Article(id=1210227967947568014, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1210227961236681448, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2022.01.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1615132800000, receivedDateStr=2021-03-08, revisedDate=1618848000000, revisedDateStr=2021-04-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1766470432506, onlineDateStr=2025-12-23, pubDate=1642608000000, pubDateStr=2022-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1766470432506, onlineIssueDateStr=2025-12-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1766470432506, creator=13701087609, updateTime=1766470432506, updator=13701087609, issue=Issue{id=1210227961236681448, tenantId=1146029695717560320, journalId=1149653034449285133, year='2022', volume='55', issue='1', pageStart='1', pageEnd='112', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1766470430907, creator=13701087609, updateTime=1766562962621, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1210616067429364090, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1210227961236681448, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1210616067429364091, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1210227961236681448, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=62, endPage=66, ext={EN=ArticleExt(id=1210227968962589610, articleId=1210227967947568014, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Study on Retrofill Mineral Insulating Oil Transformer with Two Kinds of Ester Insulating Oils, columnId=1190369198472794288, journalTitle=Insulating Materials, columnName=Insulation Technology, runingTitle=null, highlight=null, articleAbstract=
This paper mainly studied the feasibility of retrofilling traditional mineral oil transformer with ester insulating oil, including natural ester and mono-ester insulating oil. At first, two kinds of ester insulating oil were mixed with mineral oil, respectively, and their electrical and physicochemical characteristics were studied. On this basis, two 10 kV mineral oil transformers were retrofilled with two kinds of ester insulating oil, respectively, and the overall characteristics of the transformers before and after retrofilling were tested. The results show that after using the mono-ester insulating oil to retrofill the mineral oil transformer, the temperature rise of the transformer decreases, the capacitance to ground increases, and the insulation resistance decreases. After using the ester insulating oil to retrofill the mineral oil transformer, the temperature rise of the transformer increases, the capacitance to ground increases, and the insulation resistance decreases. It is feasible to retrofill mineral oil transformer with two kings of ester insulating oils, and using the mono-ester insulating oil to retrofill the old mineral oil transformer can improve its heat dissipation capacity. However, it should pay attention to the reduction of transformer insulation resistance after retrofilling the mono-ester insulating oil.
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本文主要研究了传统矿物油变压器注换酯类绝缘油包括天然酯及单酯绝缘油的可行性问题,首先研究了两种酯类绝缘油与矿物油混合后的常规电气、理化特性,在此基础上,分别使用两种酯类绝缘油对两台10 kV矿物油变压器进行注换,并测试注换前后变压器的整体特性。结果表明:使用单酯绝缘油注换矿物油变压器后,变压器的温升有所降低,对地电容提高且绝缘电阻下降;使用天然酯绝缘油注换矿物油变压器后,变压器的温升有所提高,对地电容提高且绝缘电阻下降。使用两类酯类绝缘油注换老旧矿物油变压器均具备可行性,且使用单酯绝缘油进行注换可提高变压器的散热能力,但应注意注换单酯绝缘油后变压器绝缘电阻的降低。
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卢兆军(1975-),男(汉族),山东广饶人,高级经济师,主要从事电力系统和电力设备的相关研究。
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卢兆军(1975-),男(汉族),山东广饶人,高级经济师,主要从事电力系统和电力设备的相关研究。
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卢兆军(1975-),男(汉族),山东广饶人,高级经济师,主要从事电力系统和电力设备的相关研究。
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31(25):125-131., articleTitle=植物绝缘油纸浸渍模型与试验研究, refAbstract=null), Reference(id=1210913941346186016, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, doi=null, pmid=null, pmcid=null, year=2007, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[7], rfOrder=6, authorNames=路长柏, journalName=电力变压器理论与计算, refType=null, unstructuredReference=路长柏.
