Article(id=1198662252476854410, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1198662245069713420, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2023.01.010, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1639929600000, receivedDateStr=2021-12-20, revisedDate=1643212800000, revisedDateStr=2022-01-27, acceptedDate=null, acceptedDateStr=null, onlineDate=1763712951058, onlineDateStr=2025-11-21, pubDate=1674144000000, pubDateStr=2023-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763712951058, onlineIssueDateStr=2025-11-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763712951058, creator=13701087609, updateTime=1763712951058, updator=13701087609, issue=Issue{id=1198662245069713420, tenantId=1146029695717560320, journalId=1149653034449285133, year='2023', volume='56', issue='1', pageStart='1', pageEnd='114', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763712949292, creator=13701087609, updateTime=1766563309216, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1210617521154159057, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1198662245069713420, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1210617521154159058, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1198662245069713420, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=62, endPage=69, ext={EN=ArticleExt(id=1198662252837564579, articleId=1198662252476854410, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Influence of natural ester insulating oil on main and longitudinal insulation strength of 110 kV power transformer, columnId=1190369198472794288, journalTitle=Insulating Materials, columnName=Insulation Technology, runingTitle=null, highlight=null, articleAbstract=
In order to analyze the influence of natural ester insulating oil on the insulating properties of power transformers, at first, the winding wave processes of a 110 kV natural ester insulating oil and a mineral insulating oil power transformers with the same insulation structure were calculated, and the longitudinal insulation margins of the two transformers were obtained. And then, the winding potential with linear distribution under power frequency and the nonlinear winding potential calculated by wave process were used as excitation sources respectively, the composite electric field of the two insulating oil transformers main insulation were simulated, and their distribution characteristics were compared and analyzed. At last, the main insulation margins of the two insulating oil transformers were calculated by using the whole-region electric flux line scanning method, and in view of the weak main insulation strength of natural ester insulating oil transformer, the structure was improved and the improvement effect was analyzed. The results show that through adding insulation paper boards and adjusting the size of oil ducts, the minimum insulation margin of the improved natural ester insulating oil transformer increases by 15.8%, which meets the requirements of main insulation strength, which provides a reference for developing large natural ester insulating oil transformer and optimizing its structure.
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为了分析天然酯绝缘油对电力变压器绝缘性能的影响,首先分别对相同绝缘结构的110 kV天然酯绝缘油与矿物绝缘油电力变压器进行绕组波过程计算,得到两种变压器的纵绝缘裕度。然后分别以工频下线性分布的绕组电位和波过程计算出的非线性绕组电位为激励,对两种绝缘油变压器主绝缘的复合电场进行仿真计算,并对其分布特性进行对比分析。最后运用全域电力线扫描法计算了两种绝缘油变压器的主绝缘裕度,并针对天然酯绝缘油变压器主绝缘强度薄弱的问题进行了结构改进与效果分析。结果表明:通过增设绝缘纸筒及调整油隙尺寸,改进后的天然酯绝缘油变压器最小绝缘裕度提高了15.8%,满足了主绝缘强度要求,为开发大型天然酯绝缘油变压器及结构优化提供了参考依据。
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王建民(1961-),男(汉族),河北保定人,教授级高级工程师,主要从事各类变压器及电抗器等产品的电磁热力关键技术研究。
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1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
2Key Laboratory of Electro-magnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China
