{"id":50320,"date":"2026-03-23T08:32:37","date_gmt":"2026-03-23T08:32:37","guid":{"rendered":"https:\/\/www.kdmsteel.com\/?p=50320"},"modified":"2026-03-23T08:32:37","modified_gmt":"2026-03-23T08:32:37","slug":"what-is-an-electrical-substation","status":"publish","type":"post","link":"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/","title":{"rendered":"Qu&#039;est-ce qu&#039;un poste de transformation \u00e9lectrique\u00a0? \u2013 Le guide ultime pour vous"},"content":{"rendered":"<p>Quel est le r\u00f4le des postes \u00e9lectriques dans les r\u00e9seaux \u00e9lectriques modernes\u00a0? Quels types existent\u00a0? Cet article vise \u00e0 aider les ing\u00e9nieurs \u00e9lectriciens et les responsables d\u2019installations industrielles \u00e0 comprendre le fonctionnement des postes \u00e9lectriques, leurs principaux composants et les diff\u00e9rents types disponibles, afin de vous aider \u00e0 faire le choix le plus adapt\u00e9 \u00e0 votre projet.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Basculer la table des mati\u00e8res\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Basculer<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#What_Is_an_Electrical_Substation\" >Qu&#039;est-ce qu&#039;un poste de transformation \u00e9lectrique ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Main_Components_of_an_Electrical_Substation\" >Principaux composants d&#039;une sous-station \u00e9lectrique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Types_of_Electrical_Substations\" >Types de sous-stations \u00e9lectriques<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#By_Function\" >Par fonction :<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Step-Up_Substations\" >Postes de transformation \u00e9l\u00e9vateurs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Step-Down_Substations\" >Postes de transformation abaisseurs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Switching_Substations\" >Postes de commutation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Converter_Substations\" >Postes de conversion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Collector_Substations\" >Postes de collecte<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#By_Voltage_Level\" >Par niveau de tension\u00a0:<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Distribution_Substations\" >Postes de distribution<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Sub-Transmission_Substations\" >Postes de sous-transmission<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Transmission_Substations\" >Postes de transformation de transport<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#By_Installation_Type\" >Par type d&#039;installation\u00a0:<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Outdoor_Substations\" >Sous-stations ext\u00e9rieures<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Indoor_Substations\" >Sous-stations int\u00e9rieures<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Underground_Substations\" >Sous-stations souterraines<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#How_Does_an_Electrical_Substation_Work\" >Comment fonctionne une sous-station \u00e9lectrique ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Advantages_of_Electrical_Substations\" >Avantages des sous-stations \u00e9lectriques<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Improved_Reliability_and_Automation\" >Fiabilit\u00e9 et automatisation am\u00e9lior\u00e9es<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Remote_Monitoring\" >Surveillance \u00e0 distance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Enhanced_System_Protection\" >Protection du syst\u00e8me am\u00e9lior\u00e9e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Improved_Grid_Stability_and_Control\" >Am\u00e9lioration de la stabilit\u00e9 et du contr\u00f4le du r\u00e9seau<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Integration_of_Renewable_Energy\" >Int\u00e9gration des \u00e9nergies renouvelables<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Optimized_Power_Quality\" >Qualit\u00e9 de l&#039;\u00e9nergie optimis\u00e9e<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Applications_of_Electrical_Substation\" >Applications des sous-stations \u00e9lectriques<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Utility_Power_Grids\" >R\u00e9seaux \u00e9lectriques publics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Industrial_Plants\" >usines industrielles<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Renewable_Energy_Projects\" >Projets d&#039;\u00e9nergies renouvelables<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Commercial_Infrastructure\" >Infrastructures commerciales<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#FAQ\" >FAQ<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#What_is_the_Difference_Between_Electrical_Substation_and_Transformer\" >Quelle est la diff\u00e9rence entre un poste de transformation \u00e9lectrique et un transformateur\u00a0?