电力变压器理论与计算[M].沈阳:辽宁科学技术出版社,
2007., articleTitle=null, refAbstract=null), Reference(id=1210913941480403745, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, doi=null, pmid=null, pmcid=null, year=2013, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[8], rfOrder=7, authorNames=赵峰, journalName=null, refType=null, unstructuredReference=赵峰.特高压变压器的主绝缘设计研究[D].北京:华北电力大学,
2013., articleTitle=特高压变压器的主绝缘设计研究, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1210913933993570809, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, xref=null, ext=[AuthorCompanyExt(id=1210913934001959415, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, companyId=1210913933993570809, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=State Grid Shandong Electric Power Company, Jinan 264000, China), AuthorCompanyExt(id=1210913934010348025, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, companyId=1210913933993570809, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=国网山东省电力公司,山东 济南 264000)])], figs=[ArticleFig(id=1210913938552779418, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=EN, label=Fig.1, caption=
Change trends of breakdown voltage of mixed oil with the content of ester insulating oil, figureFileSmall=f3GjjbXdIhVin8zzJ2lQrA==, figureFileBig=548Oi++68z70ncJUVupeMw==, tableContent=null), ArticleFig(id=1210913938649248417, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=CN, label=图1, caption=
混合油击穿电压随酯类绝缘油含量的变化趋势, figureFileSmall=f3GjjbXdIhVin8zzJ2lQrA==, figureFileBig=548Oi++68z70ncJUVupeMw==, tableContent=null), ArticleFig(id=1210913938758300327, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=EN, label=Fig.2, caption=
Change trends of volume resistivity of mixed oil with the content of ester insulating oil, figureFileSmall=QJ47Vm4H//DiqQBnV7ipbQ==, figureFileBig=iefMHiUvPKyaQ5RPOtDuOQ==, tableContent=null), ArticleFig(id=1210913938896712363, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=CN, label=图2, caption=
混合油体积电阻率随酯类绝缘油含量的变化趋势, figureFileSmall=QJ47Vm4H//DiqQBnV7ipbQ==, figureFileBig=iefMHiUvPKyaQ5RPOtDuOQ==, tableContent=null), ArticleFig(id=1210913938972209841, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=EN, label=Fig.3, caption=
Change trends of kinematic viscosity of mixed oil with the content of ester insulating oil at 40℃, figureFileSmall=iFKi2ZV/2c6iz+A1IBiOHA==, figureFileBig=kGLPND2frHmiIs0faKj0Kw==, tableContent=null), ArticleFig(id=1210913939081261753, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=CN, label=图3, caption=
混合油在40℃下运动黏度随酯类绝缘油含量的变化趋势, figureFileSmall=iFKi2ZV/2c6iz+A1IBiOHA==, figureFileBig=kGLPND2frHmiIs0faKj0Kw==, tableContent=null), ArticleFig(id=1210913939186119359, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=EN, label=Fig.4, caption=
Change trends of fire point of mixed oil with the content of ester insulating oil, figureFileSmall=ih3Ll71WNNYyKCQU167ofg==, figureFileBig=Tsj3MacRq3ZOGdp/PQHoWw==, tableContent=null), ArticleFig(id=1210913939286782662, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=CN, label=图4, caption=
混合油燃点随酯类绝缘油含量的变化趋势, figureFileSmall=ih3Ll71WNNYyKCQU167ofg==, figureFileBig=Tsj3MacRq3ZOGdp/PQHoWw==, tableContent=null), ArticleFig(id=1210913939379057355, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=EN, label=Fig.5, caption=
Winding temperature rise of the transformers with mineral oil, DL-7 oil, and RAPO oils under different load rates, figureFileSmall=qBjLYUwBZE/e4FZXa0BMNw==, figureFileBig=hbpfHl2uOeKO9gnyO3K8wA==, tableContent=null), ArticleFig(id=1210913939471332049, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=CN, label=图5, caption=
矿物油、DL-7油、RAPO油变压器在不同负荷率下的绕组温升, figureFileSmall=qBjLYUwBZE/e4FZXa0BMNw==, figureFileBig=hbpfHl2uOeKO9gnyO3K8wA==, tableContent=null), ArticleFig(id=1210913939584578263, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=EN, label=Tab.1, caption=
