Article(id=1209928223933207055, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1209928218329616824, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2024.05.014, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1690732800000, receivedDateStr=2023-07-31, revisedDate=1696953600000, revisedDateStr=2023-10-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1766398967965, onlineDateStr=2025-12-22, pubDate=1716134400000, pubDateStr=2024-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1766398967965, onlineIssueDateStr=2025-12-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1766398967965, creator=13701087609, updateTime=1766398967965, updator=13701087609, issue=Issue{id=1209928218329616824, tenantId=1146029695717560320, journalId=1149653034449285133, year='2024', volume='57', issue='5', pageStart='1', pageEnd='124', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1766398966629, creator=13701087609, updateTime=1766563901766, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1210620006501585415, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1209928218329616824, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1210620006501585416, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1209928218329616824, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=95, endPage=102, ext={EN=ArticleExt(id=1209928225573179944, articleId=1209928223933207055, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Research on dynamic mechanical properties of transformer insulation pressboard under periodic electromagnetic forces, columnId=1209928219172671930, journalTitle=Insulating Materials, columnName=Special Issue on High-performance Transformer Insulation, runingTitle=null, highlight=null, articleAbstract=
The mechanical properties of insulation pressboard are key factors in modeling the structure of transformer windings. The operating transformer winding is subjected to periodic electromagnetic forces, and the static stress-strain test results cannot characterize the dynamic mechanical properties of insulation pressboard. In this paper, an asymmetric hysteresis model was proposed to study the dynamic mechanical properties of the insulation pressboard under periodic electromagnetic forces, and the model includes not only linear damping and stiffness coefficients, but also nonlinear dynamic stiffness. In the experiment, a pneumatic vibration exciter was used to simulate the amplitude and frequency of the electromagnetic force, and the stress-strain data of the insulation pressboards under different clamping forces was obtained. A multi-objective optimization algorithm based on NSGA-II algorithm was used to train the model parameters. The results show that the stiffness and damping of the insulation pressboard are closely related to the clamping force, and the oil-immersed pressboard has obvious damping characteristics. As the clamping force increases, the dynamic stiffness of the insulation pressboard decreases during the loading and unloading processes. Compared with the amplitude of periodic electromagnetic force, the frequency of periodic electromagnetic force has more significant effect on the mechanical characteristics of insulation pressboard.