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#What_is_AIS_vs_GIS_Whats_the_Difference_Between_Them\" >Qu&#039;est-ce qu&#039;un AIS et un GIS\u00a0? Quelle est la diff\u00e9rence entre les deux\u00a0?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#What_is_the_Difference_Between_Greenfield_and_Brownfield_Substation_Projects\" >Quelle est la diff\u00e9rence entre les projets de sous-stations Greenfield et Brownfield\u00a0?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#What_Factors_Should_Be_Considered_When_Designing_a_Substation\" >Quels facteurs faut-il prendre en compte lors de la conception d&#039;un poste de transformation ?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/www.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/#Final_Thought\" >Derni\u00e8re r\u00e9flexion<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_an_Electrical_Substation\"><\/span>Qu&#039;est-ce qu&#039;un poste de transformation \u00e9lectrique ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Un poste de transformation \u00e9lectrique est une installation du r\u00e9seau \u00e9lectrique con\u00e7ue sp\u00e9cifiquement pour convertir les niveaux de tension, contr\u00f4ler les circuits et r\u00e9guler le flux d&#039;\u00e9lectricit\u00e9 entre les centrales \u00e9lectriques et les utilisateurs finaux. Il convertit principalement la tr\u00e8s haute tension utilis\u00e9e pour le transport efficace de l&#039;\u00e9lectricit\u00e9 sur de longues distances en une tension plus basse et plus s\u00fbre, n\u00e9cessaire au fonctionnement de vos \u00e9quipements.<\/p>\n<p><a href=\"https:\/\/www.kdmsteel.com\/fr\/kiosque-sous-station\/\">Sous-stations<\/a>\u00a0Il assure \u00e9galement la distribution de l&#039;\u00e9nergie sur les diff\u00e9rentes lignes de distribution, la d\u00e9tection et l&#039;isolement des d\u00e9fauts gr\u00e2ce \u00e0 des disjoncteurs, et utilise l&#039;automatisation pour g\u00e9rer le flux d&#039;\u00e9nergie et les performances du syst\u00e8me. Il joue un r\u00f4le important dans le maintien de la stabilit\u00e9 de la tension et de la fr\u00e9quence du r\u00e9seau.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50330\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation.jpg\" alt=\"Sous-station \u00e9lectrique\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Main_Components_of_an_Electrical_Substation\"><\/span>Principaux composants d&#039;une sous-station \u00e9lectrique<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong><b>Transformateurs de puissance : <\/b><\/strong><a href=\"https:\/\/www.kdmsteel.com\/fr\/transformateur-de-commande\/\">Transformateurs<\/a><strong><b>\u00a0<\/b><\/strong>Les transformateurs sont les \u00e9quipements principaux d&#039;un poste \u00e9lectrique et se classent en deux cat\u00e9gories\u00a0: \u00e9l\u00e9vateurs et abaisseurs. Selon la fonction du poste, le transformateur \u00e9l\u00e8ve ou abaisse la tension pour r\u00e9pondre aux besoins de la charge connect\u00e9e.<\/p>\n<p><a href=\"https:\/\/www.kdmsteel.com\/fr\/appareillage-electrique-2\/\"><strong><b>Appareillage de commutation<\/b><\/strong><\/a><strong><b>: <\/b><\/strong>Il assure la commutation, la protection et l&#039;isolation des \u00e9quipements de commutation de circuits. Il se compose principalement de disjoncteurs, d&#039;interrupteurs de sectionnement et d&#039;interrupteurs de charge.<\/p>\n<p><a href=\"https:\/\/www.kdmsteel.com\/fr\/barres-omnibus-en-cuivre\/\"><strong><b>Barres omnibus<\/b><\/strong><\/a><strong><b>: <\/b><\/strong>Les barres omnibus sont des syst\u00e8mes conducteurs qui collectent et distribuent l&#039;\u00e9lectricit\u00e9 dans l&#039;ensemble du poste de transformation. Elles doivent supporter des courants \u00e9lev\u00e9s tout en minimisant la chute de tension et le d\u00e9gagement de chaleur.<\/p>\n<p><strong><b>Relais de protection et syst\u00e8mes de contr\u00f4le<\/b><\/strong>Le syst\u00e8me de protection peut d\u00e9tecter les conditions anormales et d\u00e9clencher des actions correctives, notamment en mati\u00e8re de surintensit\u00e9, d&#039;arc \u00e9lectrique et d&#039;isolation rapide des d\u00e9fauts.