{"id":1776,"date":"2024-10-05T12:52:58","date_gmt":"2024-10-05T12:52:58","guid":{"rendered":"https:\/\/www.jy-electric.com\/?p=1776"},"modified":"2025-04-04T10:37:30","modified_gmt":"2025-04-04T10:37:30","slug":"comprehensive-analysis-of-vacuum-circuit-breaker","status":"publish","type":"post","link":"https:\/\/www.jyiele.com\/da\/comprehensive-analysis-of-vacuum-circuit-breaker\/","title":{"rendered":"Omfattende analyse af vakuumafbrydere: principper for drift og anvendelse"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"1776\" class=\"elementor elementor-1776\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1385b1fc e-flex e-con-boxed e-con e-parent\" data-id=\"1385b1fc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-03de280 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"03de280\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:0,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:0,&quot;sizes&quot;:[]},&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-toc__header\" aria-controls=\"elementor-toc__body\">\n\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tVakuumafbryder\t\t\t<\/h4>\n\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-label=\"\u00c5bn indholdsfortegnelsen\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-label=\"Luk indholdsfortegnelsen\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-toc__body\" aria-expanded=\"true\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewbox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-10b206ec elementor-widget elementor-widget-text-editor\" data-id=\"10b206ec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\n<p><span style=\"color: #0000ff;\"><mark class=\"has-inline-color has-ast-global-color-0-color\" style=\"background-color: rgba(0, 0, 0, 0);\"><a style=\"color: #0000ff;\" href=\"\/da\/product-category\/vacuum-circuit-breaker\/\"><strong>Vakuumafbryder<\/strong><\/a><\/mark><\/span> er en slags koblingsudstyr, der er specialiseret i elkraftsystem, som hurtigt kan afbryde str\u00f8mmen, n\u00e5r kredsl\u00f8bet er defekt, for at beskytte kredsl\u00f8bet og relateret udstyr. I denne artikel vil vi i detaljer diskutere arbejdsprincippet, vakuumafbryderens designegenskaber og dens betydning i det moderne elsystem.<\/p>\n\n<h2 class=\"wp-block-heading\">Hvad er en vakuumafbryder?<\/h2>\n\n<p>Vakuumafbryder, ogs\u00e5 kaldet en afbryder med vakuumafbryder, som arbejder i et vakuummedium for at opn\u00e5 en effektiv afbrydelse og tilkobling af str\u00f8mmen. Dette design g\u00f8r det muligt for vakuumafbrydere at have overlegen isolering og lysbueslukningsevne, n\u00e5r de st\u00e5r over for h\u00f8je sp\u00e6ndinger.<\/p>\n\n<h2 class=\"wp-block-heading\">Princippet for drift af vakuumafbrydere<\/h2>\n\n<p>Hovedprincippet i vakuumafbrydere er at eliminere lysbueenergi i kontakterne (bev\u00e6gelige og statiske). N\u00e5r afbryderens kontakter \u00e5bnes i vakuum, opst\u00e5r der en lysbue mellem kontakterne. Men fordi ioner og metaldampe hurtigt kondenserer p\u00e5 kontaktfladerne, kan lysbuen slukkes hurtigt, hvilket \u00f8ger dielektrikums styrke. Denne egenskab g\u00f8r vakuumafbrydere ideelt egnede til h\u00f8jsp\u00e6ndingsudstyrssystemer.