Article(id=1304925054442165076, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304924993196941811, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2026.02.017, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1745251200000, receivedDateStr=2025-04-22, revisedDate=1752422400000, revisedDateStr=2025-07-14, acceptedDate=null, acceptedDateStr=null, onlineDate=1789047977314, onlineDateStr=2026-09-10, pubDate=1771516800000, pubDateStr=2026-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789047977314, onlineIssueDateStr=2026-09-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789047977314, creator=13701087609, updateTime=1789047977314, updator=13701087609, issue=Issue{id=1304924993196941811, tenantId=1146029695717560320, journalId=1149653034449285133, year='2026', volume='59', issue='2', pageStart='1', pageEnd='158', issueExtLink='null', onlineDate='null', pubDate='1771516800000', pubDateStr='2026-02-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789047962712, creator='13701087609', updateTime=1789118140557, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1305219340496819100, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304924993196941811, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1305219340496819101, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1304924993196941811, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=148, endPage=158, ext={EN=ArticleExt(id=1304925054618325845, articleId=1304925054442165076, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Transformer residual life prediction based on pelican algorithm optimized random forest model and health index, columnId=null, journalTitle=Insulating Materials, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Aiming at the problem that the transformer life prediction model has low fit and ignores the influence of the operating state, a residual life prediction model (POA-RF model) based on pelican algorithm (POA) optimized random forest (RF) model was proposed. Taking preventive tests, online monitoring, defect reports, and account data as research objects, a transformer health index system consisting of transformer body, oil quality, and dissolved gas in oil health indices was constructed. Considering the corrective effect of operating status on residual life, with relevant parameters of the health index system as inputs, the POA was used to optimize the RF model to solve its overfitting problem and improve prediction accuracy. Experiments are conducted with the collected transformer instance data to verify the accuracy of the model. The results show that for the 8 groups of scrapped samples in the test samples, the average absolute error of the residual life predicted by the POA-RF model is 1.187 0 years, which is 20.52% and 49.02% lower than the predicted value of the RF model and the calculated value of the health index theory, respectively. For all the test samples, compared with other commonly used machine learning algorithms, the relevant performance indicators of the POA-RF model are all the best, and the optimization effect is obvious, which can better predict the residual life of transformer.
, authors=Aihui WEN
1, Bao WEN
1, Kunyu SONG
1, Weiping LIAO
1, Jin XU
2, Lingzhi GAO
2, *, Yunqi XIONG
