Research on the Influence of Humidity on the Trichel Pulse Waveform of Coaxial Electrode Negative Corona

Research on the Influence of Humidity on the Trichel Pulse Waveform of Coaxial Electrode Negative Corona | 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 Research on the Influence of Humidity on the Trichel Pulse Waveform of Coaxial Electrode Negative Corona Yuanqing Liu, Zhengshan Zhong, Xiaotian Zhang, Bin Liu This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7617323/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 10 You are reading this latest preprint version Abstract Environmental humidity is one of the important factors affecting corona discharge in transmission lines. Studies have shown that corona loss in transmission lines increases sharply when relative humidity rises. As an important development stage of negative corona discharge in transmission lines, studying the waveform changes under different humidity conditions plays a crucial role in controlling corona discharge in high-voltage direct current transmission lines. The influence of humidity on the corona discharge parameters was calculated using the Wielang approximation, a fluid dynamics model was established, and the negative polarity corona discharge characteristics of the coaxial electrode structure in the air gap under atmospheric pressure were studied, and the Trichel pulse waveforms at different relative humidity were obtained. The electric field intensity and the density distribution characteristics of three types of charged particles (positive ions, electrons and negative ions) in the discharge region at different stages were analyzed and discussed, and the mechanism of variation of the pulse waveform at different relative humidity was presented. Through simulation, it was found that as the relative humidity increased, both the average amplitude and frequency of the discharge pulses increased, and corresponding waveform characteristics appeared in the wire discharge at different relative humidity: when the relative humidity was in the range of 0% to 20%, the wire discharge all appeared in the form of typical Trichel pulses; When the relative humidity was in the range of 20% to 55%, the discharge pulses were accompanied by larger base currents; When the relative humidity is between 55% and 65%, the amplitudes of the discharge pulses alternate in a regular pattern of large and small; When the relative humidity is in the range of 65% to 80%, the descending phase of the larger amplitude pulse is accompanied by a continuous repetition of smaller amplitude pulses; When the relative humidity increases above 80%, the discharge waveform shows a steady current without pulses. The results of this study can provide a theoretical basis for the negative corona discharge waveforms of the air-gap coaxial electrode structure at different humidity levels and provide a reference for the microscopic physical mechanism of corona discharge in transmission lines. Negative Corona Trichel pulse Relative humidity Spatial Electric Field distribution Particle density Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 22 Jan, 2026 Reviews received at journal 22 Jan, 2026 Reviewers agreed at journal 22 Jan, 2026 Reviewers agreed at journal 21 Jan, 2026 Reviews received at journal 26 Dec, 2025 Reviewers agreed at journal 24 Dec, 2025 Reviewers invited by journal 24 Dec, 2025 Editor assigned by journal 19 Sep, 2025 Submission checks completed at journal 19 Sep, 2025 First submitted to journal 15 Sep, 2025 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-7617323","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":565284057,"identity":"5343c3a8-a42e-45b7-9586-8196eac2383a","order_by":0,"name":"Yuanqing 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Corona","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"electrical-engineering","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"elen","sideBox":"Learn more about [Electrical Engineering](http://link.springer.com/journal/202)","snPcode":"202","submissionUrl":"https://submission.nature.com/new-submission/202/3","title":"Electrical Engineering","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer 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Studies have shown that corona loss in transmission lines increases sharply when relative humidity rises. As an important development stage of negative corona discharge in transmission lines, studying the waveform changes under different humidity conditions plays a crucial role in controlling corona discharge in high-voltage direct current transmission lines. The influence of humidity on the corona discharge parameters was calculated using the Wielang approximation, a fluid dynamics model was established, and the negative polarity corona discharge characteristics of the coaxial electrode structure in the air gap under atmospheric pressure were studied, and the Trichel pulse waveforms at different relative humidity were obtained. The electric field intensity and the density distribution characteristics of three types of charged particles (positive ions, electrons and negative ions) in the discharge region at different stages were analyzed and discussed, and the mechanism of variation of the pulse waveform at different relative humidity was presented. Through simulation, it was found that as the relative humidity increased, both the average amplitude and frequency of the discharge pulses increased, and corresponding waveform characteristics appeared in the wire discharge at different relative humidity: when the relative humidity was in the range of 0% to 20%, the wire discharge all appeared in the form of typical Trichel pulses; When the relative humidity was in the range of 20% to 55%, the discharge pulses were accompanied by larger base currents; When the relative humidity is between 55% and 65%, the amplitudes of the discharge pulses alternate in a regular pattern of large and small; When the relative humidity is in the range of 65% to 80%, the descending phase of the larger amplitude pulse is accompanied by a continuous repetition of smaller amplitude pulses; When the relative humidity increases above 80%, the discharge waveform shows a steady current without pulses. The results of this study can provide a theoretical basis for the negative corona discharge waveforms of the air-gap coaxial electrode structure at different humidity levels and provide a reference for the microscopic physical mechanism of corona discharge in transmission lines.\u003c/p\u003e","manuscriptTitle":"Research on the Influence of Humidity on the Trichel Pulse Waveform of Coaxial Electrode Negative Corona","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-12-26 02:46:16","doi":"10.21203/rs.3.rs-7617323/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2026-01-23T00:53:38+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-01-22T10:40:19+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"55712480285518506021711363215151866565","date":"2026-01-22T08:46:02+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"286509445419364800181395068158489711689","date":"2026-01-21T10:37:34+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2025-12-26T19:53:09+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"257149064412218772851813962734974129135","date":"2025-12-24T16:32:50+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2025-12-24T11:59:50+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2025-09-19T08:34:08+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2025-09-19T08:32:37+00:00","index":"","fulltext":""},{"type":"submitted","content":"Electrical Engineering","date":"2025-09-15T07:08:55+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"electrical-engineering","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"elen","sideBox":"Learn more about [Electrical Engineering](http://link.springer.com/journal/202)","snPcode":"202","submissionUrl":"https://submission.nature.com/new-submission/202/3","title":"Electrical Engineering","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"ca15da1f-fe1b-46d8-a4dd-003a0621972a","owner":[],"postedDate":"December 26th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2026-04-30T08:25:43+00:00","versionOfRecord":[],"versionCreatedAt":"2025-12-26 02:46:16","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7617323","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7617323","identity":"rs-7617323","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}