3Hebei Province Key Laboratory of Electromagnetic and Structural Performance of Power Transmission and Transformation Equipment, Baoding Tianwei Baobian Electric Co., Ltd., Baoding 071056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1210916728897401079, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, authorId=1210916728696074473, language=CN, stringName=王建民, firstName=建民, middleName=null, lastName=王, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1河北工业大学,省部共建电工装备可靠性与智能化国家重点实验室,天津 300130
2河北工业大学,河北省电磁场与电器可靠性 重点实验室,天津 300130
3保定天威保变电气股份有限公司 河北省输变电装备电磁与结构性能 重点实验室,河北 保定 071056, bio={"content":"
王建民(1961-),男(汉族),河北保定人,教授级高级工程师,主要从事各类变压器及电抗器等产品的电磁热力关键技术研究。
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王建民(1961-),男(汉族),河北保定人,教授级高级工程师,主要从事各类变压器及电抗器等产品的电磁热力关键技术研究。
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3保定天威保变电气股份有限公司 河北省输变电装备电磁与结构性能 重点实验室,河北 保定 071056)])]), Author(id=1210916729006452988, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1210916729119699206, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, authorId=1210916729006452988, language=EN, stringName=Dongxu YU, firstName=Dongxu, middleName=null, lastName=YU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
2Key Laboratory of Electro-magnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1210916729220362508, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, authorId=1210916729006452988, language=CN, stringName=于东旭, firstName=东旭, middleName=null, lastName=于, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1河北工业大学,省部共建电工装备可靠性与智能化国家重点实验室,天津 300130
2河北工业大学,河北省电磁场与电器可靠性 重点实验室,天津 300130, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1210916728276644046, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, xref=1, ext=[AuthorCompanyExt(id=1210916728285032655, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728276644046, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China), AuthorCompanyExt(id=1210916728297615569, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728276644046, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1河北工业大学,省部共建电工装备可靠性与智能化国家重点实验室,天津 300130)]), AuthorCompany(id=1210916728394084566, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, xref=2, ext=[AuthorCompanyExt(id=1210916728402473175, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728394084566, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Key Laboratory of Electro-magnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China), AuthorCompanyExt(id=1210916728406667481, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728394084566, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2河北工业大学,河北省电磁场与电器可靠性 重点实验室,天津 300130)])]), Author(id=1210916729295859985, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1210916729413300508, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, authorId=1210916729295859985, language=EN, stringName=Haoming WANG, firstName=Haoming, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 4, address=
1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China
2Key Laboratory of Electro-magnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China
4Department of Power Engineering, North China Electric Power University, Baoding 071003, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1210916729497186592, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, authorId=1210916729295859985, language=CN, stringName=王浩名, firstName=浩名, middleName=null, lastName=王, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, 4, address=
1河北工业大学,省部共建电工装备可靠性与智能化国家重点实验室,天津 300130
2河北工业大学,河北省电磁场与电器可靠性 重点实验室,天津 300130
4华北电力大学(保定) 电力工程系,河北 保定 071003, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1210916728276644046, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, xref=1, ext=[AuthorCompanyExt(id=1210916728285032655, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728276644046, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China), AuthorCompanyExt(id=1210916728297615569, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728276644046, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1河北工业大学,省部共建电工装备可靠性与智能化国家重点实验室,天津 300130)]), AuthorCompany(id=1210916728394084566, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, xref=2, ext=[AuthorCompanyExt(id=1210916728402473175, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728394084566, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Key