2, authorsList=Aihui WEN, Bao WEN, Kunyu SONG, Weiping LIAO, Jin XU, Lingzhi GAO, Yunqi XIONG, authorCompany=null, correspAuthors=Lingzhi GAO, 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, fund=null), CN=ArticleExt(id=1304925056912610146, articleId=1304925054442165076, tenantId=1146029695717560320, journalId=1149653034449285133, language=CN, title=基于鹈鹕算法优化随机森林模型和健康指数的变压器剩余寿命预测, columnId=null, journalTitle=绝缘材料, columnName=, runingTitle=null, highlight=null, articleAbstract=
针对变压器寿命预测模型拟合度低且忽略运行状态影响的问题,提出基于鹈鹕算法(POA)优化随机森林(RF)模型的剩余寿命预测模型(POA-RF模型)。以预防性试验、在线监测、缺陷报告和台账数据为对象构建由变压器本体、油质和油中溶解气体健康指数等组成的变压器健康指数体系,考虑运行状态对剩余寿命的修正作用,以健康指数体系相关参量为输入,采用鹈鹕算法优化随机森林模型,解决其过拟合问题,提升预测准确性。以收集的变压器实例数据进行实验,验证模型的准确性。结果表明:对于测试样本中的8组报废样本,POA-RF模型预测的剩余寿命平均绝对误差为1.187 0年,比RF模型的预测值和健康指数理论的计算值分别减小了20.52%和49.02%;对于所有测试样本,和其他常用机器学习算法对比,POA-RF模型的相关性能指标均为最优,优化效果明显,能够较好地预测变压器的剩余寿命。
, authors=温爱辉
1, 文豹
1, 宋坤宇
1, 廖卫平
1, 徐进
2, 高凌志
2, *, 熊韵奇
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温爱辉(1983-),男(汉族),广东梅州人,高级工程师,主要从事电力系统及其自动化方向的研究
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高凌志(1999-),男(汉族),安徽淮南人,硕士生,主要从事变压器故障诊断和寿命预测的研究。
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1广东电网有限责任公司电力科学研究院,广东 广州 510080)]), AuthorCompany(id=1304925057269125990, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, xref=2, ext=[AuthorCompanyExt(id=1304925057277514599, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, companyId=1304925057269125990, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2South China University of Technology, Guangzhou 510641, China), AuthorCompanyExt(id=1304925057285903208, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, companyId=1304925057269125990, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2华南理工大学,广东 广州 510641)])], figs=[ArticleFig(id=1304925059823457174, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Fig.1, caption=
Principle of random forest algorithm, figureFileSmall=GHS0kgQ3J8ftC6o6pqvotA==, figureFileBig=aVkPX6dVEtiH+o//vs8xVg==, tableContent=null), ArticleFig(id=1304925059907343255, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=图1, caption=
随机森林算法原理, figureFileSmall=GHS0kgQ3J8ftC6o6pqvotA==, figureFileBig=aVkPX6dVEtiH+o//vs8xVg==, tableContent=null), ArticleFig(id=1304925060100281240, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Fig.2, caption=
Flow of the pelican algorithm optimized the random forest model, figureFileSmall=inLUe2iYwcRLvNcn9m438w==, figureFileBig=vehOHwQB+bgsFAuHJ/SF+w==, tableContent=null), ArticleFig(id=1304925060159001497, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=图2, caption=
鹈鹕算法优化随机森林模型流程, figureFileSmall=inLUe2iYwcRLvNcn9m438w==, figureFileBig=vehOHwQB+bgsFAuHJ/SF+w==, tableContent=null), ArticleFig(id=1304925060217721754, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Fig.3, caption=
The error distributions of residual life for 8 groups of end-of-life samples, figureFileSmall=lJk4t+FaZYnmuMn1hMVYgw==, figureFileBig=tCLKk2t5kRG//89iREhYPw==, tableContent=null), ArticleFig(id=1304925060293219227, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=图3, caption=
8组报废样本剩余寿命误差情况分布图, figureFileSmall=lJk4t+FaZYnmuMn1hMVYgw==, figureFileBig=tCLKk2t5kRG//89iREhYPw==, tableContent=null), ArticleFig(id=1304925060364522396, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Fig.4, caption=
Prediction results of test samples based on RF model, figureFileSmall=gxJwx0atDqoyYCCke8PCeQ==, figureFileBig=2Bn2/T01KpDYI63GhaZrKw==, tableContent=null), ArticleFig(id=1304925060456797085, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=图4, caption=
测试样本RF模型预测结果, figureFileSmall=gxJwx0atDqoyYCCke8PCeQ==, figureFileBig=2Bn2/T01KpDYI63GhaZrKw==, tableContent=null), ArticleFig(id=1304925060523905950, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Fig.5, caption=