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绝缘垫块的机械特性是变压器绕组结构建模的关键因素。运行变压器绕组受到周期电磁力作用,静态的应力-应变测试结果无法表征绝缘垫块的动态机械特性。针对周期电磁力下绝缘垫块的动态机械特性,本研究提出了一个非对称的滞回模型,该模型不仅包含线性的阻尼和刚度,还包含非线性的动态刚度。在实验中,利用气动激振器模拟电磁力的幅值和频率,获取不同压紧力下绝缘垫块的应力-应变数据,并利用基于NSGA-II算法的多目标优化算法训练模型参数。结果表明:绝缘垫块的刚度和阻尼均与压紧力存在密切关系,且油浸垫块具有较明显的阻尼特征。随着压紧力的增大,加压和减压过程中绝缘垫块的动态刚度幅值减小。与周期电磁力的幅值相比,其频率对绝缘垫块机械特性的影响更显著。
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洪凯星(1985-),男(汉族),浙江台州人,副教授,研究方向为信号处理、电力变压器故障的诊断。
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钱国超(1981-),男(汉族),云南曲靖人,正高级工程师,研究方向为电气设备的状态智能诊断与评估技术。
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Winding structure of power transformer, figureFileSmall=4k2seULFzHNHxizMg1KJsg==, figureFileBig=wFh10ziA4P3PwSDvMAA0Fw==, tableContent=null), ArticleFig(id=1217500253461332479, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图1, caption=
电力变压器的绕组结构, figureFileSmall=4k2seULFzHNHxizMg1KJsg==, figureFileBig=wFh10ziA4P3PwSDvMAA0Fw==, tableContent=null), ArticleFig(id=1217500253574578694, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.2, caption=
Flowchart of NSGA-II algorithm, figureFileSmall=jCTLyhSe6KJkImXslFZ1ZQ==, figureFileBig=CwVUEACb4X/rg7/J4XQNyw==, tableContent=null), ArticleFig(id=1217500253650076171, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图2, caption=
NSGA-II算法流程图, figureFileSmall=jCTLyhSe6KJkImXslFZ1ZQ==, figureFileBig=CwVUEACb4X/rg7/J4XQNyw==, tableContent=null), ArticleFig(id=1217500253775905295, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.3, caption=
Elitist selection during the genetic evolution, figureFileSmall=W4Ze173dtei31dIABfwZ/Q==, figureFileBig=vRZgme30fJHDufIzcw/qrg==, tableContent=null), ArticleFig(id=1217500253897540116, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图3, caption=
遗传进化中的精英选取, figureFileSmall=W4Ze173dtei31dIABfwZ/Q==, figureFileBig=vRZgme30fJHDufIzcw/qrg==, tableContent=null), ArticleFig(id=1217500254002397720, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.4, caption=
Experimental setup, figureFileSmall=ALBK9ilKxwPakfHY5rnteA==, figureFileBig=yAg3p5+gpPhz5TmE29xYeg==, tableContent=null), ArticleFig(id=1217500254086283804, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图4, caption=
实验装置, figureFileSmall=ALBK9ilKxwPakfHY5rnteA==, figureFileBig=yAg3p5+gpPhz5TmE29xYeg==, tableContent=null), ArticleFig(id=1217500254182752801, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.5, caption=
Stress and strain curves of the insulation pressboard, figureFileSmall=7Cxa4853RN/LTxxxERKzqg==, figureFileBig=6uvcNu4iRgGtg7FvB9SsjA==, tableContent=null), ArticleFig(id=1217500254291804708, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图5, caption=
绝缘垫块的应变和应力曲线, figureFileSmall=7Cxa4853RN/LTxxxERKzqg==, figureFileBig=6uvcNu4iRgGtg7FvB9SsjA==, tableContent=null), ArticleFig(id=1217500254388273704, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.6, caption=
Stress-strain curves of dry insulation pressboard under different clamping forces, figureFileSmall=SAMCex5vKMk2CGHLbyMQdw==, figureFileBig=GVHXy/z/TLj3AlOkTeqaGA==, tableContent=null), ArticleFig(id=1217500254484742700, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图6, caption=
不同压紧力下干式绝缘垫块的应力-应变曲线, figureFileSmall=SAMCex5vKMk2CGHLbyMQdw==, figureFileBig=GVHXy/z/TLj3AlOkTeqaGA==, tableContent=null), ArticleFig(id=1217500254606377520, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.7, caption=