Laboratory of Electro-magnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin 300130, China), AuthorCompanyExt(id=1210916728406667481, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728394084566, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2河北工业大学,河北省电磁场与电器可靠性 重点实验室,天津 300130)]), AuthorCompany(id=1210916728599605478, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, xref=4, ext=[AuthorCompanyExt(id=1210916728607994085, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728599605478, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4Department of Power Engineering, North China Electric Power University, Baoding 071003, China), AuthorCompanyExt(id=1210916728612188391, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728599605478, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4华北电力大学(保定) 电力工程系,河北 保定 071003)])]), Author(id=1210916729606238505, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1210916729711096111, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, authorId=1210916729606238505, language=EN, stringName=Zhenbin DU, firstName=Zhenbin, middleName=null, lastName=DU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3Hebei Province Key Laboratory of Electromagnetic and Structural Performance of Power Transmission and Transformation Equipment, Baoding Tianwei Baobian Electric Co., Ltd., Baoding 071056, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1210916729820148019, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, authorId=1210916729606238505, language=CN, stringName=杜振斌, firstName=振斌, middleName=null, lastName=杜, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3保定天威保变电气股份有限公司 河北省输变电装备电磁与结构性能 重点实验室,河北 保定 071056, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1210916728507330782, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, xref=3, ext=[AuthorCompanyExt(id=1210916728515719393, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728507330782, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3Hebei Province Key Laboratory of Electromagnetic and Structural Performance of Power Transmission and Transformation Equipment, Baoding Tianwei Baobian Electric Co., Ltd., Baoding 071056, China), AuthorCompanyExt(id=1210916728519913696, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728507330782, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3保定天威保变电气股份有限公司 河北省输变电装备电磁与结构性能 重点实验室,河北 保定 071056)]), AuthorCompany(id=1210916728599605478, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, xref=4, ext=[AuthorCompanyExt(id=1210916728607994085, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728599605478, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4Department of Power Engineering, North China Electric Power University, Baoding 071003, China), AuthorCompanyExt(id=1210916728612188391, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, companyId=1210916728599605478, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4华北电力大学(保定) 电力工程系,河北 保定 071003)])], figs=[ArticleFig(id=1210916731841802626, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.1, caption=
Transformer winding equivalent circuit, figureFileSmall=zCiBj1AIw/ERuLLhNdHJDA==, figureFileBig=Fs5b0lUIKaaGTnyt2kMbtQ==, tableContent=null), ArticleFig(id=1210916731955048838, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图1, caption=
变压器绕组等值电路, figureFileSmall=zCiBj1AIw/ERuLLhNdHJDA==, figureFileBig=Fs5b0lUIKaaGTnyt2kMbtQ==, tableContent=null), ArticleFig(id=1210916732147986827, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.2, caption=
Potential distribution of high-voltage winding under full wave impact, figureFileSmall=Ou85FbxSsk08+U1DIIOw6g==, figureFileBig=rtAU1ooV7mK0JQUHyw/2jg==, tableContent=null), ArticleFig(id=1210916732278010254, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图2, caption=