Conventional electrical and physicochemical properties of three insulating oils, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | DL-7 | RAPO | 矿物油 |
|---|
| 密度(20℃)/(g/cm3) | 0.86 | 0.93 | 0.88 |
| 运动黏度(40℃)/(mm2/s) | 5.1 | 32.9 | 8.1 |
| 开口闪点/℃ | 186 | 330 | 156 |
| 倾点/℃ | -32.5 | -20 | -35 |
| 酸值/(mgKOH/g) | 0.006 | 0.025 | <0.01 |
| 水含量/(mg/kg) | 15 | 33 | <10 |
| 相对介电常数(90℃) | 2.95 | 3.1 | 2.2 |
| 体积电阻率(90℃)/(Ω·m) | 1.4×1010 | 1.7×1010 | 4.3×1011 |
| 击穿电压(2.5mm)/kV | 81 | 75 | 72 |
), ArticleFig(id=1210913939689435868, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=CN, label=表1, caption=
3种绝缘油的常规电气理化特性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | DL-7 | RAPO | 矿物油 |
|---|
| 密度(20℃)/(g/cm3) | 0.86 | 0.93 | 0.88 |
| 运动黏度(40℃)/(mm2/s) | 5.1 | 32.9 | 8.1 |
| 开口闪点/℃ | 186 | 330 | 156 |
| 倾点/℃ | -32.5 | -20 | -35 |
| 酸值/(mgKOH/g) | 0.006 | 0.025 | <0.01 |
| 水含量/(mg/kg) | 15 | 33 | <10 |
| 相对介电常数(90℃) | 2.95 | 3.1 | 2.2 |
| 体积电阻率(90℃)/(Ω·m) | 1.4×1010 | 1.7×1010 | 4.3×1011 |
| 击穿电压(2.5mm)/kV | 81 | 75 | 72 |
), ArticleFig(id=1210913939811070688, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=EN, label=Tab.2, caption=
Parameters of S13-200/10 product, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 容量 | 200 kVA |
| 相数 | 3相 |
| 频率 | 50 Hz |
| 电压比 | 10 kV±2×2.5%/0.4 kV |
| 冷却方式 | 自然油循环冷却 |
| 绝缘油重 | 165 kg |
), ArticleFig(id=1210913939928511208, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=CN, label=表2, caption=
S13-200/10型产品参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 数值 |
|---|
| 容量 | 200 kVA |
| 相数 | 3相 |
| 频率 | 50 Hz |
| 电压比 | 10 kV±2×2.5%/0.4 kV |
| 冷却方式 | 自然油循环冷却 |
| 绝缘油重 | 165 kg |
), ArticleFig(id=1210913940045951724, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=EN, label=Tab.3, caption=
Electrical, physical, and chemical characteristics of insulating oil before and after retrofill transformer oil, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 换油前 | 换DL-7油后 | 换RAPO油后 |
|---|
| 油中含水量/(mg/kg) | 15 | 47 | 42 |
| 酸值/(mgKOH/g) | 0.012 | 0.012 | 0.024 |
| 体积电阻率(90℃)/(×1011Ω·m) | 4.3 | 2.1 | 2.4 |
| 击穿电压(2.5mm)/kV | 68 | 73 | 75 |
), ArticleFig(id=1210913940196946678, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=CN, label=表3, caption=
变压器注换前后的绝缘油电气、理化特性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 换油前 | 换DL-7油后 | 换RAPO油后 |
|---|
| 油中含水量/(mg/kg) | 15 | 47 | 42 |
| 酸值/(mgKOH/g) | 0.012 | 0.012 | 0.024 |
| 体积电阻率(90℃)/(×1011Ω·m) | 4.3 | 2.1 | 2.4 |
| 击穿电压(2.5mm)/kV | 68 | 73 | 75 |
), ArticleFig(id=1210913940310192890, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=EN, label=Tab.4, caption=
Test results of SW13-200/10 transformer after refill, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验项目 | 换DL-7油前后的变化/% | 换RAPO油前后的变化/% | 备注 |
|---|
| 短路阻抗 | -0.3 | 0.2 | 与出厂试验值比较 |
| 电压比 | 0.0(HV-LV) | 0.0(HV-LV) | 与出厂试验值比较 |
| 绕组电阻 | -0.5 | -0.3 | — |
| 负载损耗 | 0.2 | 0.0 | — |
| 空载损耗 | 0.0 | 0.0 | — |
| 工频耐压 | 合格 | 合格 | — |
| 感应试验 | 合格 | 合格 | — |
| 绕组对地电容 | 16.4 | 19.7 | HL-E |
| 绝缘电阻 | -67.6 | -73.6 | HL-E |
| 温升试验 | -1.8 | 4.7 | 最高油温 |
| 绝缘油试验 | 未见异常 | 未见异常 | — |
), ArticleFig(id=1210913940410856190, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210227967947568014, language=CN, label=表4, caption=
SW13-200/10变压器换油后的试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验项目 | 换DL-7油前后的变化/% | 换RAPO油前后的变化/% | 备注 |
|---|
| 短路阻抗 | -0.3 | 0.2 | 与出厂试验值比较 |
| 电压比 | 0.0(HV-LV) | 0.0(HV-LV) | 与出厂试验值比较 |
| 绕组电阻 | -0.5 | -0.3 | — |
| 负载损耗 | 0.2 | 0.0 | — |
| 空载损耗 | 0.0 | 0.0 | — |
| 工频耐压 | 合格 | 合格 | — |
| 感应试验 | 合格 | 合格 | — |
| 绕组对地电容 | 16.4 | 19.7 | HL-E |
| 绝缘电阻 | -67.6 | -73.6 | HL-E |
| 温升试验 | -1.8 | 4.7 | 最高油温 |
| 绝缘油试验 | 未见异常 | 未见异常 | — |
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