<\/p>\n\n<h2 class=\"wp-block-heading\">Karakteristik af vakuumafbrydere<\/h2>\n\n<p>Det isolerende dielektrikum i vakuumafbrydere har en fremragende lysbueslukningsevne, der kan sammenlignes med luft- og SF6-afbrydere. Kontakterne fungerer i et vakuummilj\u00f8 og er i stand til at bryde den indledende str\u00f8m under nul, hvilket \u00f8ger dielektrikums styrke betydeligt. Dette design g\u00f8r vakuumafbrydere effektive, lette og omkostningseffektive, samtidig med at de ikke kr\u00e6ver dyr vedligeholdelse.<\/p>\n\n<h2 class=\"wp-block-heading\">Arten af vakuumafbrydere<\/h2>\n\n<p>Kontaktens \u00e5bningsafstand er lille. \u00c5bningsafstanden for vakuumafbryderens kontakt er lille. For eksempel beh\u00f8ver en 10kV-afbryder kun en \u00e5bningsafstand p\u00e5 ca. 10 mm med lille driftseffekt og lang mekanisk levetid.<br \/>Lysbuens br\u00e6ndetid er kort: Lysbuens br\u00e6ndetid for en vakuumafbryder er meget kort, normalt omkring en halv uges b\u00f8lge - ca. 10 ms; det er irrelevant for str\u00f8mmens st\u00f8rrelse.<br \/>Dette forst\u00e6rkes yderligere af vakuumets bedre dielektriske egenskaber, som g\u00f8r det velegnet til frakobling af fejl i n\u00e6rheden.<br \/>L\u00e6ngere driftstid: Da slitagen p\u00e5 tidspunktet for kontaktindgrebet er for lille, er den elektriske levetid for en vakuumafbryder lang. Med denne enhed kan der udf\u00f8res 30 til 50 \u00e5bninger med fuld kapacitet, og den opn\u00e5ede nominelle str\u00f8m kan v\u00e6re 5000 cyklusser eller mere.<br \/>N\u00e5r det g\u00e6lder vakuumafbrydere, er st\u00f8rrelsen og v\u00e6gten mindre sammenlignet med konventionelle afbrydere; derfor bliver installation og vedligeholdelse let.<br \/>Kompatibel med kapacitiv belastning: i stand til at slukke for str\u00f8mmen i kapacitiv belastning; kompatibel med anvendelse af h\u00f8jsp\u00e6ndingsnet.<\/p>\n\n<h2 class=\"wp-block-heading\">Type af vakuumafbryder<\/h2>\n\n<p>En typisk modelbetegnelse for en vakuumafbryder omfatter flere bogstaver efterfulgt af et tal, hvis kombination definerer design- og ydeevneegenskaberne. Her f\u00f8lger nogle specifikke fortolkninger:<br \/>Produktkode: for at repr\u00e6sentere bogstaver for forskellige typer afbrydere, \"Z\" for vakuumafbryder, andre er \"S\" - oliefri afbryder, \"K\" - luftafbryder, \"L\" - svovlhexafluoridafbryder og s\u00e5 videre.<br \/>Kode for installationssted: \"N\" betyder indend\u00f8rs installation, og \"W\" betyder udend\u00f8rs installation.<br \/>Designserie nr.: 1, 2, 3 osv. er nogle tal, der angiver en serie af designs.<br \/>Nominel sp\u00e6nding kV, hvilket betyder, at afbryderens nominelle sp\u00e6ndingsklasse kan v\u00e6re 10 kV eller 12 kV.<br \/>Nominel str\u00f8m i A: V\u00e6rdien af den str\u00f8m, som afbryderen sikkert kan b\u00e6re, f.eks. 630A, 1250A osv.<br \/>Nominel brydestr\u00f8m: maksimal v\u00e6rdi af str\u00f8m, som en afbryder er i stand til at bryde ved kortslutning, f.eks. 20kA, 25kA osv.<br \/>For eksempel er betydningen af en vakuumafbryder af typen ZN12-10<br \/>\"Z\" for vakuumafbryder<br \/>\"N\" = Installation indend\u00f8rs<br \/>\"12\" st\u00e5r for designserie nr.<br \/>\"10\" angiver, at den nominelle sp\u00e6nding er 10kV.<\/p>\n\n<h2 class=\"wp-block-heading\">Anvendelser af vakuumafbrydere<\/h2>\n\n<p>Vakuumafbrydere bruges i elsystemer, hvor sp\u00e6ndingsomr\u00e5det er mellem 11kV og 33kV. Under driften er kontakterne helt forseglet i en vakuumcylinder, hvilket sikrer, at de adskilles uden at danne lysbuer. Fordelene ved dette design omfatter lave vedligeholdelseskrav, ingen gasemissioner, lang levetid og lavt st\u00f8jniveau, hvilket g\u00f8r det ideelt til indend\u00f8rs milj\u00f8er.