Article(id=1205158462083801535, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1205158458619306387, articleNumber=null, orderNo=null, doi=10.19457/j.1001-2095.dqcd25035, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1678982400000, receivedDateStr=2023-03-17, revisedDate=1680105600000, revisedDateStr=2023-03-30, acceptedDate=null, acceptedDateStr=null, onlineDate=1765261768121, onlineDateStr=2025-12-09, pubDate=1721404800000, pubDateStr=2024-07-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1765261768121, onlineIssueDateStr=2025-12-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1765261768121, creator=13701087609, updateTime=1765261768121, updator=13701087609, issue=Issue{id=1205158458619306387, tenantId=1146029695717560320, journalId=1189987059142926344, year='2024', volume='54', issue='7', pageStart='3', pageEnd='96', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1765261767296, creator=13701087609, updateTime=1765261938922, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1205159178575782323, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1205158458619306387, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1205159178575782324, tenantId=1146029695717560320, journalId=1189987059142926344, issueId=1205158458619306387, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=79, endPage=85, ext={EN=ArticleExt(id=1205158462398374345, articleId=1205158462083801535, tenantId=1146029695717560320, journalId=1189987059142926344, language=EN, title=Ensemble Learning Framework and Knowledge Distillation Technology and Its Application in Transformer Fault Identification, columnId=null, journalTitle=Electric Drive, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Accurately and quickly identifying the fault types of traction transformers is a key technology for intelligent operation and maintenance. Aiming at the problems of single model deviation in the current traditional algorithm and the constraints between the iteration rate of complex models and the deployment of computing resources,a traction transformer fault diagnosis model based on the Stacking ensemble learning framework was proposed,and incorporated knowledge distillation technology to compress model iteration time to improve the computational performance of the model. First,an evaluation feature vector composed of gas indicators in transformer oil was constructed,and then the single Bagging and Boosting framework algorithm were combined based on the Stacking integrated learning framework,and knowledge distillation technology was incorporated to realize the effective mapping of feature vectors and fault types. The actual generalization effect in the DGA data sample shows that this method solves the problem of bias and variance in the traditional integrated model,accelerates the iteration speed of the integrated model,and proves the engineering application value of the model.
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准确并快速地识别牵引变压器的故障类型是智能化运维的关键技术。针对目前传统算法中存在单一模型偏差以及复杂模型的迭代速率与部署计算资源之间的约束等问题,提出了一种基于Stacking集成学习框架的牵引变压器故障诊断模型,并融入知识蒸馏技术以压缩模型迭代时间来提高模型的计算性能。首先构造了由变压器油中气体指标组成的评估特征向量,然后基于Stacking集成学习框架将单一的Bagging与Boosting框架算法组合起来,并融入知识蒸馏技术实现对特征向量与故障类型的有效映射。在DGA数据样本中的实际泛化效果表明该方法解决了传统集成模型存在的偏差与方差问题,加快了集成模型的迭代速度,证明了模型的工程应用价值。
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2020:12396-12405., articleTitle=Distilling cross-task knowledge via relationship matching, refAbstract=null)], funds=[Fund(id=1205208446489568088, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, awardId=2022M721184, language=CN, fundingSource=中国博士后科学基金(2022M721184), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1205208439992591006, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, xref=null, ext=[AuthorCompanyExt(id=1205208440000979614, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, companyId=1205208439992591006, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Electric Power,South China University of Technology,Guangzhou 510641,Guangdong,China), AuthorCompanyExt(id=1205208440009368223, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, companyId=1205208439992591006, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=华南理工大学 电力学院,广东 广州 510641)])], figs=[ArticleFig(id=1205208443029267197, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Fig.1, caption=
