{"id":848,"date":"2023-12-18T15:16:59","date_gmt":"2023-12-18T07:16:59","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=848"},"modified":"2024-09-05T16:39:56","modified_gmt":"2024-09-05T08:39:56","slug":"protection-measures-of-inductive-lightning-in-spc-exchange","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/fr\/blog\/protection-measures-of-inductive-lightning-in-spc-exchange\/","title":{"rendered":"Mesures de protection contre la foudre inductive dans l'\u00e9change SPC"},"content":{"rendered":"Power communication is an indispensable and important part of modern power system and one of the three pillars for the safe and stable operation of modern power grid. SPC Exchange is an important part of power communication network. Once a fault occurs, the loss caused is not only economical. On the other hand, what is more serious is the potential threat to the grid security. Therefore, it is particularly important to strengthen the security protection of the SPC Exchange.\r\n\r\nNow many units have installed SPC Exchange, and the main component of the SPC Exchange is the integrated circuit (IC). The IC\u2019s anti-interference ability is relatively low, and even the lightning electromagnetic pulse (LEMP) induced from the line can break down the IC components. Therefore, the SPC Exchange is prone to lightning accidents. The damaged parts are mostly relay boards, user boards, billing cards and power supply parts. Due to the high value of these motherboards, in order to reduce economic losses, some users have tried various methods to protect the switch, and even insured the switch with an insurance company, but the loss caused by the interruption of communication caused by lightning strikes is irreparable. Therefore, the lightning protection of the SPC Exchange is particularly important.\r\n\r\n<strong>La connexion \u00e9quipotentielle de l'interrupteur<\/strong>\r\n\r\nLe but de la connexion \u00e9quipotentielle de l'interrupteur est de r\u00e9duire la diff\u00e9rence de potentiel entre divers composants et syst\u00e8mes m\u00e9talliques dans l'espace o\u00f9 une protection contre la foudre est requise.\r\n\r\n<strong>La qualit\u00e9 des installations de protection contre la foudre des b\u00e2timents<\/strong>\r\n\r\nSelon les dispositions pertinentes du GB50057-94, le b\u00e2timent de SPC Exchange doit disposer d'installations permettant de pr\u00e9venir les coups de foudre directs. Lorsque la hauteur du b\u00e2timent d\u00e9passe 30 m (protection contre la foudre de type 1), 45 m (protection contre la foudre de type 2) et 60 m (protection contre la foudre de type 3), les gros objets m\u00e9talliques tels que les garde-corps, les portes et les fen\u00eatres sur le mur ext\u00e9rieur de la hauteur ci-dessus doivent \u00eatre connect\u00e9s au dispositif de protection contre la foudre. De plus, la r\u00e9sistance \u00e0 la terre de la foudreles installations de protection doivent \u00e9galement r\u00e9pondre aux exigences des sp\u00e9cifications pertinentes.\r\n\r\n<strong>La zone de protection contre la foudre (LPZ) \u00e0 l'int\u00e9rieur du b\u00e2timent<\/strong>\r\n\r\nSelon les dispositions pertinentes de la norme IEC1312-1, le b\u00e2timent est divis\u00e9 en 4 zones\u00a0: LPZOA, les objets dans cette zone peuvent \u00eatre directement frapp\u00e9s par la foudre\u00a0; LPZOB, les objets dans cette zone ne peuvent pas \u00eatre directement frapp\u00e9s par la foudre, et le champ \u00e9lectromagn\u00e9tique dans la zone n'est pas att\u00e9nu\u00e9 ; LPZ1, les objets dans cette zone ne peuvent pas \u00eatre directement frapp\u00e9s par la foudre, et le champ \u00e9lectromagn\u00e9tique dans la zone peut s'att\u00e9nuer\u00a0; LPZ2 est la zone de suivi de la protection contre la foudre. Selon le principe de zonage ci-dessus, SPCL'\u00e9change doit \u00eatre plac\u00e9 autant que possible dans la zone LPZ2 pour r\u00e9duire l'impact des impulsions \u00e9lectromagn\u00e9tiques de foudre sur l'interrupteur.\r\n\r\n<strong>L'emplacement de la salle d'\u00e9change SPC<\/strong>\r\n\r\nThe location of the SPC Exchange room should be determined in combination with the terrain location and other factors. For high-rise buildings, the general practice is to set the room in the space below the 4th floor and above the first floor. In humid areas, it is not advisable to set up the room on the first floor.