Protection Scheme for Distribution Network Ground Fault Based on Comparison of Zero Sequence Magnitude

Protection Scheme for Distribution Network Ground Fault Based on Comparison of Zero Sequence Magnitude | 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 Protection Scheme for Distribution Network Ground Fault Based on Comparison of Zero Sequence Magnitude Shaofan Zhang, Yanchun Cai, Yanhong Li, Hongliang Wu, Ze Li, Zhengtian Li This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6860796/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In view of the increasingly complex structure of the distribution network and the deterioration of the existing zero-sequence current protection due to the access of distributed power sources, this paper proposes a new protection scheme for single-phase grounding faults in the distribution network by using the widespread configuration of the first and second deep fusion switches in the distribution network, which makes it easy to measure the zero-sequence voltage and zero-sequence current directly, and the real-time data transmission brought by 5G communication technology. The following new protection scheme is proposed: with the help of 5G communication network, the zero-sequence voltage amplitude and line zero-sequence current amplitude of each bus node measured by the first and second depth fusion switches are transmitted to the intelligent protection center, which locates the faulty line and issues commands to isolate it from the fault. The scheme uses the magnitude information of the zero sequence electrical quantities after the fault and does not depend on strict data synchronization. As verified by PSCAD/EMTDC simulation, the scheme improves the reliability and resistance to transition resistance of traditional zero sequence current protection, and can selectively achieve fault isolation even in the case of communication abnormalities resulting in partial information loss, which has good engineering application value. 5G communication distribution network relay protection zero sequence network zero sequence voltage amplitude zero sequence current amplitude Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted 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. 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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-6860796","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":473104655,"identity":"1996215f-d417-44c5-83c5-76ffafb0b215","order_by":0,"name":"Shaofan Zhang","email":"","orcid":"","institution":"Guangzhou Power Supply Bureau，Guangdong Power Grid Corporation","correspondingAuthor":false,"prefix":"","firstName":"Shaofan","middleName":"","lastName":"Zhang","suffix":""},{"id":473104656,"identity":"d1772098-a223-4b7c-93c8-4cd1713ae09c","order_by":1,"name":"Yanchun Cai","email":"","orcid":"","institution":"Guangzhou Power Supply 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