Temperature Rise Characteristics of UHV AC Composite Insulators under Type Fault Conditions

Temperature Rise Characteristics of UHV AC Composite Insulators under Type Fault Conditions | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Temperature Rise Characteristics of UHV AC Composite Insulators under Type Fault Conditions Xuechun Han, Hengdong Song, Song Gao, Junqin Yan, Xingyu Huang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9007066/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 6 You are reading this latest preprint version Abstract The causes of local abnormal temperature rise in composite insulators for transmission lines are complex and difficult to distinguish. To address the fault types inducing abnormal temperature rise in composite insulators, tests on the live temperature rise characteristics of composite insulators under typical fault conditions were carried out in the large-scale environmental climate chamber of the UHVAC Test Laboratory. The temperature rise patterns under typical fault conditions, such as grading ring deflection angle/insertion depth, umbrella skirt damage, surface contamination, and sheath-core rod interface damage, were obtained.The results indicate that: when the grading ring deflection angle increases to 20°, the temperature at the high-voltage end increases by 6.6% compared with the normal condition; when the grading ring insertion depth decreases by 300 mm, the maximum temperature increases by 9.3% relative to the normal condition; under the condition of grading ring absence, the maximum temperature rises by 17.3% compared with the normal condition; in the case of umbrella skirt damage, there is an approximate temperature rise of 2K to 3K at the damaged site; when the surface is contaminated, the temperature rise is approximately 1K; when the sheath-core rod interface is damaged, a continuous and obvious temperature rise appears at the faulty location.The research findings can provide a reference for the study of discrimination methods for abnormal heating fault types of composite insulators. UHV Composite insulator Grading ring Shed Surface pollution Interface defect Electric field Temperature rise characteristics Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Reviewers agreed at journal 05 Apr, 2026 Reviewers agreed at journal 04 Apr, 2026 Reviewers invited by journal 02 Apr, 2026 Editor assigned by journal 18 Mar, 2026 Submission checks completed at journal 16 Mar, 2026 First submitted to journal 16 Mar, 2026 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-9007066","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":617835643,"identity":"b80eb792-b6ad-4d3e-964d-ea168b943bbf","order_by":0,"name":"Xuechun Han","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA1ElEQVRIiWNgGAWjYBACAzhLAog/GNjYkaaFcUZBWjJpWph5PhxibCCkxZz97AFm3jYbBv7ZPWaPbQwOMDOwHz66AZ8Wy568BMaZbWkMEnfOmBvnGNzhY+BJS7uB12EHcgwYPrYdZjCQyDGTzjF4xswgwWOGX8v5NwYMiW3/IVosDA4zNhDUcgNsywGIFgbitLwxYJxxLplB4kZamWSPQVoyG0G/nM8xYOYps2Pgn5G8TeLHHxs7fvbDx/BqAQL2H0CivgHGZSOgfBSMglEwCkYBEQAAJ/9Cc1qLlKkAAAAASUVORK5CYII=","orcid":"","institution":"State Grid Corporation of China (China)","correspondingAuthor":true,"prefix":"","firstName":"Xuechun","middleName":"","lastName":"Han","suffix":""},{"id":617835644,"identity":"0453893f-ee8b-431e-9d01-8ab30b9426e2","order_by":1,"name":"Hengdong Song","email":"","orcid":"","institution":"State Grid Corporation of China (China)","correspondingAuthor":false,"prefix":"","firstName":"Hengdong","middleName":"","lastName":"Song","suffix":""},{"id":617835645,"identity":"c56d02ce-1b19-435b-952f-b9a179c10f53","order_by":2,"name":"Song Gao","email":"","orcid":"","institution":"State Grid Corporation of China (China)","correspondingAuthor":false,"prefix":"","firstName":"Song","middleName":"","lastName":"Gao","suffix":""},{"id":617835646,"identity":"c886b74a-ed5e-46cb-884c-905b4726b4f8","order_by":3,"name":"Junqin Yan","email":"","orcid":"","institution":"State Grid Corporation of China (China)","correspondingAuthor":false,"prefix":"","firstName":"Junqin","middleName":"","lastName":"Yan","suffix":""},{"id":617835647,"identity":"7061cb35-1431-43c8-b4cb-b32b13a91f6f","order_by":4,"name":"Xingyu Huang","email":"","orcid":"","institution":"State Grid Corporation of China (China)","correspondingAuthor":false,"prefix":"","firstName":"Xingyu","middleName":"","lastName":"Huang","suffix":""}],"badges":[],"createdAt":"2026-03-02 07:40:06","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-9007066/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-9007066/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":106404083,"identity":"3965245a-626f-4769-93f1-f78cfa87b646","added_by":"auto","created_at":"2026-04-08 09:15:27","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":662356,"visible":true,"origin":"","legend":"","description":"","filename":"TemperatureRiseCharacteristicsofUHVACCompositeInsulatorsunderTypeFaultConditionsV2.pdf","url":"https://assets-eu.researchsquare.com/files/rs-9007066/v1_covered_00a36a8e-931a-4166-b8fd-8b6652ad3f4f.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Temperature Rise Characteristics of UHV AC Composite Insulators under Type Fault Conditions","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"discover-applied-sciences","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"Learn more about [Discover Applied Sciences](https://link.springer.com/journal/42452)","snPcode":"42452","submissionUrl":"https://submission.springernature.com/new-submission/42452/3","title":"Discover Applied Sciences","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Discover Series","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"UHV, Composite insulator, Grading ring, Shed, Surface pollution, Interface defect, Electric field, Temperature rise characteristics","lastPublishedDoi":"10.21203/rs.3.rs-9007066/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-9007066/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe causes of local abnormal temperature rise in composite insulators for transmission lines are complex and difficult to distinguish. To address the fault types inducing abnormal temperature rise in composite insulators, tests on the live temperature rise characteristics of composite insulators under typical fault conditions were carried out in the large-scale environmental climate chamber of the UHVAC Test Laboratory. 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