<\/p>\n\n<h2 class=\"wp-block-heading\">Udv\u00e6lgelsesteknik i vakuumafbryder<\/h2>\n\n<h4 class=\"wp-block-heading\">Valg af korrekt vakuumafbryder skal baseres p\u00e5 f\u00f8lgende:<\/h4>\n\n<p>Valget sker i henhold til typen af koblingsudstyr:<br \/>I indend\u00f8rs faste koblingsanl\u00e6g, f.eks. 10 kV koblingsanl\u00e6g, er denne type ZN28-afbryder den mest anvendelige, da den har egenskaber til elektrisk og manuel betjening via en fjedermekanisme.<br \/>I indend\u00f8rs koblingsanl\u00e6g af bev\u00e6gelses\u00e5bningstypen, s\u00e5som KYN-typen med en fjederintegreret betjeningsmekanisme, kan afbryderen af VS1-typen v\u00e6lges.<br \/>Valg af nominel str\u00f8m: Normal nominel str\u00f8m vil v\u00e6re 630A, 1000A, 1250A, 1600A osv. Den skal v\u00e6lges i overensstemmelse med beregningen af belastningsstr\u00f8mmen.<br \/>For eksempel vil en transformer p\u00e5 2000 kVA med en nominel str\u00f8m p\u00e5 115,5 A v\u00e6lge en 630 A-afbryder som:.<br \/>Kalibrering af brydestr\u00f8mmen Afbryderens nominelle brydestr\u00f8m skal v\u00e6re h\u00f8jere end spidsv\u00e6rdien af kortslutningsstr\u00f8mmen p\u00e5 installationsstedet.<br \/>For eksempel, n\u00e5r den maksimale kortslutningsstr\u00f8m er 26kA; kan f\u00f8lgende specifikation v\u00e6lges: afbryderen, hvis \u00e5bningsstr\u00f8m er 31,5kA.<br \/>Andre kalibreringsvariabler er en relativ afstand mellem faserne, installationsafh\u00e6ngige parametre, forriglingsforhold, tilstedev\u00e6relse af en overstr\u00f8msspole eller sp\u00e6ndingstabsspole blandt andet for systemkompatibilitet.<\/p>\n\n<h2 class=\"wp-block-heading\">Princippet for drift af h\u00f8jsp\u00e6ndings-vakuumafbrydere<\/h2>\n\n<p>H\u00f8jsp\u00e6ndings-vakuumafbrydere er koblingsudstyr designet til h\u00f8jsp\u00e6ndingssystemer, der bruger vakuum som isolerings- og lysbueslukningsmedium, og som er kendetegnet ved lille st\u00f8rrelse, lav v\u00e6gt og enkel vedligeholdelse.<\/p>\n\n<h2 class=\"wp-block-heading\">Komponenter i vakuumafbrydere<\/h2>\n\n<p>Vigtige komponenter i en vakuumafbryder er tr\u00e6kst\u00e6nger, fleksible forbindelser, klemmer, vakuumindikatorer, betjeningsh\u00e5ndtag, l\u00e5sekamre og afbryderfjedre.<\/p>\n\n<h4 class=\"wp-block-heading\">Hovedkomponenterne i en vakuumafbryder omfatter:<\/h4>\n\n<p><strong>Vakuumflaske<\/strong>: kernekomponenten, der bruges til isolering og lysbueslukning, normalt lavet af keramik eller glasmateriale, der kan modst\u00e5 h\u00f8j temperatur og h\u00f8jt tryk.<br \/><strong>Kontaktpersoner: <\/strong>de vigtigste elektriske forbindelsesdele, normalt lavet af kobbermateriale, med god elektrisk ledningsevne og slidstyrke.<br \/>Faste kontakter: Faste kontakter placeret i vakuumflaskens krop for at sikre kredsl\u00f8bets stabilitet og sikkerhed.<br \/>Fjeder: Den vigtigste kraftkilde, der bruges til at skubbe adskillelsen af vakuumflasken og den bev\u00e6gelige kontakt.<br \/>Betjeningsh\u00e5ndtag: Enheden, der styrer vakuumafbryderens skiftetilstand, og som kan drives med h\u00e5ndkraft eller elmotor.<br \/>Ledestang: Den elektriske komponent, der forbinder den eksterne str\u00f8mforsyning med vakuumafbryderens interne kontakter.<br \/>Udl\u00f8sningsmekanisme: Mekanisme, der sikrer hurtig \u00e5bning af vakuumafbryderen under unormale forhold.<\/p>\n\n<p>Vakuumafbryder: kernekomponenten, det interne h\u00f8jvakuum-milj\u00f8.<br \/>Betjeningsmekanisme: styrer \u00e5bning og lukning af afbryderen.<br \/>Isolationsst\u00f8tter: st\u00f8tter delene og s\u00f8rger for isolering.