<\/p>\n<p><strong><b>Transformateurs d&#039;instruments<\/b><\/strong>Les transformateurs se divisent en transformateurs de courant (TC) et en transformateurs de tension (TT\/TP). Les premiers abaissent le courant pour les relais et les instruments de mesure, tandis que les seconds abaissent la tension \u00e0 un niveau s\u00fbr. Ils servent tous deux \u00e0 mesurer, prot\u00e9ger et contr\u00f4ler les signaux de courant ou de tension.<\/p>\n<p><strong><b>Syst\u00e8me de contr\u00f4le et de surveillance (SCADA)<\/b><\/strong>Les sous-stations \u00e9lectriques avanc\u00e9es peuvent utiliser <a href=\"https:\/\/www.kdmsteel.com\/fr\/panneaux-scada\/\">SCADA <\/a>Syst\u00e8mes de surveillance en temps r\u00e9el et de contr\u00f4le \u00e0 distance, collectant des donn\u00e9es sur la tension, le courant, la charge et l&#039;\u00e9tat des \u00e9quipements. Ils prennent en charge l&#039;automatisation et la maintenance pr\u00e9dictive.<\/p>\n<p><strong><b>Syst\u00e8mes auxiliaires<\/b><\/strong>Les syst\u00e8mes auxiliaires comprennent l&#039;alimentation \u00e9lectrique de service de la station, le syst\u00e8me de protection incendie, le syst\u00e8me de refroidissement et le syst\u00e8me de communication. Ces dispositifs assurent le fonctionnement de la sous-station.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_Electrical_Substations\"><\/span>Types de sous-stations \u00e9lectriques<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"By_Function\"><\/span>Par fonction :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"Step-Up_Substations\"><\/span>Postes de transformation \u00e9l\u00e9vateurs<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Le poste de transformation \u00e9l\u00e9vateur \u00e9l\u00e8ve la tension du niveau du g\u00e9n\u00e9rateur au niveau du r\u00e9seau de transport et est g\u00e9n\u00e9ralement situ\u00e9 \u00e0 proximit\u00e9 de la centrale \u00e9lectrique. Il permet de r\u00e9duire les pertes lors du transport sur de longues distances et est couramment utilis\u00e9 dans les centrales thermiques et hydro\u00e9lectriques.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Step-Down_Substations\"><\/span>Postes de transformation abaisseurs<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Ce type de poste de transformation abaisse la tension de transport au niveau de tension de distribution utilisable et alimente les utilisateurs finaux. Il est g\u00e9n\u00e9ralement situ\u00e9 \u00e0 proximit\u00e9 des villes et des zones industrielles et est largement utilis\u00e9 dans les r\u00e9seaux de distribution urbains et industriels.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Switching_Substations\"><\/span>Postes de commutation<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Le poste de commutation ne modifie pas le niveau de tension. Il sert \u00e0 la commutation, \u00e0 l&#039;acheminement et au contr\u00f4le du flux d&#039;\u00e9nergie. Il permet d&#039;isoler efficacement les d\u00e9fauts et de g\u00e9rer la r\u00e9partition de la charge, assurant ainsi flexibilit\u00e9 et redondance \u00e0 votre r\u00e9seau \u00e9lectrique.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Converter_Substations\"><\/span>Postes de conversion<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Le poste de conversion est utilis\u00e9 dans les syst\u00e8mes de transport d&#039;\u00e9lectricit\u00e9 \u00e0 courant continu haute tension (CCHT) pour convertir le courant alternatif (CA) en courant continu (CC). Il est essentiel pour le transport d&#039;\u00e9lectricit\u00e9 sur de longues distances et pour l&#039;interconnexion de diff\u00e9rents r\u00e9seaux \u00e9lectriques.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Collector_Substations\"><\/span>Postes de collecte<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Le poste de transformation collecteur permet d&#039;\u00e9lever la tension produite au niveau de transport et de collecter l&#039;\u00e9nergie provenant de plusieurs unit\u00e9s de production. Il peut \u00eatre utilis\u00e9 dans les projets d&#039;\u00e9nergies renouvelables.<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50326\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-2.jpg\" alt=\"Sous-station \u00e9lectrique (2)\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-2.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-2-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-2-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-2-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"By_Voltage_Level\"><\/span>Par niveau de tension\u00a0:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"Distribution_Substations\"><\/span>Postes de distribution<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>La tension du poste de distribution est inf\u00e9rieure \u00e0 69 kV, ce qui convient \u00e0 la plupart de vos installations industrielles, mais les pertes de transmission sont plus \u00e9lev\u00e9es qu&#039;\u00e0 des niveaux de tension plus \u00e9lev\u00e9s.