Prediction results of test samples based on POA-RF model, figureFileSmall=AVBON50235M4G/XnDwHZvw==, figureFileBig=aJ2gkw17AfKAYPBfffaHnw==, tableContent=null), ArticleFig(id=1304925060595209119, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=图5, caption=
测试样本POA-RF模型预测结果, figureFileSmall=AVBON50235M4G/XnDwHZvw==, figureFileBig=aJ2gkw17AfKAYPBfffaHnw==, tableContent=null), ArticleFig(id=1304925060670706592, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Fig.6, caption=
Comparison curves of adaptation value, figureFileSmall=KEQV7ZXH7KvcUBQGZLmo1A==, figureFileBig=27AAsq4q/fXaFQKqrjHuAA==, tableContent=null), ArticleFig(id=1304925060737815457, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=图6, caption=
适应度值对比曲线, figureFileSmall=KEQV7ZXH7KvcUBQGZLmo1A==, figureFileBig=27AAsq4q/fXaFQKqrjHuAA==, tableContent=null), ArticleFig(id=1304925060792341410, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 1, caption=
Transformer load factor
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器平均负荷率/% | 负荷系数fL |
|---|
| 0~40 | 1.00 |
| 40~60 | 1.05 |
| 60~70 | 1.10 |
| 70~80 | 1.25 |
| 80~150 | 1.60 |
), ArticleFig(id=1304925060859450275, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表1, caption=
变压器负荷系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器平均负荷率/% | 负荷系数fL |
|---|
| 0~40 | 1.00 |
| 40~60 | 1.05 |
| 60~70 | 1.10 |
| 70~80 | 1.25 |
| 80~150 | 1.60 |
), ArticleFig(id=1304925060918170532, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 2, caption=
Transformer environmental factor
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器安装位置及最高温度 | 环境系数fE |
|---|
| 室内 | 0.95 |
| 室外,年最高温度≤40℃ | 1.00 |
| 室外,年最高温度>40℃ | 1.10 |
), ArticleFig(id=1304925060989473701, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表2, caption=
变压器环境系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器安装位置及最高温度 | 环境系数fE |
|---|
| 室内 | 0.95 |
| 室外,年最高温度≤40℃ | 1.00 |
| 室外,年最高温度>40℃ | 1.10 |
), ArticleFig(id=1304925061048193958, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 3, caption=
Transformer storage factor
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器出厂至投运时间间隔/d | 储存系数fS |
|---|
| 0~365 | 1.00 |
| 365~730 | 1.02 |
| 730~1460 | 1.05 |
| >1460 | 1.10 |
), ArticleFig(id=1304925061115302823, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表3, caption=
变压器储存系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器出厂至投运时间间隔/d | 储存系数fS |
|---|
| 0~365 | 1.00 |
| 365~730 | 1.02 |
| 730~1460 | 1.05 |
| >1460 | 1.10 |
), ArticleFig(id=1304925061182411688, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 4, caption=
Transformer average oil temperature factor
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器平均油温/℃ | 变压器平均油温系数fO |
|---|
| 0~45 | 0.90 |
| 45~60 | 0.95 |
| 60~75 | 1.00 |
| 75~160 | 1.10 |
), ArticleFig(id=1304925061241131945, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表4, caption=
变压器平均油温系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器平均油温/℃ | 变压器平均油温系数fO |
|---|
| 0~45 | 0.90 |
| 45~60 | 0.95 |
| 60~75 | 1.00 |
| 75~160 | 1.10 |
), ArticleFig(id=1304925061308240810, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 5, caption=
Transformer average winding temperature factor
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器平均绕组温度/℃ | 变压器平均绕组温度系数fW |
|---|
| 0~45 | 0.90 |
| 45~70 | 0.95 |
| 70~80 | 1.00 |
| 80~160 | 1.10 |
), ArticleFig(id=1304925061366961067, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表5, caption=