全波冲击下的高压绕组电位分布, figureFileSmall=Ou85FbxSsk08+U1DIIOw6g==, figureFileBig=rtAU1ooV7mK0JQUHyw/2jg==, tableContent=null), ArticleFig(id=1210916732370284943, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.3, caption=
Gradient voltage distribution of high-voltage oil duct under full wave impulse, figureFileSmall=k7rX7OjXmfn11/RzpgM+Pg==, figureFileBig=l8Zxm5r2e8aFcvZV1zLqUw==, tableContent=null), ArticleFig(id=1210916732454171025, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图3, caption=
全波冲击下的高压油道梯度电压分布, figureFileSmall=k7rX7OjXmfn11/RzpgM+Pg==, figureFileBig=l8Zxm5r2e8aFcvZV1zLqUw==, tableContent=null), ArticleFig(id=1210916732529668499, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.4, caption=
Comparison of impulse potential distribution of high-voltage windings for two kinds of insulating oil transformers, figureFileSmall=IEsN/QCHOeyp9YbCQ/BVfg==, figureFileBig=rJYQCfF3WwW3UdDEu+frfA==, tableContent=null), ArticleFig(id=1210916732600971667, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图4, caption=
两种绝缘油变压器高压绕组冲击电位分布的对比, figureFileSmall=IEsN/QCHOeyp9YbCQ/BVfg==, figureFileBig=rJYQCfF3WwW3UdDEu+frfA==, tableContent=null), ArticleFig(id=1210916732676469142, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.5, caption=
Comparison of gradient distribution of high-voltage oil duct for two kinds of insulating oil transformers, figureFileSmall=3Q1+MkJ4Y/JHN9ThivK84w==, figureFileBig=nNtZD6RmShv0zdRIF7IomA==, tableContent=null), ArticleFig(id=1210916732777132445, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图5, caption=
两种绝缘油变压器高压油道梯度分布的对比, figureFileSmall=3Q1+MkJ4Y/JHN9ThivK84w==, figureFileBig=nNtZD6RmShv0zdRIF7IomA==, tableContent=null), ArticleFig(id=1210916732840047008, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.6, caption=
Calculation model of composite electric field of main insulation in transformer upper end, figureFileSmall=xClFUrw2pf+K81uVFpg5ig==, figureFileBig=araW8gtjNPg4PM0GgOPw2A==, tableContent=null), ArticleFig(id=1210916732911350180, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图6, caption=
变压器上端部主绝缘复合电场计算模型, figureFileSmall=xClFUrw2pf+K81uVFpg5ig==, figureFileBig=araW8gtjNPg4PM0GgOPw2A==, tableContent=null), ArticleFig(id=1210916733007819173, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.7, caption=
Equipotential lines and electric field distribution of two kinds of transformers under power frequency, figureFileSmall=u226Bjp6PL4UZBjqj+aBag==, figureFileBig=oKLHwYl8e9UtXX7bke6S9g==, tableContent=null), ArticleFig(id=1210916733100093865, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图7, caption=
工频下两种绝缘油变压器主绝缘的等电位线及电场分布云图, figureFileSmall=u226Bjp6PL4UZBjqj+aBag==, figureFileBig=oKLHwYl8e9UtXX7bke6S9g==, tableContent=null), ArticleFig(id=1210916733192368556, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.8, caption=
Distribution of field strength along electric fluxline between high and low voltage windings end in two kinds of transformers, figureFileSmall=WeZkEK9cA2bi9J7cv0H5Jg==, figureFileBig=lv+SCHapvM6e65adVBhIQA==, tableContent=null), ArticleFig(id=1210916733267866030, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图8, caption=
两种绝缘油变压器高低压绕组端部之间的场强沿电力线的分布, figureFileSmall=WeZkEK9cA2bi9J7cv0H5Jg==, figureFileBig=lv+SCHapvM6e65adVBhIQA==, tableContent=null), ArticleFig(id=1210916733339169203, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.9, caption=
Equipotential lines and electric field distribution under full wave impulse converted to power frequency for 1 minute, figureFileSmall=XP2cfypQUvfVlEFCvhbHDg==, figureFileBig=QWOYI52XmXk04jBBKL1ggw==, tableContent=null), ArticleFig(id=1210916733423055286, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图9, caption=
雷电全波折算到工频1 min下的等电位线及电场分布云图, figureFileSmall=XP2cfypQUvfVlEFCvhbHDg==, figureFileBig=QWOYI52XmXk04jBBKL1ggw==, tableContent=null), ArticleFig(id=1210916733511135674, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.10, caption=
Field strength allowable value, average value, and insulation margin of natural ester insulating oil gap, figureFileSmall=2crh0UxQXUV9+U9iHBCBow==, figureFileBig=cPMph2IhfTIfxcrPmF1HNA==, tableContent=null), ArticleFig(id=1210916733595021759, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图10, caption=