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Sub-Transmission_Substations\"><\/span>Postes de sous-transmission<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Les postes de sous-transmission, d&#039;une tension nominale de 69 \u00e0 230 kV, conviennent aux installations de moyenne et grande taille. Ils offrent une fiabilit\u00e9 accrue, mais n\u00e9cessitent plus d&#039;espace en raison de la taille plus importante des \u00e9quipements.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Transmission_Substations\"><\/span>Postes de transformation de transport<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>La tension de ce poste de transformation est sup\u00e9rieure \u00e0 230 kV et il est g\u00e9n\u00e9ralement utilis\u00e9 dans les grands complexes industriels. Il est possible de le raccorder directement au r\u00e9seau, mais cela engendrerait des co\u00fbts \u00e9lev\u00e9s et une maintenance complexe.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"By_Installation_Type\"><\/span>Par type d&#039;installation\u00a0:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"Outdoor_Substations\"><\/span>Sous-stations ext\u00e9rieures<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Une sous-station ext\u00e9rieure n\u00e9cessite une installation en milieu ouvert. Son co\u00fbt est moindre, mais elle requiert plus d&#039;espace. Ce type de sous-station utilise l&#039;air comme principal isolant et est couramment employ\u00e9 dans les r\u00e9seaux de transport d&#039;\u00e9lectricit\u00e9 \u00e0 haute tension.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Indoor_Substations\"><\/span>Sous-stations int\u00e9rieures<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Le poste de transformation int\u00e9rieur doit \u00eatre install\u00e9 dans une structure ferm\u00e9e afin d&#039;\u00e9viter les influences environnementales. Il convient aux environnements urbains et industriels.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"Underground_Substations\"><\/span>Sous-stations souterraines<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>Une sous-station \u00e9lectrique souterraine tire son nom de son emplacement. Son but est de pr\u00e9server l&#039;espace en surface dans les zones urbaines denses. Cependant, cela engendre des co\u00fbts de construction et de maintenance plus \u00e9lev\u00e9s.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Does_an_Electrical_Substation_Work\"><\/span>Comment fonctionne une sous-station \u00e9lectrique ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>L&#039;\u00e9lectricit\u00e9 arrive au poste de transformation par des lignes de transport ou des sources d&#039;\u00e9nergie \u00e0 un niveau de tension sp\u00e9cifique. Selon le type de poste, les transformateurs peuvent soit \u00e9lever la tension pour le transport sur de longues distances, soit l&#039;abaisser pour alimenter directement les utilisateurs finaux.<\/p>\n<p>Dans l&#039;ensemble du syst\u00e8me, les appareillages de commutation et les syst\u00e8mes de protection surveillent en permanence les param\u00e8tres \u00e9lectriques et peuvent isoler automatiquement les d\u00e9fauts afin d&#039;\u00e9viter les dommages aux \u00e9quipements et les perturbations du r\u00e9seau.<\/p>\n<p>Lorsque la tension est ajust\u00e9e, l&#039;\u00e9nergie est transmise par le jeu de barres. Ce dernier sert de point de distribution central, acheminant l&#039;\u00e9lectricit\u00e9 vers les d\u00e9parts. L&#039;\u00e9nergie est ensuite transport\u00e9e vers les sous-stations en aval ou directement vers les zones industrielles, commerciales ou r\u00e9sidentielles.<\/p>\n<p>En r\u00e9sum\u00e9, la fonction principale d&#039;un poste de transformation est de recevoir l&#039;\u00e9nergie \u00e9lectrique, de la convertir au niveau de tension appropri\u00e9 et de la transmettre en toute s\u00e9curit\u00e9 au maillon suivant du r\u00e9seau \u00e9lectrique. Ceci garantit la fiabilit\u00e9, l&#039;efficacit\u00e9 et la s\u00e9curit\u00e9 de chaque \u00e9tape du transport d&#039;\u00e9lectricit\u00e9.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Advantages_of_Electrical_Substations\"><\/span>Avantages des sous-stations \u00e9lectriques<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50329\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-5.jpg\" alt=\"Sous-station \u00e9lectrique (5)\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-5.