变压器平均绕组温度系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 变压器平均绕组温度/℃ | 变压器平均绕组温度系数fW |
|---|
| 0~45 | 0.90 |
| 45~70 | 0.95 |
| 70~80 | 1.00 |
| 80~160 | 1.10 |
), ArticleFig(id=1304925061438264236, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 6, caption=
Scoring table for oil quality parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 评分 | 0分 | 2分 | 6分 | 8分 | 10分 |
|---|
| 微水含量/(mg/L) | <5 | 5~10 | 10~15 | >15 | — |
| 介质损耗因数/% | <0.5 | 0.5~1.0 | 1.0~1.5 | 1.5~2.0 | >2.0 |
| 击穿电压/kV | >50 | 40~50 | 30~40 | <30 | — |
| 体积电阻率/(×1010 Ω·m) | >0.5 | 0.3~0.5 | 0.2~0.3 | 0.1~0.2 | <0.1 |
), ArticleFig(id=1304925061496984493, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表6, caption=
油质参数评分表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 评分 | 0分 | 2分 | 6分 | 8分 | 10分 |
|---|
| 微水含量/(mg/L) | <5 | 5~10 | 10~15 | >15 | — |
| 介质损耗因数/% | <0.5 | 0.5~1.0 | 1.0~1.5 | 1.5~2.0 | >2.0 |
| 击穿电压/kV | >50 | 40~50 | 30~40 | <30 | — |
| 体积电阻率/(×1010 Ω·m) | >0.5 | 0.3~0.5 | 0.2~0.3 | 0.1~0.2 | <0.1 |
), ArticleFig(id=1304925061580870574, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 7, caption=
Weighting table for oil quality parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 油质参数 | 权重 | 权重符号 |
|---|
| 微水含量 | 0.219 1 | W1 |
| 介质损耗因数 | 0.342 5 | W2 |
| 击穿电压 | 0.219 1 | W3 |
| 体积电阻率 | 0.219 1 | W4 |
), ArticleFig(id=1304925061647979439, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表7, caption=
油质参数权重表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 油质参数 | 权重 | 权重符号 |
|---|
| 微水含量 | 0.219 1 | W1 |
| 介质损耗因数 | 0.342 5 | W2 |
| 击穿电压 | 0.219 1 | W3 |
| 体积电阻率 | 0.219 1 | W4 |
), ArticleFig(id=1304925061710894000, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 8, caption=
Scoring table for dissolved gases in oil
, figureFileSmall=null, figureFileBig=null, tableContent=
| 评分 | 0分 | 2分 | 6分 | 8分 | 10分 | 16分 |
|---|
| /(×10-6) | <20 | 20~40 | 40~100 | — | 100~200 | >200 |
| /(×10-6) | <10 | 10~20 | 20~40 | 40~65 | 65~150 | >150 |
| /(×10-6) | <10 | 10~20 | 20~40 | 40~65 | 65~150 | >150 |
| /(×10-6) | <10 | 10~20 | 20~40 | 40~65 | 65~150 | >150 |
| /(×10-6) | <0.5 | 0.5~1 | 1~3 | 3~5 | >5 | — |
), ArticleFig(id=1304925061794780081, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表8, caption=
油中溶解气体评分表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 评分 | 0分 | 2分 | 6分 | 8分 | 10分 | 16分 |
|---|
| /(×10-6) | <20 | 20~40 | 40~100 | — | 100~200 | >200 |
| /(×10-6) | <10 | 10~20 | 20~40 | 40~65 | 65~150 | >150 |
| /(×10-6) | <10 | 10~20 | 20~40 | 40~65 | 65~150 | >150 |
| /(×10-6) | <10 | 10~20 | 20~40 | 40~65 | 65~150 | >150 |
| /(×10-6) | <0.5 | 0.5~1 | 1~3 | 3~5 | >5 | — |
), ArticleFig(id=1304925061878666162, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 9, caption=
Weighting table for dissolved gases in oil
, figureFileSmall=null, figureFileBig=null, tableContent=
| 气体 | 权重 | 权重符号 |
|---|
| H2 | 0.192 3 | |
| CH4 | 0.115 4 | |
| C2H6 | 0.115 4 | |
| C2H4 | 0.115 4 | |
| C2H2 | 0.461 5 | |
), ArticleFig(id=1304925061945775027, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表9, caption=
油中溶解气体权重表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 气体 | 权重 | 权重符号 |
|---|
| H2 | 0.192 3 | |
| CH4 | 0.115 4 | |
| C2H6 | 0.115 4 | |
| C2H4 | 0.115 4 | |
| C2H2 | 0.461 5 | |
), ArticleFig(id=1304925062138713012, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 10, caption=
fcom value rule when HIM is maximum
, figureFileSmall=null, figureFileBig=null, tableContent=
| 组合关系 | fcom |
