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The correlation between methanol content and polymerization degree of insulating paper was studied through the detection and analysis of ageing characteristic product methanol of insulating paper, and the characteristic parameter of methanol content in oil, which can characterize the ageing state of insulating paper, was put forward. The results show that there is a good linear correlation between the polymerization degree logarithm of insulating paper and the methanol content, and the linear correlations are highly similar under different experimental conditions, which can be expressed as lnDP=aC+b. The characteristic values of methanol content in oil proposed for transformers with different voltage levels can judge the ageing state of insulating paper effectively, and thus the operation status of transformer can be diagnosed and evaluated.
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通过对绝缘纸老化特征产物甲醇的检测分析,探究甲醇含量与绝缘纸聚合度之间的相关性,提出表征绝缘纸老化状况的油中甲醇含量的特征参考值。结果表明:绝缘纸聚合度的对数与甲醇含量之间存在良好的线性相关性,且在不同实验条件下,其线性关系均高度相似,可表示为lnDP=aC+b。针对不同电压等级变压器提出的表征绝缘纸老化状况的油中甲醇含量特征值,可对绝缘纸老化状况进行有效判断,从而诊断和评估变压器的运行状态。
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30(7):110-114., articleTitle=变压器油浸绝缘纸老化产生甲醇的途径, refAbstract=null)], funds=[Fund(id=1210913941807566893, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, awardId=YNKJXM20190707, language=CN, fundingSource=云南电网有限责任公司科技项目(YNKJXM20190707), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1210913937273525071, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, xref=1, ext=[AuthorCompanyExt(id=1210913937281913679, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, companyId=1210913937273525071, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Influence curve of temperature on the polymerization degree of insulating paper, figureFileSmall=p9JQmRRFvdYy/GpXjQE4Ug==, figureFileBig=jaAYqZQwmoYCkK6qTAtJjg==, tableContent=null), ArticleFig(id=1210913939727193060, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=CN, label=图1, caption=
温度对绝缘纸聚合度的影响曲线, figureFileSmall=p9JQmRRFvdYy/GpXjQE4Ug==, figureFileBig=jaAYqZQwmoYCkK6qTAtJjg==, tableContent=null), ArticleFig(id=1210913939836244971, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=EN, label=Fig.2, caption=
Influence curve of temperature on the methanol content in oil, figureFileSmall=UF2Aw1OAI//CFG8ZMOlkxw==, figureFileBig=utKLKNH1T0HlB7E/Gw+SYg==, tableContent=null), ArticleFig(id=1210913939941102576, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=CN, label=图2, caption=
温度对油中甲醇含量的影响曲线, figureFileSmall=UF2Aw1OAI//CFG8ZMOlkxw==, figureFileBig=utKLKNH1T0HlB7E/Gw+SYg==, tableContent=null), ArticleFig(id=1210913940058543092, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=EN, label=Fig.3, caption=
Influence curve of water on the polymerization degree of insulating paper, figureFileSmall=Df0HdJGTEdXpCO8NjBAjGQ==, figureFileBig=JQG+8EzpiH08Q0nKbcYAcA==, tableContent=null), ArticleFig(id=1210913940192760824, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=CN, label=图3, caption=
水分对绝缘纸聚合度的影响曲线, figureFileSmall=Df0HdJGTEdXpCO8NjBAjGQ==, figureFileBig=JQG+8EzpiH08Q0nKbcYAcA==, tableContent=null), ArticleFig(id=1210913940297618429, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=EN, label=Fig.4, caption=
Influence curve of water on the methanol content in oil, figureFileSmall=vn4TGYWqK7MvoqVpa49Psw==, figureFileBig=wI9zPcUj3/Mp8jBOPmLvxQ==, tableContent=null), ArticleFig(id=1210913940398281727, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=CN, label=图4, caption=