Bagging ensemble learning framework, figureFileSmall=xEIS2u3QlInAVk9gSFYPAw==, figureFileBig=K6AQrvLufL27VTEHa1AGlw==, tableContent=null), ArticleFig(id=1205208443121541888, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=图1, caption=
Bagging集成学习框架, figureFileSmall=xEIS2u3QlInAVk9gSFYPAw==, figureFileBig=K6AQrvLufL27VTEHa1AGlw==, tableContent=null), ArticleFig(id=1205208443226399495, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Fig.2, caption=
Boosting ensemble learning framework, figureFileSmall=ZKlovNqiMKFv5jy0lDyoQg==, figureFileBig=xvx+iCrZWVAduzpNmmuYcg==, tableContent=null), ArticleFig(id=1205208443322868490, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=图2, caption=
Boosting集成学习框架, figureFileSmall=ZKlovNqiMKFv5jy0lDyoQg==, figureFileBig=xvx+iCrZWVAduzpNmmuYcg==, tableContent=null), ArticleFig(id=1205208443457086224, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Fig.3, caption=
Stacking-KD model, figureFileSmall=em8RxdCZsZDzVi17AM46yA==, figureFileBig=FQshktoJHPq6kTyBUw/sGg==, tableContent=null), ArticleFig(id=1205208443545166613, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=图3, caption=
Stacking-KD模型, figureFileSmall=em8RxdCZsZDzVi17AM46yA==, figureFileBig=FQshktoJHPq6kTyBUw/sGg==, tableContent=null), ArticleFig(id=1205208443616469785, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Fig.4, caption=
Transformer fault identification algorithm, figureFileSmall=wKw98ExF3Myo+uRcHAS0EQ==, figureFileBig=YAQZmVetPl19iK+r4PpaIQ==, tableContent=null), ArticleFig(id=1205208443708744475, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=图4, caption=
变压器故障识别算法, figureFileSmall=wKw98ExF3Myo+uRcHAS0EQ==, figureFileBig=YAQZmVetPl19iK+r4PpaIQ==, tableContent=null), ArticleFig(id=1205208443805213469, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Fig.5, caption=
Accuracy comparison between training set and test set, figureFileSmall=8D3CbhxeQCYggARC5/USUA==, figureFileBig=ujAllLgiw1BYktYWSePVQw==, tableContent=null), ArticleFig(id=1205208443905876769, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=图5, caption=
训练集和测试集的准确率对比, figureFileSmall=8D3CbhxeQCYggARC5/USUA==, figureFileBig=ujAllLgiw1BYktYWSePVQw==, tableContent=null), ArticleFig(id=1205208443972985635, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Fig.6, caption=
Comparison of the accuracy of fault types in the training set, figureFileSmall=TvBa3otjN6jAxa8gP6V6xA==, figureFileBig=+jO124uuwQoolptneP2tgA==, tableContent=null), ArticleFig(id=1205208444052677414, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=图6, caption=
训练集中故障类型准确率比较, figureFileSmall=TvBa3otjN6jAxa8gP6V6xA==, figureFileBig=+jO124uuwQoolptneP2tgA==, tableContent=null), ArticleFig(id=1205208444128174889, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Fig.7, caption=
Comparison of the accuracy of fault types in the test set, figureFileSmall=EJiGTSrAGCAMb9hq0Eab/A==, figureFileBig=MGE6weKuj8qWr4jo6xkzqA==, tableContent=null), ArticleFig(id=1205208444203672363, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=图7, caption=
测试集中故障类型准确率比较, figureFileSmall=EJiGTSrAGCAMb9hq0Eab/A==, figureFileBig=MGE6weKuj8qWr4jo6xkzqA==, tableContent=null), ArticleFig(id=1205208444270781230, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Tab.1, caption=
Comparison of Bagging and Boosting frameworks
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法名称 | 训练方式 | 基学习器 | 相关性误差类型 |
| Bagging | 并行集成 | 强预测模型 | 弱相关性减小方差 |
| Boosting | 串行集成 | 弱预测模型 | 强相关性减小偏差 |
), ArticleFig(id=1205208444342084402, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=表1, caption=
Bagging与Boosting框架的对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法名称 | 训练方式 | 基学习器 | 相关性误差类型 |
| Bagging | 并行集成 | 强预测模型 | 弱相关性减小方差 |
| Boosting | 串行集成 | 弱预测模型 | 强相关性减小偏差 |
), ArticleFig(id=1205208444417581878, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Tab.2, caption=
Stacking ensemble learning training process pseudocode
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| Input:数据集 ; |
| Step1:划分数据集为 ,并设 ; |
Step2:训练第1层的基学习器; For 1 to K:基于 训练第一层的基学习器 ;End |
Step3:构建新的数据集: |
| Step4:基于 对第2层元学习器模型进行 的训练 |