|---|
| max(HIQ, HID)≤2 | 1.00 |
| 2<max(HIQ, HID)≤4 | 1.07 |
| max(HIQ, HID)>4 | 1.15 |
), ArticleFig(id=1304925062214210485, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表10, caption=
HIM最大时fcom的取值规则
, figureFileSmall=null, figureFileBig=null, tableContent=
| 组合关系 | fcom |
|---|
| max(HIQ, HID)≤2 | 1.00 |
| 2<max(HIQ, HID)≤4 | 1.07 |
| max(HIQ, HID)>4 | 1.15 |
), ArticleFig(id=1304925062281319350, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 11, caption=
fcom value rule when HIM is not maximum
, figureFileSmall=null, figureFileBig=null, tableContent=
| 组合关系 | fcom |
|---|
| HIQ/HID≤0.3 | 1.00 |
| 0.3<HIQ/HID≤0.6 | 1.07 |
| HIQ/HID>0.6 | 1.15 |
), ArticleFig(id=1304925062340039607, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表11, caption=
HIM非最大时fcom的取值规则
, figureFileSmall=null, figureFileBig=null, tableContent=
| 组合关系 | fcom |
|---|
| HIQ/HID≤0.3 | 1.00 |
| 0.3<HIQ/HID≤0.6 | 1.07 |
| HIQ/HID>0.6 | 1.15 |
), ArticleFig(id=1304925062398759864, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 12, caption=
Operating state adjustment factors
, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障类型 | 运行状态调节系数K1 |
|---|
| 正常 | 0.95 |
| 低温过热故障 | 1.10 |
| 局部放电故障 | 1.20 |
| 低能放电故障 | 1.40 |
| 中温过热故障 | 1.50 |
| 高能放电故障 | 1.70 |
| 高温过热故障 | 1.90 |
), ArticleFig(id=1304925062474257337, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表12, caption=
运行状态调节系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 故障类型 | 运行状态调节系数K1 |
|---|
| 正常 | 0.95 |
| 低温过热故障 | 1.10 |
| 局部放电故障 | 1.20 |
| 低能放电故障 | 1.40 |
| 中温过热故障 | 1.50 |
| 高能放电故障 | 1.70 |
| 高温过热故障 | 1.90 |
), ArticleFig(id=1304925062532977594, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 13, caption=
Defect adjustment factors
, figureFileSmall=null, figureFileBig=null, tableContent=
| 近五年缺陷次数/次 | 缺陷调节系数K2 |
|---|
| 0 | 0.95 |
| 1 | 1.00 |
| 2~4 | 1.05 |
| 5~10 | 1.20 |
| >10 | 1.50 |
), ArticleFig(id=1304925062595892155, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表13, caption=
缺陷调节系数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 近五年缺陷次数/次 | 缺陷调节系数K2 |
|---|
| 0 | 0.95 |
| 1 | 1.00 |
| 2~4 | 1.05 |
| 5~10 | 1.20 |
| >10 | 1.50 |
), ArticleFig(id=1304925062667195324, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 14, caption=
Characterizing parameters for the residual life of transformer
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | 特征量 | 编号 | 特征量 |
|---|
| 1 | 储存时间 | 10 | tanδ |
| 2 | 在运时间 | 11 | 体积电阻率 |
| 3 | 平均负载率 | 12 | H2体积分数 |
| 4 | 平均油温 | 13 | CH4体积分数 |
| 5 | 平均绕组温度 | 14 | C2H6体积分数 |
| 6 | 运行环境 | 15 | C2H4体积分数 |
| 7 | 年最高温度 | 16 | C2H2体积分数 |
| 8 | 微水含量 | 17 | 缺陷次数 |
| 9 | 击穿电压 | 18 | 故障类型 |
), ArticleFig(id=1304925062730109885, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表14, caption=
变压器剩余寿命特征参量
, figureFileSmall=null, figureFileBig=null, tableContent=
| 编号 | 特征量 | 编号 | 特征量 |
|---|
| 1 | 储存时间 | 10 | tanδ |
| 2 | 在运时间 | 11 | 体积电阻率 |
| 3 | 平均负载率 | 12 | H2体积分数 |
| 4 | 平均油温 | 13 | CH4体积分数 |
| 5 | 平均绕组温度 | 14 | C2H6体积分数 |
| 6 | 运行环境 | 15 | C2H4体积分数 |
| 7 | 年最高温度 | 16 | C2H2体积分数 |
| 8 | 微水含量 | 17 | 缺陷次数 |
| 9 | 击穿电压 | 18 | 故障类型 |
), ArticleFig(id=1304925062784635838, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 15, caption=
Residual life prediction value for 8 groups of end-of-life samples
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样本编号 | 实际值/年 | 健康指数理论计算值/年 | RF模型预测值/年 | POA-RF模型预测值/年 |
|---|
| 1 | 5.112 3 | 1.518 6 | 4.659 3 | 3.962 7 |
| 2 | 3.704 1 | 2.240 0 | 5.205 6 | 2.810 2 |
| 3 | 5.082 2 | 2.114 1 | 8.077 8 | 4.955 1 |