Stress-strain curves of oil-immersed insulation pressboard under different clamping forces, figureFileSmall=Iqk7J63u+8+1QyyEAs8SxA==, figureFileBig=z4FgQUx/f58/9FXEvb8Ecg==, tableContent=null), ArticleFig(id=1217500254681874995, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图7, caption=
不同压紧力下油浸垫块的应力-应变曲线, figureFileSmall=Iqk7J63u+8+1QyyEAs8SxA==, figureFileBig=z4FgQUx/f58/9FXEvb8Ecg==, tableContent=null), ArticleFig(id=1217500254757372470, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.8, caption=
Pareto-optimal fronts during the model training, figureFileSmall=dAvrl8ILwsd0x0/SUumS6A==, figureFileBig=977l9hZ3aEVxt+PTh3xCAQ==, tableContent=null), ArticleFig(id=1217500254828675643, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图8, caption=
模型训练中的Pareto最优前沿, figureFileSmall=dAvrl8ILwsd0x0/SUumS6A==, figureFileBig=977l9hZ3aEVxt+PTh3xCAQ==, tableContent=null), ArticleFig(id=1217500254920950334, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.9, caption=
Relationship between mechanical coefficients of insulation pressboard and clamping force, figureFileSmall=X3Z294JOJP39Xc3mTwinnw==, figureFileBig=skHdh6RHKdbdMAhJA61zrA==, tableContent=null), ArticleFig(id=1217500255021613633, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图9, caption=
绝缘垫块机械参数与压紧力之间的关系, figureFileSmall=X3Z294JOJP39Xc3mTwinnw==, figureFileBig=skHdh6RHKdbdMAhJA61zrA==, tableContent=null), ArticleFig(id=1217500256263127621, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.10, caption=
Comparison on recognition results of stress-strain data with different models, figureFileSmall=0OuRS7F8DywlSV4ZpPnwDw==, figureFileBig=Ewc4fzOckfNLp9qISulwMA==, tableContent=null), ArticleFig(id=1217500256359596618, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图10, caption=
不同模型对应力-应变数据识别结果的比较, figureFileSmall=0OuRS7F8DywlSV4ZpPnwDw==, figureFileBig=Ewc4fzOckfNLp9qISulwMA==, tableContent=null), ArticleFig(id=1217500256443482700, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.11, caption=
Dynamic stiffness during the loading and unloading processes, figureFileSmall=EX9UYHqgHqaO5SLYvr8W8A==, figureFileBig=wrUzjD8hRdIW5H9PCP/DUw==, tableContent=null), ArticleFig(id=1217500256552534607, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图11, caption=
加压和减压过程中的动态刚度, figureFileSmall=EX9UYHqgHqaO5SLYvr8W8A==, figureFileBig=wrUzjD8hRdIW5H9PCP/DUw==, tableContent=null), ArticleFig(id=1217500256640614995, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.12, caption=
Change trends of model parameters with clamping force, figureFileSmall=Y5VlTkBzqFZSGP2U1vFFYQ==, figureFileBig=Wz6EYDkXJ12B9vaoaZZvcg==, tableContent=null), ArticleFig(id=1217500256707723862, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图12, caption=
模型参数随压紧力的变化趋势, figureFileSmall=Y5VlTkBzqFZSGP2U1vFFYQ==, figureFileBig=Wz6EYDkXJ12B9vaoaZZvcg==, tableContent=null), ArticleFig(id=1217500256791609945, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.13, caption=
Stress-strain curves of insulation pressboards with different dimension, figureFileSmall=8frhrDcIIWfYy6m3gaDGeg==, figureFileBig=qmYQEIzIBfHPHz1nCciphw==, tableContent=null), ArticleFig(id=1217500256862913115, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图13, caption=
