Article(id=1198667706904969605, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1198667701179740314, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2023.05.014, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1649865600000, receivedDateStr=2022-04-14, revisedDate=1654444800000, revisedDateStr=2022-06-06, acceptedDate=null, acceptedDateStr=null, onlineDate=1763714251495, onlineDateStr=2025-11-21, pubDate=1684512000000, pubDateStr=2023-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763714251495, onlineIssueDateStr=2025-11-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763714251495, creator=13701087609, updateTime=1763714251495, updator=13701087609, issue=Issue{id=1198667701179740314, tenantId=1146029695717560320, journalId=1149653034449285133, year='2023', volume='56', issue='5', pageStart='1', pageEnd='113', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763714250130, creator=13701087609, updateTime=1766563551357, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1210618536771318327, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1198667701179740314, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1210618536771318328, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1198667701179740314, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=88, endPage=94, ext={EN=ArticleExt(id=1198667707206959509, articleId=1198667706904969605, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Effect of sand covering on surface electric field and potential distributions of 110 kV porcelain insulator, columnId=1192878364340924664, journalTitle=Insulating Materials, columnName=Test and Analysis, runingTitle=null, highlight=null, articleAbstract=
In order to study the influence of sand covering at the umbrella skirt of porcelain insulator on the surface electric field and potential distribution, a two-dimensional symmetric electrostatic field model of XP-70 porcelain suspension insulator was established based on the finite element method, and the surface electric field and potential distribution of the insulator under different sand covering conditions were analyzed. The results show that the surface electric field of porcelain insulator shows U-shape distribution, and the electric field and potential are affected by the geometry of porcelain insulator and the medium material. There is a local peak of electric field strength at the junction point between the upper and lower surfaces of the umbrella skirt of each insulator and the fittings. When the insulator umbrella skirt surface is covered with sand, there is a weak effect on the its surface potential, but the field strength at the sand cover of umbrella skirt will decrease, and the field strength decrease amplitude of the insulators near the high voltage side and the low voltage side is greater. The decrease amplitude is not related to the sand layer thickness. With the increase of sand layer thickness on insulator surface, the field strength at the junction between the upper surface of each insulator umbrella skirt and the fittings will increase greatly at first and then decrease to a stable value. When there is no sand belt in the sand layer, the field strength at the no sand belt increases, and the increase amplitude is related to the sand layer thickness and the width of no sand belt.
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为了研究瓷绝缘子伞裙处覆沙对其沿面电场和电位分布的影响,基于有限元法建立了XP-70型瓷质悬式绝缘子的二维对称静电场模型,并分析了在不同覆沙情况下绝缘子的沿面电场和电位分布。结果表明:瓷绝缘子的沿面电场整体呈“U”形分布,且电场与电位受瓷绝缘子几何形状与媒介材质的影响,在每片绝缘子的伞裙上下表面与金具的交界处,电场强度出现局部峰值;当绝缘子伞裙表面覆盖沙尘时,对其沿面电位的影响十分微弱,但伞裙覆沙处的场强会减小,靠近高压侧与低压侧的绝缘子场强减小幅度较大,且减小幅度与沙层厚度无关,随着绝缘子表面覆盖沙层厚度的增加,每片绝缘子伞裙上表面与金具交界处的场强都会先大幅增大然后减小到一个稳定值;当沙层中出现无沙带时,无沙带处的场强会增大,且增幅与沙层的厚度和无沙带的宽度相关。
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杨国华(1972-),男(汉族),宁夏中卫人,教授,主要从事新能源电力系统自动化技术的研究。
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李彦昭(1999-),男(汉族),宁夏银川人,硕士生,主要从事电工与绝缘技术的研究。
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1宁夏大学 电子与电气工程学院,宁夏 银川 750021, bio={"content":"
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李彦昭(1999-),男(汉族),宁夏银川人,硕士生,主要从事电工与绝缘技术的研究。
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Electric field and potential distribution of insulator in a clean environment, figureFileSmall=Fknll0l+dAI87zlpM28nhg==, figureFileBig=Cu4BS0uYmw1zc8gMkoYTkw==, tableContent=null), ArticleFig(id=1210986423923110717, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图2, caption=
清洁环境下绝缘子电场和电位分布, figureFileSmall=Fknll0l+dAI87zlpM28nhg==, figureFileBig=Cu4BS0uYmw1zc8gMkoYTkw==, tableContent=null), ArticleFig(id=1210986424019579713, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.3, caption=
Surface potential and electric field of insulator in a clean environment, figureFileSmall=swk/UtJ4T3lGMgzsRyt/bQ==, figureFileBig=E9oLMgNM/KCaIacurM8phA==, tableContent=null), ArticleFig(id=1210986424095077187, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图3, caption=
清洁环境下绝缘子沿面电位和电场, figureFileSmall=swk/UtJ4T3lGMgzsRyt/bQ==, figureFileBig=E9oLMgNM/KCaIacurM8phA==, tableContent=null), ArticleFig(id=1210986424149603140, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.4, caption=