\r\n\r\nIn modern communication systems, a well-designed lightning protection system is critical to the safe operation of equipment, not just for SPC Exchange. To ensure the secure operation of the entire communication network, you must strictly follow the principles of comprehensive lightning protection and plan lightning protection from all possible routes.","protected":false},"featured_media":849,"parent":0,"menu_order":153,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-848","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"Power communication is an indispensable and important part of modern power system and one of the three pillars for the safe and stable operation of modern power grid. SPC Exchange is an important part of power communication network.","txt":"Power communication is an indispensable and important part of modern power system and one of the three pillars for the safe and stable operation of modern power grid. SPC Exchange is an important part of power communication network. Once a fault occurs, the loss caused is not only economical. On the other hand, what is more serious is the potential threat to the grid security. Therefore, it is particularly important to strengthen the security protection of the SPC Exchange.\r\n\r\nNow many units have installed SPC Exchange, and the main component of the SPC Exchange is the integrated circuit (IC). The IC\u2019s anti-interference ability is relatively low, and even the lightning electromagnetic pulse (LEMP) induced from the line can break down the IC components. Therefore, the SPC Exchange is prone to lightning accidents. The damaged parts are mostly relay boards, user boards, billing cards and power supply parts. Due to the high value of these motherboards, in order to reduce economic losses, some users have tried various methods to protect the switch, and even insured the switch with an insurance company, but the loss caused by the interruption of communication caused by lightning strikes is irreparable. Therefore, the lightning protection of the SPC Exchange is particularly important.\r\n\r\n<strong>The equipotential connection of the switch<\/strong>\r\n\r\nThe purpose of equipotential connection of the switch is to reduce the potential difference between various metal components and systems in the space where lightning protection is required.\r\n\r\n<strong>The quality of building lightning protection facilities<\/strong>\r\n\r\nAccording to the relevant provisions of GB50057-94, the building of SPC Exchange must have facilities for preventing direct lightning strikes. When the height of the building exceeds 30m (type 1 lightning protection), 45m (type 2 lightning protection) and 60m (type 3 lightning protection), the large metal objects such as railings, doors and windows on the outer wall of the above height should be connected to the lightning protection device. In addition, the grounding resistance of lightning protection facilities should also meet the requirements of relevant specifications.\r\n\r\n<strong>The lightning protection zone (LPZ) inside the building<\/strong>\r\n\r\nAccording to the relevant provisions of IEC1312-1, the building is divided into 4 areas: LPZOA, objects in this area may be directly struck by lightning; LPZOB, objects in this area cannot be directly struck by lightning, and the electromagnetic field in the area is not attenuated; LPZ1, objects in this area cannot be directly struck by lightning, and the electromagnetic field in the area may attenuate; LPZ2 is the follow-up lightning protection area. According to the above zoning principle, SPC Exchange should be placed in the LPZ2 area as much as possible to reduce the impact of lightning electromagnetic pulse on the switch.\r\n\r\n<strong>The location of the SPC Exchange room<\/strong>\r\n\r\nThe location of the SPC Exchange room should be determined in combination with the terrain location and other factors. For high-rise buildings, the general practice is to set the room in the space below the 4th floor and above the first floor. In humid areas, it is not advisable to set up the room on the first floor.\r\n\r\nIn modern communication systems, a well-designed lightning protection system is critical to the safe operation of equipment, not just for SPC Exchange. To ensure the secure operation of the entire communication network, you must strictly follow the principles of comprehensive lightning protection and plan lightning protection from all possible routes."},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/blog\/848","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/media\/849"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/media?parent=848"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/blog_category?post=848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}