{"id":1280,"date":"2026-07-22T05:33:07","date_gmt":"2026-07-22T05:33:07","guid":{"rendered":"https:\/\/lstransformer.com\/phase-sequence-problem-of-transformer-in-parallel-operation\/"},"modified":"2026-09-27T15:30:35","modified_gmt":"2026-09-27T15:30:35","slug":"phase-sequence-problem-of-transformer-in-parallel-operation","status":"publish","type":"post","link":"https:\/\/www.lstransformer.com\/fr\/phase-sequence-problem-of-transformer-in-parallel-operation\/","title":{"rendered":"Phase sequence problem of transformer in parallel operation"},"content":{"rendered":"<h1 style=\"text-align: left;\">Phase sequence problem of transformer in parallel operation<b><\/b><\/h1>\n<p>In the daily operation and maintenance of the power system, the parallel operation of transformers is very common, but the phase sequence problem is very important and can not be ignored.<\/p>\n<h2><b>Contenu<\/b><\/h2>\n<h3><em>1. Phase sequence: the &#8220;order cornerstone&#8221; of the power system<\/em><\/h3>\n<p>Phase sequence refers to the order of the voltage of each phase of the three-phase AC power supply reaching the maximum value, with positive order, negative order and zero order. For the parallel operation of transformers, the positive phase sequence is the key. Just as the traffic rules ensure the smooth road, it &#8220;guides the direction&#8221; of power transmission, so that the current shuttles between the transformer and the electrical equipment in an orderly manner. Once the order is chaotic, the power transmission will fall into chaos, causing subsequent problems.<\/p>\n<p><a href=\"https:\/\/www.lstransformer.com\/fr\/Transformers\/\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter\" title=\"1742194170710880\" src=\"https:\/\/manage.lstransformer.com\/upload\/news\/1759149269404616.jpg\" alt=\"1742194170710880\" width=\"600\" height=\"325\" border=\"0\" vspace=\"0\" \/><\/a><\/p>\n<h3><em>2. The &#8220;catastrophic consequences&#8221; in different order<\/em><\/h3>\n<p>If the phase sequence of the transformer is inconsistent in parallel, the consequences are extremely serious. The most direct is to cause a short circuit, different phase sequence voltage collision, instantly produce a huge current impact, like the flood washed down the dam, the strong current will burn the transformer winding, destroy the connection line, may also trigger a large area of power failure chain reaction, to bring a heavy blow to production and life. At the same time, the voltage fluctuation also follows, the unstable voltage makes the equipment can not operate normally, precision instrument failure, industrial production line stagnation, resulting in huge economic losses.<\/p>\n<h3><em>3. Phase sequence detection and safeguard measures<\/em><\/h3>\n<p>In order to avoid the hidden danger of phase order, the strict detection process is indispensable. Before the parallel operation, a professional phase sequence table must be used to accurately detect, to ensure that the phase sequence of each transformer is consistent, just like a doctor doing a fine physical examination for a patient. In addition, in the whole process of power system design, installation and operation and maintenance, there should be a rigorous operation process, strict control of line connection, equipment identification and other links, regular inspection and review, eliminate potential hidden dangers in time, and &#8220;escort&#8221; the smooth operation of the power system.<\/p>\n<p><a href=\"https:\/\/www.lstransformer.com\/fr\/Transformers\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-4137\" src=\"https:\/\/lstransformer.com\/wp-content\/uploads\/2026\/07\/17591492884177771-1.jpg\" alt=\"\" width=\"920\" height=\"498\" srcset=\"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/17591492884177771-1.jpg 920w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/17591492884177771-1-600x325.jpg 600w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/17591492884177771-1-300x162.jpg 300w, https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/17591492884177771-1-768x416.jpg 768w\" sizes=\"(max-width: 920px) 100vw, 920px\" \/><\/a><\/p>\n<h2><b>En R\u00e9sum\u00e9<\/b><\/h2>\n<p>In short, the phase sequence of the transformer in parallel operation is related to the safety and stability of the power system. Only by understanding its importance, knowing the harm, and taking scientific detection and safeguard measures, can the transformer operate in parallel safely and efficiently, continuously and stably provide power supply, and ensure the normal operation of production and life.<\/p>\n<h2 style=\"font-weight: bold;\">Contact<\/h2>\n<p>LuShan, heure de l'est. 1975, est un fabricant professionnel Chinois sp\u00e9cialis\u00e9 dans les transformateurs de puissance et des r\u00e9acteurs de plus de 50 ans. Les produits de pointe sont <a href=\"https:\/\/www.lstransformer.com\/fr\/\">transformateur monophas\u00e9, triphas\u00e9 transformateurs d'isolement, transformateur \u00e9lectrique, transformateur de distribution, l'\u00e9tape vers le bas et d'intensifier le transformateur de basse tension du transformateur, transformateur \u00e0 haute tension, contr\u00f4le de transformateur toro\u00efdal transformateur, transformateur R-core; inductances DC, AC r\u00e9acteurs, le filtrage du r\u00e9acteur, de ligne et de charge du r\u00e9acteur, des bobines, le filtrage du r\u00e9acteur, et interm\u00e9diaire, \u00e0 haute fr\u00e9quence produits<\/a>.<\/p>\n<p>Nos transformateurs de puissance et les r\u00e9acteurs sont largement utilis\u00e9s dans les 10 domaines d'application: transport en commun rapide, les machines de construction, les \u00e9nergies renouvelables, intelligents de fabrication, des \u00e9quipements m\u00e9dicaux, de la mine de charbon de l'explosion de la pr\u00e9vention, de l'excitation du syst\u00e8me, frittage sous vide(four), d'une climatisation centrale.<\/p>\n<p>En savoir plus sur transformateur de puissance et le r\u00e9acteur: <a href=\"https:\/\/www.lstransformer.com\/fr\/\">www.lstransformer.com<\/a>.<\/p>\n<p>Si vous souhaitez obtenir des solutions personnalis\u00e9es pour les transformateurs ou des r\u00e9acteurs, veuillez nous contacter.<br \/>\nWhatsApp\uff1a+86 13787095096<br \/>\nE-mail: marketing@hnlsdz.com<\/p>","protected":false},"excerpt":{"rendered":"<p>Phase sequence problem of transformer in parallel operation In the daily operation and maintenance of the power system, the parallel operation of transformers is very common, but the phase sequence problem is very important and can not be ignored. Content 1. Phase sequence: the &#8220;order cornerstone&#8221; of the power system Phase sequence refers to the [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2833,"comment_status":"closed","ping_status":"open","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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