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-5-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-5-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-5-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Improved_Reliability_and_Automation\"><\/span>Fiabilit\u00e9 et automatisation am\u00e9lior\u00e9es<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le poste de transformation joue un r\u00f4le central dans le r\u00e9seau \u00e9lectrique, distribuant l&#039;\u00e9nergie \u00e0 de multiples d\u00e9parts et sites. Il garantit la stabilit\u00e9 de l&#039;alimentation \u00e9lectrique et assure l&#039;\u00e9quilibrage de la charge entre les diff\u00e9rentes r\u00e9gions. Les postes de transformation sont essentiels au fonctionnement continu et stable des industries et des services publics.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Remote_Monitoring\"><\/span>Surveillance \u00e0 distance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Les sous-stations \u00e9lectriques peuvent utiliser des syst\u00e8mes num\u00e9riques pour offrir des capacit\u00e9s de contr\u00f4le avanc\u00e9es. Elles permettent de surveiller les performances du syst\u00e8me en temps r\u00e9el, d&#039;effectuer des op\u00e9rations \u00e0 distance via SCADA et d&#039;exploiter et d&#039;analyser les donn\u00e9es pour la maintenance pr\u00e9dictive. Les sous-stations contribuent \u00e0 am\u00e9liorer l&#039;efficacit\u00e9 op\u00e9rationnelle et \u00e0 r\u00e9duire le besoin d&#039;interventions manuelles.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Enhanced_System_Protection\"><\/span>Protection du syst\u00e8me am\u00e9lior\u00e9e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le poste de transformation \u00e9lectrique est \u00e9quip\u00e9 d&#039;un syst\u00e8me de protection avanc\u00e9 capable de d\u00e9tecter les d\u00e9fauts tels que les courts-circuits et les surcharges, d&#039;isoler automatiquement les parties affect\u00e9es et de pr\u00e9venir les pannes en cascade sur le r\u00e9seau \u00e9lectrique. Il r\u00e9duit ainsi consid\u00e9rablement les dommages caus\u00e9s \u00e0 vos \u00e9quipements et les temps d&#039;arr\u00eat.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Improved_Grid_Stability_and_Control\"><\/span>Am\u00e9lioration de la stabilit\u00e9 et du contr\u00f4le du r\u00e9seau<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le poste de transformation \u00e9lectrique contribue \u00e9galement \u00e0 maintenir des niveaux de tension et de fr\u00e9quence stables. Il permet de r\u00e9guler le flux d&#039;\u00e9nergie au sein du r\u00e9seau, d&#039;assurer la synchronisation du syst\u00e8me et de pr\u00e9venir les fluctuations de tension.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Integration_of_Renewable_Energy\"><\/span>Int\u00e9gration des \u00e9nergies renouvelables<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La sous-station permet l&#039;int\u00e9gration des \u00e9nergies renouvelables au r\u00e9seau \u00e9lectrique, et elle peut \u00e9galement augmenter la tension provenant des parcs solaires et \u00e9oliens pour l&#039;int\u00e9gration au r\u00e9seau, g\u00e9rer la production d&#039;\u00e9nergie variable et assurer une connexion au r\u00e9seau sans probl\u00e8me.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Optimized_Power_Quality\"><\/span>Qualit\u00e9 de l&#039;\u00e9nergie optimis\u00e9e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>La sous-station vous fournit une alimentation \u00e9lectrique de haute qualit\u00e9 et r\u00e9duit les fluctuations de tension. Elle utilise \u00e9galement des batteries de condensateurs pour am\u00e9liorer le facteur de puissance, ce qui est essentiel pour vos processus industriels et vos \u00e9quipements de pr\u00e9cision.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Applications_of_Electrical_Substation\"><\/span>Applications des sous-stations \u00e9lectriques<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50328\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-4.jpg\" alt=\"Sous-station \u00e9lectrique (4)\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-4.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-4-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-4-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-4-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Utility_Power_Grids\"><\/span>R\u00e9seaux \u00e9lectriques publics<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Les sous-stations constituent l&#039;infrastructure des r\u00e9seaux \u00e9lectriques nationaux et r\u00e9gionaux. Elles permettent, dans les centrales \u00e9lectriques, d&#039;augmenter la tension pour le transport d&#039;\u00e9lectricit\u00e9 sur de longues distances. Elles sont \u00e9galement utilis\u00e9es dans les villes et les centres de consommation pour r\u00e9duire la tension de distribution et faciliter l&#039;interconnexion entre les diff\u00e9rentes zones du r\u00e9seau \u00e9lectrique.