不同尺寸绝缘垫块的应力-应变曲线, figureFileSmall=8frhrDcIIWfYy6m3gaDGeg==, figureFileBig=qmYQEIzIBfHPHz1nCciphw==, tableContent=null), ArticleFig(id=1217500257009713758, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.14, caption=
Stress-strain curves under the forces with different frequencies, figureFileSmall=DP3+3OjsXtl/60Q5QJuFqA==, figureFileBig=NzpAahkGHhz8jS5nxDMnYQ==, tableContent=null), ArticleFig(id=1217500257131348575, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图14, caption=
不同频率应力下的应力-应变曲线, figureFileSmall=DP3+3OjsXtl/60Q5QJuFqA==, figureFileBig=NzpAahkGHhz8jS5nxDMnYQ==, tableContent=null), ArticleFig(id=1217500257211040354, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Fig.15, caption=
Mechanical properties under different frequencies, figureFileSmall=R/Fbi34Pm73DkUEXKYMnlg==, figureFileBig=Fx4iQ3ZByoVdAwvMoIHvzw==, tableContent=null), ArticleFig(id=1217500257353646693, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=图15, caption=
不同频率下的机械特性, figureFileSmall=R/Fbi34Pm73DkUEXKYMnlg==, figureFileBig=Fx4iQ3ZByoVdAwvMoIHvzw==, tableContent=null), ArticleFig(id=1217500257462698601, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Tab.1, caption=
Configuration of pneumatic vibrator and insulation pressboard, figureFileSmall=null, figureFileBig=null, tableContent=
| 频率/Hz | 动态应力/MPa | 气压/MPa | 绝缘垫块尺寸(长×宽)/mm2 |
|---|
| 100 | 0.060 | 0.5 | 20×30 |
| 0.045 | 0.5 | 30×30 |
| 0.030 | 0.5 | 40×30 |
| 50 | 0.060 | 0.2 | 40×30 |
), ArticleFig(id=1217500257567556203, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=表1, caption=
气动激振器和绝缘垫块的配置
, figureFileSmall=null, figureFileBig=null, tableContent=
| 频率/Hz | 动态应力/MPa | 气压/MPa | 绝缘垫块尺寸(长×宽)/mm2 |
|---|
| 100 | 0.060 | 0.5 | 20×30 |
| 0.045 | 0.5 | 30×30 |
| 0.030 | 0.5 | 40×30 |
| 50 | 0.060 | 0.2 | 40×30 |
), ArticleFig(id=1217500257668219502, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=EN, label=Tab.2, caption=
Effects of dynamic stress amplitude on the parameters of the asymmetric hysteresis model, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型参数 | 0.5 MPa | 2.0 MPa | 4.0 MPa |
|---|
| 大绝缘垫块 | k+/(×107 Pa) | 3.2 | 7.3 | 9.9 |
| k-/(×107 Pa) | 3.2 | 7.0 | 9.5 |
| c+/(×104 Pa) | 1.8 | 7.6 | 19 |
| c-/(×104 Pa) | 1.6 | 7.1 | 14 |
| 中绝缘垫块 | k+/(×107 Pa) | 3.4 | 7.6 | 9.7 |
| k-/(×107 Pa) | 3.4 | 7.2 | 9.4 |
| c+/(×104 Pa) | 1.6 | 7.9 | 18 |
| c-/(×104 Pa) | 1.4 | 7.3 | 16 |
| 小绝缘垫块 | k+/(×107 Pa) | 3.2 | 7.5 | 9.9 |
| k-/(×107 Pa) | 3.2 | 7.1 | 9.7 |
| c+/(×104 Pa) | 1.7 | 7.3 | 17 |
| c-/(×104 Pa) | 1.5 | 7.8 | 14 |
), ArticleFig(id=1217500257768882800, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1209928223933207055, language=CN, label=表2, caption=
动态应力幅值对非对称滞回模型参数的影响
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型参数 | 0.5 MPa | 2.0 MPa | 4.0 MPa |
|---|
| 大绝缘垫块 | k+/(×107 Pa) | 3.2 | 7.3 | 9.9 |
| k-/(×107 Pa) | 3.2 | 7.0 | 9.5 |
| c+/(×104 Pa) | 1.8 | 7.6 | 19 |
| c-/(×104 Pa) | 1.6 | 7.1 | 14 |
| 中绝缘垫块 | k+/(×107 Pa) | 3.4 | 7.6 | 9.7 |
| k-/(×107 Pa) | 3.4 | 7.2 | 9.4 |
| c+/(×104 Pa) | 1.6 | 7.9 | 18 |
| c-/(×104 Pa) | 1.4 | 7.3 | 16 |
| 小绝缘垫块 | k+/(×107 Pa) | 3.2 | 7.5 | 9.9 |
| k-/(×107 Pa) | 3.2 | 7.1 | 9.7 |
| c+/(×104 Pa) | 1.7 | 7.3 | 17 |
| c-/(×104 Pa) | 1.5 | 7.8 | 14 |
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