), ArticleFig(id=1205208444480496439, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=表2, caption=
Stacking集成学习训练流程伪代码
, figureFileSmall=null, figureFileBig=null, tableContent=
| Input:数据集 ; |
| Step1:划分数据集为 ,并设 ; |
Step2:训练第1层的基学习器; For 1 to K:基于 训练第一层的基学习器 ;End |
Step3:构建新的数据集: |
| Step4:基于 对第2层元学习器模型进行 的训练 |
), ArticleFig(id=1205208444547605307, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Tab.3, caption=
DGA data samples and their distribution
, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障类型 | 溶解气体浓度/ | 样本数量 |
| H2 | CH4 | C2H6 | C2H4 | C2H2 |
| HD | 217.5 | 40 | 4.9 | 51.8 | 67.5 | 125 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| LD | 345 | 112.25 | 27.5 | 51.5 | 58.75 | 304 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| HT | 172.9 | 334.1 | 172.9 | 812.5 | 37.7 | 328 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| LT | 181 | 262 | 210 | 528 | 0 | 199 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| NS | 7.5 | 5.7 | 3.4 | 2.6 | 3.2 | 44 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
), ArticleFig(id=1205208444631491391, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=表3, caption=
变压器DGA数据样本及其分布
, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障类型 | 溶解气体浓度/ | 样本数量 |
| H2 | CH4 | C2H6 | C2H4 | C2H2 |
| HD | 217.5 | 40 | 4.9 | 51.8 | 67.5 | 125 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| LD | 345 | 112.25 | 27.5 | 51.5 | 58.75 | 304 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| HT | 172.9 | 334.1 | 172.9 | 812.5 | 37.7 | 328 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| LT | 181 | 262 | 210 | 528 | 0 | 199 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
| NS | 7.5 | 5.7 | 3.4 | 2.6 | 3.2 | 44 |
| ⋮ | ⋮ | ⋮ | ⋮ | ⋮ |
), ArticleFig(id=1205208444698600259, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Tab.4, caption=
Comparison algorithm model parameter setting
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| 算法 | 参数设定 |
| Three-Ratio | 具体参考IEC三比值法的编码规则 |
| SVM | 正则化参数C∶1.0;核函数:RBF函数;Gamma∶1/8 |
| RF | 决策树数量60;最大深度5 |
), ArticleFig(id=1205208444816040773, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=表4, caption=
对比算法模型参数设定
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法 | 参数设定 |
| Three-Ratio | 具体参考IEC三比值法的编码规则 |
| SVM | 正则化参数C∶1.0;核函数:RBF函数;Gamma∶1/8 |
| RF | 决策树数量60;最大深度5 |
), ArticleFig(id=1205208444916704071, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Tab.5, caption=
Accuracy comparison between training set and test set
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| 算法类型 | 准确率/% |
| 训练集 | 测试集 | 整体 |
| Stacking | 98.87 | 80.59 | 95.21 |
| RF | 86.14 | 77.61 | 84.43 |
| SVM | 59.55 | 64.17 | 60.47 |
| Three Ratio | 67.41 | 68.65 | 67.66 |
| Stacking-KD | 98.28 | 73.26 | 93.26 |
), ArticleFig(id=1205208444983812939, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=表5, caption=
训练集和测试集的准确率对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法类型 | 准确率/% |
| 训练集 | 测试集 | 整体 |
| Stacking | 98.87 | 80.59 | 95.21 |
| RF | 86.14 | 77.61 | 84.43 |
| SVM | 59.55 | 64.17 | 60.47 |
| Three Ratio | 67.41 | 68.65 | 67.66 |
| Stacking-KD | 98.28 | 73.26 | 93.26 |
), ArticleFig(id=1205208445101253454, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=EN, label=Tab.6, caption=
Computational performance comparison of different algorithms
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法类型 | 训练时间/(s·epoch-1) | 测试时间/(s·epoch-1) | 计算量/FlOPs | 准确率/% |
| Stacking | 0.48 | 0.16 | 45 308 | 95.21 |
| RF | 0.032 | 0.021 | 2 265 | 84.43 |
| SVM | 0.032 | 0.021 | - | 60.47 |
| Three Ratio | 0.022 | 0.005 | - | 67.66 |
| Stacking-KD | 0.22 | 0.010 | 2 265 | 93.26 |
), ArticleFig(id=1205208446279852881, tenantId=1146029695717560320, journalId=1189987059142926344, articleId=1205158462083801535, language=CN, label=表6, caption=
不同算法计算性能对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法类型 | 训练时间/(s·epoch-1) | 测试时间/(s·epoch-1) | 计算量/FlOPs | 准确率/% |
| Stacking | 0.48 | 0.16 | 45 308 | 95.21 |
| RF | 0.032 | 0.021 | 2 265 | 84.43 |
| SVM | 0.032 | 0.021 | - | 60.47 |
| Three Ratio | 0.022 | 0.005 | - | 67.66 |
| Stacking-KD | 0.22 | 0.010 | 2 265 | 93.26 |
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