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Industrial_Plants\"><\/span>usines industrielles<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Si vous exploitez des industries de grande envergure, telles que des usines de fabrication, des installations p\u00e9troli\u00e8res et gazi\u00e8res ou des usines de traitement chimique, vous pourriez avoir besoin de vous appuyer fortement sur des sous-stations \u00e9lectriques d\u00e9di\u00e9es. Ces sous-stations peuvent fournir une alimentation \u00e9lectrique stable \u00e0 vos machines lourdes et \u00e0 vos lignes de production. Elles g\u00e8rent \u00e9galement des demandes de charge \u00e9lev\u00e9es et variables, assurant ainsi la s\u00e9curit\u00e9 de vos op\u00e9rations et pr\u00e9venant les interruptions potentielles dues \u00e0 des pannes.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Renewable_Energy_Projects\"><\/span>Projets d&#039;\u00e9nergies renouvelables<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Les projets d&#039;\u00e9nergies renouvelables les plus courants comprennent les centrales hydro\u00e9lectriques et les parcs solaires. L&#039;\u00e9nergie renouvelable n\u00e9cessite des sous-stations \u00e9lectriques pour \u00eatre raccord\u00e9e au r\u00e9seau. Ces sous-stations collectent l&#039;\u00e9lectricit\u00e9 produite par les panneaux solaires ou les \u00e9oliennes, augmentent sa tension et la transportent. Elles g\u00e8rent \u00e9galement les fluctuations de la production d&#039;\u00e9lectricit\u00e9.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Commercial_Infrastructure\"><\/span>Infrastructures commerciales<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Si vous exploitez des centres de donn\u00e9es, des a\u00e9roports, des h\u00f4pitaux ou des immeubles de bureaux, l&#039;environnement commercial \u00e0 forte demande n\u00e9cessite des sous-stations \u00e9lectriques pour les alimenter. Ces sous-stations peuvent fournir une alimentation fiable aux grands b\u00e2timents et complexes, garantissant ainsi une alimentation stable pour vos activit\u00e9s critiques. De plus, elles permettent d&#039;\u00e9viter des cons\u00e9quences financi\u00e8res et op\u00e9rationnelles importantes en cas de coupure de courant.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-50327\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-3.jpg\" alt=\"Sous-station \u00e9lectrique (3)\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-3.jpg 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-3-150x84.jpg 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-3-768x432.jpg 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/03\/Electrical-Substation-3-18x10.jpg 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"What_is_the_Difference_Between_Electrical_Substation_and_Transformer\"><\/span>Quelle est la diff\u00e9rence entre un poste de transformation \u00e9lectrique et un transformateur\u00a0?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le poste de transformation est utilis\u00e9 comme un syst\u00e8me complet pour g\u00e9rer le flux d&#039;\u00e9nergie sur le r\u00e9seau. Le transformateur est un appareil unique au sein du poste et sert \u00e0 modifier le niveau de tension.<\/p>\n<p>En d&#039;autres termes, le transformateur est principalement responsable de l&#039;\u00e9l\u00e9vation et de la r\u00e9duction de la tension. Parall\u00e8lement, le poste de transformation int\u00e8gre des transformateurs, des appareillages de commutation, des dispositifs de protection et des syst\u00e8mes de contr\u00f4le pour assurer la transformation de la tension, la distribution de l&#039;\u00e9nergie, la protection contre les d\u00e9fauts et le contr\u00f4le global du syst\u00e8me.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_is_AIS_vs_GIS_Whats_the_Difference_Between_Them\"><\/span>Qu&#039;est-ce qu&#039;un AIS et un GIS\u00a0? Quelle est la diff\u00e9rence entre les deux\u00a0?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Un poste de transformation isol\u00e9 \u00e0 l&#039;air (AIS) utilise l&#039;air comme principal isolant. De ce fait, son installation n\u00e9cessite une surface au sol plus importante et se fait souvent en ext\u00e9rieur. Son co\u00fbt initial est relativement faible et sa maintenance est ais\u00e9e.