Surface position junction on No.4 insulator, figureFileSmall=/HkAWUH0rx8MCt2OHZp1Mw==, figureFileBig=ezE0PtYSstPIVES9zAqy4Q==, tableContent=null), ArticleFig(id=1210986424212517703, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图4, caption=
4号绝缘子表面位置结点, figureFileSmall=/HkAWUH0rx8MCt2OHZp1Mw==, figureFileBig=ezE0PtYSstPIVES9zAqy4Q==, tableContent=null), ArticleFig(id=1210986424338346829, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.5, caption=
Surface potential and electric field distribution of No.4 insulator, figureFileSmall=6kdhuhWtIifqviVTpO/N6w==, figureFileBig=Xqn+vV/PcULWM42kBkGT0g==, tableContent=null), ArticleFig(id=1210986424418038611, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图5, caption=
4号绝缘子沿面电位和电场分布, figureFileSmall=6kdhuhWtIifqviVTpO/N6w==, figureFileBig=Xqn+vV/PcULWM42kBkGT0g==, tableContent=null), ArticleFig(id=1210986424514507606, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.6, caption=
Schematic diagram of umbrella skirt covered with sand, figureFileSmall=i9mtat7F2BwoXYllvF8i7g==, figureFileBig=jnl8v6Y+c9xSE/JqzZw2pg==, tableContent=null), ArticleFig(id=1210986424619365207, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图6, caption=
伞裙覆沙示意图, figureFileSmall=i9mtat7F2BwoXYllvF8i7g==, figureFileBig=jnl8v6Y+c9xSE/JqzZw2pg==, tableContent=null), ArticleFig(id=1210986424715834204, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.7, caption=
Surface potential and electric field distribution at the sand cover of No.1-7 insulators, figureFileSmall=LQoXroYFNChPyBOmmITdfw==, figureFileBig=oeYfxwkOAWKWJnjAihbcUw==, tableContent=null), ArticleFig(id=1210986424799720286, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图7, caption=
1~7号绝缘子覆沙处的表面电位和电场分布, figureFileSmall=LQoXroYFNChPyBOmmITdfw==, figureFileBig=oeYfxwkOAWKWJnjAihbcUw==, tableContent=null), ArticleFig(id=1210986424871023456, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.8, caption=
The b and c points of No.1-7 insulators, figureFileSmall=EO1ybwqwXNjHLllXkSML3g==, figureFileBig=68rU5ykdnVh0xkVXnZ5egg==, tableContent=null), ArticleFig(id=1210986424954909536, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图8, caption=
1~7号绝缘子的b、c点, figureFileSmall=EO1ybwqwXNjHLllXkSML3g==, figureFileBig=68rU5ykdnVh0xkVXnZ5egg==, tableContent=null), ArticleFig(id=1210986425034601316, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.9, caption=
Change laws of the electric field at c and b points of insulator, figureFileSmall=F+ViLi1L877kjIWbFvA9cg==, figureFileBig=SjG5hEwuMoKQ1Cgb6pgQlw==, tableContent=null), ArticleFig(id=1210986425126876006, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图9, caption=
绝缘子c、b点的电场变化规律, figureFileSmall=F+ViLi1L877kjIWbFvA9cg==, figureFileBig=SjG5hEwuMoKQ1Cgb6pgQlw==, tableContent=null), ArticleFig(id=1210986425206567784, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.10, caption=
No sand belt rendering, figureFileSmall=Mt+ZTRpsBoK95oM6/+igkw==, figureFileBig=jg1j1/u3vLja9rU9rSisdw==, tableContent=null), ArticleFig(id=1210986425273676650, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图10, caption=
无沙带效果图, figureFileSmall=Mt+ZTRpsBoK95oM6/+igkw==, figureFileBig=jg1j1/u3vLja9rU9rSisdw==, tableContent=null), ArticleFig(id=1210986425332396908, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.11, caption=
Electric field distributions of No.1-7 insulator upper surface when the sand layer is with or without sand belt, figureFileSmall=jB4aulDd/tgiEISvlvFGGg==, figureFileBig=F2M5r57HhcTaNNrg5SaZqQ==, tableContent=null), ArticleFig(id=1210986425407894383, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图11, caption=
沙层有无沙带时1~7号绝缘子上表面的电场分布, figureFileSmall=jB4aulDd/tgiEISvlvFGGg==, figureFileBig=F2M5r57HhcTaNNrg5SaZqQ==, tableContent=null), ArticleFig(id=1210986425500169075, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.12, caption=
Electric field distributions of No.1-7 insulator lower surface when the sand layer is with or without sand belt, figureFileSmall=04bQF8JGyXGnbSrkX7p6gg==, figureFileBig=NbP5L6BhXxPRMO0mSs0U2Q==, tableContent=null), ArticleFig(id=1210986426712322930, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图12, caption=
沙层有无沙带时1~7号绝缘子下表面的电场分布, figureFileSmall=04bQF8JGyXGnbSrkX7p6gg==, figureFileBig=NbP5L6BhXxPRMO0mSs0U2Q==, tableContent=null), ArticleFig(id=1210986426783626100, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Fig.13, caption=
Electric field distribution at the no sand belt of No.6 insulator, figureFileSmall=/PBOyfh/6MkTRnXRbbhyCA==, figureFileBig=ZmY85oH5qRpBJ1Z2kRDG/A==, tableContent=null), ArticleFig(id=1210986426846540661, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=图13, caption=
6号绝缘子无沙带处电场分布, figureFileSmall=/PBOyfh/6MkTRnXRbbhyCA==, figureFileBig=ZmY85oH5qRpBJ1Z2kRDG/A==, tableContent=null), ArticleFig(id=1210986426943009654, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=EN, label=Tab.1, caption=
Relative dielectric constant setting, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 空气 | 电瓷 | 铸铁 | 沙 |
|---|
| 相对介电常数 | 1 | 6 | 10×1010 | 3.5 |
), ArticleFig(id=1210986427031090040, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1198667706904969605, language=CN, label=表1, caption=
相对介电常数设置
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 空气 | 电瓷 | 铸铁 | 沙 |
|---|
| 相对介电常数 | 1 | 6 | 10×1010 | 3.5 |
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