族),吉林敦化人,硕士生,主要从事变压器状态监测的研究工作;
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张倩倩(2000-),女(汉族),吉林敦化人,硕士生,主要从事变压器状态监测的研究工作;
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Comparison on the structure of bottleneck residual and Res2Net, figureFileSmall=lTqbxNHxMcMVQeROeAwefA==, figureFileBig=ZgFuP8pR07O6zfab8WSelQ==, tableContent=null), ArticleFig(id=1203362948996640802, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图1, caption=
瓶颈残差与Res2Net结构对比图(a) 瓶颈残差 (b) Res2Net
, figureFileSmall=lTqbxNHxMcMVQeROeAwefA==, figureFileBig=ZgFuP8pR07O6zfab8WSelQ==, tableContent=null), ArticleFig(id=1203362949135052840, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.2, caption=
Schematic diagram of graph convolution process, figureFileSmall=k4wWpxFlJzo2UjXok+bZ0A==, figureFileBig=XxdauMt2RmUAKtaBw1lssg==, tableContent=null), ArticleFig(id=1203362950351401007, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图2, caption=
图卷积过程示意图, figureFileSmall=k4wWpxFlJzo2UjXok+bZ0A==, figureFileBig=XxdauMt2RmUAKtaBw1lssg==, tableContent=null), ArticleFig(id=1203362950435287089, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.3, caption=
Structure diagram of multi-scale spatio-temporal coupled information network, figureFileSmall=FsIYaAXBkunTnHpi3z7soA==, figureFileBig=i/rDcDNsnRB0ywgozL2BNQ==, tableContent=null), ArticleFig(id=1203362950548533305, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图3, caption=
多尺度时空信息耦合网络结构图, figureFileSmall=FsIYaAXBkunTnHpi3z7soA==, figureFileBig=i/rDcDNsnRB0ywgozL2BNQ==, tableContent=null), ArticleFig(id=1203362950649196606, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.4, caption=
Multivariate prediction flowchart based on spatio-temporal information fusion, figureFileSmall=ydhfKPi5buHbZnt7qNWWIg==, figureFileBig=R8bQH3hqJlg40keHixiWtw==, tableContent=null), ArticleFig(id=1203362950766637124, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图4, caption=
基于时空信息融合的多元预测流程图, figureFileSmall=ydhfKPi5buHbZnt7qNWWIg==, figureFileBig=R8bQH3hqJlg40keHixiWtw==, tableContent=null), ArticleFig(id=1203362950934409293, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.5, caption=
Transformer characteristic gas detection data chart, figureFileSmall=OFMjhqfdqNdR3oHKivIvoQ==, figureFileBig=BC5yfdvbelbi1PGlj9bDcA==, tableContent=null), ArticleFig(id=1203362951072821330, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图5, caption=
变压器特征气体预测数据图, figureFileSmall=OFMjhqfdqNdR3oHKivIvoQ==, figureFileBig=BC5yfdvbelbi1PGlj9bDcA==, tableContent=null), ArticleFig(id=1203362951207039067, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.6, caption=
Comparison on loss function values of models with different convolutional scales, figureFileSmall=EGzbxwM2mRXNXkrom8PY3w==, figureFileBig=NWY7WJbCAU1U3AY/ZqNjqg==, tableContent=null), ArticleFig(id=1203362951290925149, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图6, caption=
不同卷积尺度数量的模型损失函数值对比图, figureFileSmall=EGzbxwM2mRXNXkrom8PY3w==, figureFileBig=NWY7WJbCAU1U3AY/ZqNjqg==, tableContent=null), ArticleFig(id=1203362951391588453, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.7, caption=
Mutual information between feature variables and adjacency matrix, figureFileSmall=pzoc/jrUJ2b6Sa36JEBYEg==, figureFileBig=d2K7y9PUxO34XkBVsKDoEQ==, tableContent=null), ArticleFig(id=1203362951500640363, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图7, caption=
特征变量间互信息与邻接矩阵, figureFileSmall=pzoc/jrUJ2b6Sa36JEBYEg==, figureFileBig=d2K7y9PUxO34XkBVsKDoEQ==, tableContent=null), ArticleFig(id=1203362951622275185, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.8, caption=
RMSE values corresponding to different K values, figureFileSmall=ac1jONnop5lodAKXSLHsTQ==, figureFileBig=8TEvWm+bi+GDnIWiQ4fvuA==, tableContent=null), ArticleFig(id=1203362951689384056, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图8, caption=