<br \/>Ledende stik: Forbinder de forskellige dele af kredsl\u00f8bet.<br \/>Skal: Beskytter de indre komponenter mod det ydre milj\u00f8.<\/p>\n\n<h2 class=\"wp-block-heading\">Betjeningsmekanisme<\/h2>\n\n<p>Vakuumafbryderens kammer holdes normalt i et h\u00f8jt vakuum p\u00e5 under 10^-4 Pa, et milj\u00f8, der effektivt forhindrer str\u00f8mgennemgang. N\u00e5r kredsl\u00f8bet skal afbrydes, adskilles de bev\u00e6gelige og statiske kontakter hurtigt, og lysbuen slukkes hurtigt p\u00e5 grund af den manglende gasst\u00f8tte, hvilket fuldf\u00f8rer afbrydelsen.<\/p>\n\n<p>Betjeningsmekanismen er ansvarlig for at \u00e5bne og lukke afbryderen og indeholder normalt en fjederbelastet energilagringsenhed, der aktiverer kontakterne til at adskille sig ved at frigive den lagrede energi. Mekanismen kan styres manuelt eller med fjernbetjening.<\/p>\n\n<h2 class=\"wp-block-heading\">Vedligeholdelse og anvendelse<\/h2>\n\n<p>Vedligeholdelse af h\u00f8jsp\u00e6ndings-vakuumafbrydere er relativt enkel og best\u00e5r hovedsageligt af regelm\u00e6ssige inspektioner af udseende, vakuum og kontaktslitage. De bruges i vid udstr\u00e6kning i transformerstationer, industriel str\u00f8mfordeling og bynet for at sikre en sikker og p\u00e5lidelig drift af h\u00f8jsp\u00e6ndingssystemer.<\/p>\n\n<h2 class=\"wp-block-heading\">Konklusion<\/h2>\n\n<p>H\u00f8jsp\u00e6ndings-vakuumafbrydere bruges i vid udstr\u00e6kning i h\u00f8jsp\u00e6ndingssystemer p\u00e5 grund af deres h\u00f8je p\u00e5lidelighed, lange levetid og enkle vedligeholdelse. I fremtiden, med fremskridt inden for videnskab og teknologi og udvikling af smart grid, vil vakuumafbrydere spille en stadig vigtigere rolle i effektiv energistyring og b\u00e6redygtig udvikling.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7ede20f elementor-widget elementor-widget-heading\" data-id=\"7ede20f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Udvalgte produkter<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Vakuumafbryder Vakuumafbryder er en slags koblingsudstyr, der er specialiseret i elkraftsystem, som hurtigt kan afbryde str\u00f8mmen, n\u00e5r kredsl\u00f8bet er defekt, for at beskytte kredsl\u00f8bet og relateret udstyr. I denne artikel vil vi i detaljer diskutere arbejdsprincippet, designkarakteristika for vakuumafbryder [...].<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[37],"tags":[],"class_list":["post-1776","post","type-post","status-publish","format-standard","hentry","category-vcb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>An in-depth look at vacuum circuit breakers: principles of operation and applications<\/title>\n<meta name=\"description\" content=\"Reveals the secrets of vacuum circuit breakers, explores their efficient working principles and application advantages, and contributes to the safety and stability of power systems! Understand the future development trend.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jyiele.com\/da\/comprehensive-analysis-of-vacuum-circuit-breaker\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"An in-depth look at vacuum circuit breakers: principles of operation and applications\" \/>\n<meta property=\"og:description\" content=\"Reveals the secrets of vacuum circuit breakers, explores their efficient working principles and application advantages, and contributes to the safety and stability of power systems! 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