水分对油中甲醇含量的影响曲线, figureFileSmall=vn4TGYWqK7MvoqVpa49Psw==, figureFileBig=wI9zPcUj3/Mp8jBOPmLvxQ==, tableContent=null), ArticleFig(id=1210913940511526912, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=EN, label=Fig.5, caption=
Relationship between polymerization degree of insulating paper and methanol content, figureFileSmall=CwEYmHbRUbRg2sRjd/t/Ww==, figureFileBig=H2B7tF74cvaBn6ELeJareg==, tableContent=null), ArticleFig(id=1210913940658327556, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=CN, label=图5, caption=
绝缘纸聚合度随甲醇含量的变化关系, figureFileSmall=CwEYmHbRUbRg2sRjd/t/Ww==, figureFileBig=H2B7tF74cvaBn6ELeJareg==, tableContent=null), ArticleFig(id=1210913940758990857, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=EN, label=Fig.6, caption=
Relationship between polymerization degree of insulating paper and methanol content, figureFileSmall=DNnDK3jrfRsfWRWGEclT+Q==, figureFileBig=LRP2HFipHazQLpK+jNTh6Q==, tableContent=null), ArticleFig(id=1210913940855459853, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=CN, label=图6, caption=
绝缘纸聚合度与甲醇含量的关系拟合, figureFileSmall=DNnDK3jrfRsfWRWGEclT+Q==, figureFileBig=LRP2HFipHazQLpK+jNTh6Q==, tableContent=null), ArticleFig(id=1210913940968706066, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=EN, label=Tab.1, caption=
Criteria of polymerization degree for transformer paper insulation, figureFileSmall=null, figureFileBig=null, tableContent=
| 绝缘纸聚合度 | >500 | 500~250 | 250~150 | <150 |
|---|
| 诊断结果 | 良好 | 可以运行 | 引起注意 | 退出运行 |
), ArticleFig(id=1210913941069369366, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=CN, label=表1, caption=
变压器纸绝缘聚合度判据
, figureFileSmall=null, figureFileBig=null, tableContent=
| 绝缘纸聚合度 | >500 | 500~250 | 250~150 | <150 |
|---|
| 诊断结果 | 良好 | 可以运行 | 引起注意 | 退出运行 |
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Ageing judgment indexes of transformer insulating paper with different voltage levels, figureFileSmall=null, figureFileBig=null, tableContent=
| 电压等级 | 油纸体积质量比 | 中度老化时对应的甲醇含量/(mg/L) | 深度老化时对应的甲醇含量/(mg/L) |
|---|
| 35 kV | 73∶1 | 1.1 | 2.3 |
| 110 kV | 55∶1 | 1.5 | 3.1 |
| 220 kV | 78∶1 | 1.0 | 2.1 |
| 500 kV | 80∶1 | 1.0 | 2.1 |
), ArticleFig(id=1210913941337804832, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=CN, label=表2, caption=
不同电压等级变压器绝缘纸老化判断指标
, figureFileSmall=null, figureFileBig=null, tableContent=
| 电压等级 | 油纸体积质量比 | 中度老化时对应的甲醇含量/(mg/L) | 深度老化时对应的甲醇含量/(mg/L) |
|---|
| 35 kV | 73∶1 | 1.1 | 2.3 |
| 110 kV | 55∶1 | 1.5 | 3.1 |
| 220 kV | 78∶1 | 1.0 | 2.1 |
| 500 kV | 80∶1 | 1.0 | 2.1 |
), ArticleFig(id=1210913941467828260, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=EN, label=Tab.3, caption=
Evaluation on ageing condition of insulating paper of transformer in operation, figureFileSmall=null, figureFileBig=null, tableContent=
| 电压等级 | 变压器数量/台 | 甲醇含量/(mg/L) | 老化状况 |
|---|
| 35 kV | 47 | 最小值:0.074 最大值:1.532 | 中度老化:8台 深度老化:无 |
| 110 kV | 45 | 最小值:0.014 最大值:1.719 | 中度老化:1台 深度老化:无 |
| 220 kV | 37 | 最小值:0.025 最大值:1.108 | 中度老化:1台 深度老化:无 |
| 500 kV | 28 | 最小值:0.008 最大值:0.134 | 中度老化:无 深度老化:无 |
), ArticleFig(id=1210913941576880168, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227964638262030, language=CN, label=表3, caption=
在运变压器绝缘纸老化状况评估
, figureFileSmall=null, figureFileBig=null, tableContent=
| 电压等级 | 变压器数量/台 | 甲醇含量/(mg/L) | 老化状况 |
|---|
| 35 kV | 47 | 最小值:0.074 最大值:1.532 | 中度老化:8台 深度老化:无 |
| 110 kV | 45 | 最小值:0.014 最大值:1.719 | 中度老化:1台 深度老化:无 |
| 220 kV | 37 | 最小值:0.025 最大值:1.108 | 中度老化:1台 深度老化:无 |
| 500 kV | 28 | 最小值:0.008 最大值:0.134 | 中度老化:无 深度老化:无 |
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