不同K值对应的RMSE值, figureFileSmall=ac1jONnop5lodAKXSLHsTQ==, figureFileBig=8TEvWm+bi+GDnIWiQ4fvuA==, tableContent=null), ArticleFig(id=1203362951764881535, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.9, caption=
Absolute error distribution map of GCN at different layers, figureFileSmall=NRqq4oEzG6SJFV9MsOQ37g==, figureFileBig=CsAFe80MuTDLu+Og+KVrdw==, tableContent=null), ArticleFig(id=1203362951924265093, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图9, caption=
不同层GCN绝对误差分布图, figureFileSmall=NRqq4oEzG6SJFV9MsOQ37g==, figureFileBig=CsAFe80MuTDLu+Og+KVrdw==, tableContent=null), ArticleFig(id=1203362952024928398, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.10, caption=
Prediction loss distribution map of different time windows, figureFileSmall=1lj96Rfsnxc1VHEzZ5VPBw==, figureFileBig=KQTMY67zIKWOVjIii7ABFg==, tableContent=null), ArticleFig(id=1203362952175923348, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图10, caption=
不同时间窗预测损失分布图, figureFileSmall=1lj96Rfsnxc1VHEzZ5VPBw==, figureFileBig=KQTMY67zIKWOVjIii7ABFg==, tableContent=null), ArticleFig(id=1203362952406610080, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Fig.11, caption=
Comparison on prediction performance of different spatiotemporal feature extraction models, figureFileSmall=ccIYWeLX+5KPXfEvARZErA==, figureFileBig=nPqqEpuFlg4b1pclnk2NZg==, tableContent=null), ArticleFig(id=1203362952570187948, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=CN, label=图11, caption=
不同时空特征提取模型预测效果对比图, figureFileSmall=ccIYWeLX+5KPXfEvARZErA==, figureFileBig=nPqqEpuFlg4b1pclnk2NZg==, tableContent=null), ArticleFig(id=1203362952666656946, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1203281641063035100, language=EN, label=Table 1, caption=
Comparison on the effects of different prediction methods, figureFileSmall=null, figureFileBig=null, tableContent=
| 预测模型 | RMSE/(μL/L) | R2 | I/% |
|---|
| Res2Net-GCN-TCN | 0.092 4 | 0.957 5 | 98.68 |
| SMA-VMD-GRU | 0.176 4 | 0.866 9 | 93.74 |
| LSTM | 0.472 5 | 0.635 6 | 91.17 |
| GRU | 0.456 0 | 0.651 4 | 91.33 |
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不同预测模型效果对比
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| 预测模型 | RMSE/(μL/L) | R2 | I/% |
|---|
| Res2Net-GCN-TCN | 0.092 4 | 0.957 5 | 98.68 |
| SMA-VMD-GRU | 0.176 4 | 0.866 9 | 93.74 |
| LSTM | 0.472 5 | 0.635 6 | 91.17 |
| GRU | 0.456 0 | 0.651 4 | 91.33 |
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Results of ablation experiments, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | RMSE/(μL/L) | MAPE/% | R2 | I/% |
|---|
| T | 0.257 2 | 6.81 | 0.712 5 | 93.19 |
| R-T | 0.204 6 | 5.66 | 0.828 3 | 94.34 |
| G-T | 0.164 6 | 3.75 | 0.884 9 | 96.25 |
| R-G-T | 0.128 3 | 1.46 | 0.946 2 | 98.54 |
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消融实验结果
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| 模型 | RMSE/(μL/L) | MAPE/% | R2 | I/% |
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| T | 0.257 2 | 6.81 | 0.712 5 | 93.19 |
| R-T | 0.204 6 | 5.66 | 0.828 3 | 94.34 |
| G-T | 0.164 6 | 3.75 | 0.884 9 | 96.25 |
| R-G-T | 0.128 3 | 1.46 | 0.946 2 | 98.54 |
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| 预测模型 | RMSE/(μL/L) | R2 | I/% | t/s |
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| Res2Net-GCN-TCN | 0.092 4 | 0.957 5 | 98.68 | 28 |
| Res2Net-GCN-LSTM | 0.172 0 | 0.875 5 | 93.11 | 55 |
| Res2Net-GCN-transformer | 0.163 7 | 0.859 6 | 94.03 | 112 |
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不同预测方法效果对比
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| 预测模型 | RMSE/(μL/L) | R2 | I/% | t/s |
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| Res2Net-GCN-LSTM | 0.172 0 | 0.875 5 | 93.11 | 55 |
| Res2Net-GCN-transformer | 0.163 7 | 0.859 6 | 94.03 | 112 |
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