<\/p>\n<p>\u00c0 l&#039;inverse, le GIS utilise le SF\u2086 (hexafluorure de soufre) comme isolant et offre d&#039;excellentes performances d&#039;isolation. L&#039;\u00e9quipement pr\u00e9sente une conception plus compacte et ferm\u00e9e. Cependant, son co\u00fbt initial est plus \u00e9lev\u00e9 et sa maintenance plus complexe.<\/p>\n<p>Par cons\u00e9quent, les principales diff\u00e9rences entre les syst\u00e8mes d&#039;information acad\u00e9mique (SIA) et les syst\u00e8mes d&#039;information g\u00e9ographique (SIG) r\u00e9sident dans le co\u00fbt, l&#039;espace et les performances.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_is_the_Difference_Between_Greenfield_and_Brownfield_Substation_Projects\"><\/span>Quelle est la diff\u00e9rence entre les projets de sous-stations Greenfield et Brownfield\u00a0?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Le projet de construction d&#039;un poste \u00e9lectrique en zone vierge consiste \u00e0 b\u00e2tir un nouveau poste sur un terrain non am\u00e9nag\u00e9. Les ing\u00e9nieurs peuvent ainsi concevoir l&#039;agencement, s\u00e9lectionner les \u00e9quipements et configurer le syst\u00e8me avec une plus grande flexibilit\u00e9. Cependant, ce type de projet engendre des co\u00fbts initiaux plus \u00e9lev\u00e9s et des d\u00e9lais de d\u00e9veloppement plus longs.<\/p>\n<p>Le projet de modernisation de sous-stations industrielles consiste \u00e0 mettre \u00e0 niveau, agrandir ou r\u00e9nover des sous-stations existantes. Il doit s&#039;int\u00e9grer \u00e0 l&#039;infrastructure existante, aux contraintes d&#039;espace et aux limitations op\u00e9rationnelles. Ce type de projet est g\u00e9n\u00e9ralement plus rentable et sa r\u00e9alisation est plus rapide.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_Factors_Should_Be_Considered_When_Designing_a_Substation\"><\/span>Quels facteurs faut-il prendre en compte lors de la conception d&#039;un poste de transformation ?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Lors de la conception et de la construction d&#039;un poste de transformation, il est n\u00e9cessaire de prendre en compte le niveau de tension, la capacit\u00e9 et les besoins d&#039;extension futurs afin de garantir que le syst\u00e8me puisse \u00e9voluer au rythme de l&#039;augmentation de la demande.<\/p>\n<p>Par ailleurs, les conditions du site et l&#039;espace disponible sont des facteurs cl\u00e9s qui influenceront l&#039;agencement et d\u00e9termineront le type de sous-station. Il est \u00e9galement n\u00e9cessaire de s\u00e9lectionner des syst\u00e8mes de protection et de mise \u00e0 la terre appropri\u00e9s afin de respecter les normes et de v\u00e9rifier la fiabilit\u00e9 et la s\u00e9curit\u00e9 du syst\u00e8me.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Final_Thought\"><\/span>Derni\u00e8re r\u00e9flexion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>En tant que fabricant professionnel d&#039;armoires \u00e9lectriques, KDM peut vous fournir des transformateurs, des disjoncteurs, <a href=\"https:\/\/www.kdmsteel.com\/fr\/panneau-relais-de-sous-station\/\">panneaux \u00e9lectriques<\/a>\u00a0et des armoires install\u00e9es dans les sous-stations. Nos produits utilisent des mat\u00e9riaux de haute qualit\u00e9 et des proc\u00e9d\u00e9s de fabrication avanc\u00e9s. Notre \u00e9quipe de professionnels propose des services complets et personnalis\u00e9s. N&#039;h\u00e9sitez pas \u00e0 nous contacter pour toute question. <a href=\"https:\/\/www.kdmsteel.com\/fr\/contact\/\">Contactez-nous<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>What is the role of electrical substations in modern power systems? What types exist? This article is intended to help electrical engineers and industrial facility managers understand how electrical substations work, their key components, and the different types, helping you make the right choice for your project. What Is an Electrical Substation? Electrical substation is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":50329,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"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":"default","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":"","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":[1],"tags":[],"class_list":["post-50320","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What Is an Electrical Substation?\u2014Ultimate Guide for You - KDM Steel<\/title>\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.kdmsteel.com\/fr\/quest-ce-quune-sous-station-electrique\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is an Electrical Substation?\u2014Ultimate Guide for You - KDM Steel\" \/>\n<meta property=\"og:description\" content=\"What is the role of electrical substations in modern power systems? 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