| 4 | 0.460 3 | 0 | 2.733 9 | 2.296 8 |
| 5 | 2.956 2 | 0 | 1.317 4 | 1.357 9 |
| 6 | 2.353 4 | 0 | 3.511 3 | 2.121 9 |
| 7 | 1.934 2 | 0 | 3.791 3 | 4.135 6 |
| 8 | 3.295 9 | 0.398 2 | 3.365 3 | 1.838 4 |
| 平均绝对误差 | — | 2.328 5 | 1.493 4 | 1.187 0 |
), ArticleFig(id=1304925062860133311, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表15, caption=
8组报废样本剩余寿命预测值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 样本编号 | 实际值/年 | 健康指数理论计算值/年 | RF模型预测值/年 | POA-RF模型预测值/年 |
|---|
| 1 | 5.112 3 | 1.518 6 | 4.659 3 | 3.962 7 |
| 2 | 3.704 1 | 2.240 0 | 5.205 6 | 2.810 2 |
| 3 | 5.082 2 | 2.114 1 | 8.077 8 | 4.955 1 |
| 4 | 0.460 3 | 0 | 2.733 9 | 2.296 8 |
| 5 | 2.956 2 | 0 | 1.317 4 | 1.357 9 |
| 6 | 2.353 4 | 0 | 3.511 3 | 2.121 9 |
| 7 | 1.934 2 | 0 | 3.791 3 | 4.135 6 |
| 8 | 3.295 9 | 0.398 2 | 3.365 3 | 1.838 4 |
| 平均绝对误差 | — | 2.328 5 | 1.493 4 | 1.187 0 |
), ArticleFig(id=1304925062923047872, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 16, caption=
Parameter settings for SVM and DT
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 参数 |
|---|
| SVM | KernelScale=1.00, c=0.8, ε=0.080 |
| DT | MinLeafSize=7 |
), ArticleFig(id=1304925062990156737, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表16, caption=
SVM和DT的参数设置
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 参数 |
|---|
| SVM | KernelScale=1.00, c=0.8, ε=0.080 |
| DT | MinLeafSize=7 |
), ArticleFig(id=1304925063061459906, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 17, caption=
Parameter settings for optimization algorithms of PSO, SA, GWO, and SSA
, figureFileSmall=null, figureFileBig=null, tableContent=
| 优化算法 | 参数 |
|---|
| PSO | Vmax=6; wmax=0.9; wmin=0.6; c1=2; c2=2; |
| SA | 优化变化容忍度T = 10×10-10 |
| GWO | — |
| SSA | 生产者比例P_percent=0.2,危险麻雀比例为0.2,生产者更新策略切换阈值为0.8 |
), ArticleFig(id=1304925063136957379, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表17, caption=
优化算法PSO、SA、GWO和SSA的参数设置
, figureFileSmall=null, figureFileBig=null, tableContent=
| 优化算法 | 参数 |
|---|
| PSO | Vmax=6; wmax=0.9; wmin=0.6; c1=2; c2=2; |
| SA | 优化变化容忍度T = 10×10-10 |
| GWO | — |
| SSA | 生产者比例P_percent=0.2,危险麻雀比例为0.2,生产者更新策略切换阈值为0.8 |
), ArticleFig(id=1304925063216649156, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=EN, label=Table 18, caption=
Comparison of model evaluation parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | EMAE/年 | EMSE | ERMSE |
|---|
| RF | 2.003 3 | 6.193 3 | 2.488 6 |
| SVM | 8.202 8 | 121.437 8 | 11.019 9 |
| DT | 2.682 7 | 19.990 5 | 4.471 1 |
| POA-SVM | 2.572 3 | 11.875 0 | 3.446 0 |
| POA-DT | 2.502 3 | 14.547 0 | 3.814 1 |
| PSO-RF | 1.881 2 | 5.490 3 | 2.343 1 |
| SA-RF | 2.089 8 | 6.503 2 | 2.550 1 |
| GWO-RF | 1.916 6 | 5.479 2 | 2.340 8 |
| SSA-RF | 2.348 6 | 8.496 0 | 2.914 8 |
| POA-RF | 1.690 5 | 4.618 0 | 2.148 9 |
), ArticleFig(id=1304925063279563717, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1304925054442165076, language=CN, label=表18, caption=
模型评估参数对比表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | EMAE/年 | EMSE | ERMSE |
|---|
| RF | 2.003 3 | 6.193 3 | 2.488 6 |
| SVM | 8.202 8 | 121.437 8 | 11.019 9 |
| DT | 2.682 7 | 19.990 5 | 4.471 1 |
| POA-SVM | 2.572 3 | 11.875 0 | 3.446 0 |
| POA-DT | 2.502 3 | 14.547 0 | 3.814 1 |
| PSO-RF | 1.881 2 | 5.490 3 | 2.343 1 |
| SA-RF | 2.089 8 | 6.503 2 | 2.550 1 |
| GWO-RF | 1.916 6 | 5.479 2 | 2.340 8 |
| SSA-RF | 2.348 6 | 8.496 0 | 2.914 8 |
| POA-RF | 1.690 5 | 4.618 0 | 2.148 9 |
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