天然酯绝缘油隙的场强许用值、计算平均值和绝缘裕度, figureFileSmall=2crh0UxQXUV9+U9iHBCBow==, figureFileBig=cPMph2IhfTIfxcrPmF1HNA==, tableContent=null), ArticleFig(id=1210916733670519234, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.11, caption=
Electric flux line with minimum insulation margin after improving main insulation structure, figureFileSmall=pQNRWAGdidIcGxQ+b36gUg==, figureFileBig=U0K2+FNEvc5fP/pC2D/png==, tableContent=null), ArticleFig(id=1210916733750211013, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图11, caption=
主绝缘改进后最小绝缘裕度所在电力线示意图, figureFileSmall=pQNRWAGdidIcGxQ+b36gUg==, figureFileBig=U0K2+FNEvc5fP/pC2D/png==, tableContent=null), ArticleFig(id=1210916733884428748, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Fig.12, caption=
Field strength allowable value, average value, and insulation margin of natural ester insulating oil gap after improving main insulation structure, figureFileSmall=I4At5I3rUnl45cmLOIqXDg==, figureFileBig=/tbwlOADy7YyVkQBqkDmMw==, tableContent=null), ArticleFig(id=1210916733976703439, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=图12, caption=
主绝缘改进后天然酯绝缘油隙场强许用值、计算平均值和绝缘裕度, figureFileSmall=I4At5I3rUnl45cmLOIqXDg==, figureFileBig=/tbwlOADy7YyVkQBqkDmMw==, tableContent=null), ArticleFig(id=1210916734043812306, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Tab.1, caption=
Comparison of maximum potential of high-voltage winding and maximum gradient voltage of oil duct, figureFileSmall=null, figureFileBig=null, tableContent=
| 类型 | 天然酯绝缘油变压器 | 矿物绝缘油变压器 |
|---|
| 最大电位与施加冲击电位之比/% | 130.3 | 126.3 |
| 最大电梯度电压与施加冲击电压之比/% | 14.3 | 13.5 |
), ArticleFig(id=1210916734119309780, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=表1, caption=
高压绕组最大电位和油道最大梯度电压的比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类型 | 天然酯绝缘油变压器 | 矿物绝缘油变压器 |
|---|
| 最大电位与施加冲击电位之比/% | 130.3 | 126.3 |
| 最大电梯度电压与施加冲击电压之比/% | 14.3 | 13.5 |
), ArticleFig(id=1210916734194807255, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Tab.2, caption=
Comparison of minimum insulation margin of high-voltage windings for two kinds of insulating oil transformers, figureFileSmall=null, figureFileBig=null, tableContent=
| 类型 | 最大梯度电压与施加冲击电压之比/% | 作用电压/kV | 击穿电压/kV | 绝缘裕度 |
|---|
| 天然酯5号绝缘油道 | 14.3 | 68.6 | 103.6 | 1.51 |
| 矿物油5号绝缘油道 | 13.5 | 64.8 | 103.6 | 1.60 |
), ArticleFig(id=1210916734270304730, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=表2, caption=
两种绝缘油变压器高压绕组最小绝缘裕度的比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 类型 | 最大梯度电压与施加冲击电压之比/% | 作用电压/kV | 击穿电压/kV | 绝缘裕度 |
|---|
| 天然酯5号绝缘油道 | 14.3 | 68.6 | 103.6 | 1.51 |
| 矿物油5号绝缘油道 | 13.5 | 64.8 | 103.6 | 1.60 |
), ArticleFig(id=1210916734366773723, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Tab.3, caption=
Minimum insulation margin of natural ester insulating oil gap, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验类型 | 最小绝缘裕度所在电力线 | 油隙最小绝缘裕度 |
|---|
| 工频 | 高压绕组首端指向低压绕组首端 | 1.25 |
| 雷电全波冲击 | 高压第15饼指向调压绕组上端部 | 0.95 |
), ArticleFig(id=1210916734433882589, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=表3, caption=
天然酯绝缘油隙的最小绝缘裕度
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验类型 | 最小绝缘裕度所在电力线 | 油隙最小绝缘裕度 |
|---|
| 工频 | 高压绕组首端指向低压绕组首端 | 1.25 |
| 雷电全波冲击 | 高压第15饼指向调压绕组上端部 | 0.95 |
), ArticleFig(id=1210916734505185760, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=EN, label=Tab.4, caption=
Minimum insulation margin of mineral insulatingoil gap, figureFileSmall=null, figureFileBig=null, tableContent=
| 电压类型 | 最小绝缘裕度所在电力线 | 油隙最小绝缘裕度 |
|---|
| 工频 | 高压绕组首端指向低压绕组首端 | 1.16 |
| 雷电全波冲击 | 高压第15饼指向调压绕组上端部 | 1.10 |
), ArticleFig(id=1210916734597460451, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198662252476854410, language=CN, label=表4, caption=
矿物绝缘油隙的最小绝缘裕度
, figureFileSmall=null, figureFileBig=null, tableContent=
| 电压类型 | 最小绝缘裕度所在电力线 | 油隙最小绝缘裕度 |
|---|
| 工频 | 高压绕组首端指向低压绕组首端 | 1.16 |
| 雷电全波冲击 | 高压第15饼指向调压绕组上端部 | 1.10 |
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