{"id":829,"date":"2023-12-18T14:49:26","date_gmt":"2023-12-18T06:49:26","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&#038;p=829"},"modified":"2024-09-05T16:31:47","modified_gmt":"2024-09-05T08:31:47","slug":"lightning-protection-solutions-for-large-scale-grid-connected-photovoltaic-power-stations","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/fr\/blog\/lightning-protection-solutions-for-large-scale-grid-connected-photovoltaic-power-stations\/","title":{"rendered":"Solutions de protection contre la foudre pour les grandes centrales photovolta\u00efques connect\u00e9es au r\u00e9seau"},"content":{"rendered":"<strong>L'influence de la foudre sur un syst\u00e8me de production d'\u00e9nergie photovolta\u00efque connect\u00e9 au r\u00e9seau \u00e0 grande \u00e9chelle\u00a0:<\/strong>\r\n\r\nThe harm of lightning to large-scale grid-connected photovoltaic power generation system is mainly divided into two types: direct lightning and inductive lightning.\r\n\r\nDirect lightning is a strong discharge between thunderclouds and ground equipment or lines, lightning flow through the object, will have a destructive effect of thermal and force effects, accompanied by electromagnetic effects and discharge on nearby objects. Most of the panels are installed on outdoor roofs or open places, so lightning is likely to directly hit the solar photovoltaic panels or brackets and transmission lines, causing damage to the equipment and even melting and burning.\r\n\r\nInductive lightning: lightning discharge will produce electrostatic effects and electromagnetic induction on nearby conductors, which can cause sparks between metal parts and cause fires when serious, which will damage electrical equipment such as solar panels and controllers or inverters, power distribution units, and AC loads.\r\n\r\nGround potential counterattack: In a solar power supply system with external lightning protection, lightning is introduced to the ground by the external lightning protection device. As a result, a high voltage is generated on the ground network and enters the device through the ground cable of the device. As a result, the controller, inverter, AC or DC load devices are damaged.\r\n\r\n<strong>Base de conception de la protection contre la foudre pour un syst\u00e8me de production d\u2019\u00e9nergie photovolta\u00efque centralis\u00e9 connect\u00e9 au r\u00e9seau \u00e0 grande \u00e9chelle\u00a0:<\/strong>\r\n\r\nThe lightning protection of large-scale centralized grid-connected photovoltaic power generation system is different from that of general building electrical lightning protection, so it is necessary to design a reasonable and reliable lightning protection scheme according to the characteristics of large-scale centralized grid-connected photovoltaic power stations.\r\n\r\nLightning risk assessment for large-scale centralized grid-connected photovoltaic power stations: the assessment of lightning risk mainly follows the IEC 62305-2.\r\n\r\n<strong>Mesures de protection contre la foudre pour les syst\u00e8mes de production d'\u00e9nergie photovolta\u00efque centralis\u00e9s et connect\u00e9s au r\u00e9seau \u00e0 grande \u00e9chelle\u00a0:<\/strong>\r\n\r\n<strong>1, protection directe contre la foudre\u00a0:<\/strong>\r\n\r\nFor large-scale centralized grid-connected photovoltaic power generation systems, due to the large number of photovoltaic equipment concentrated in the outdoor exposure and occupy a large amount of outdoor space, it is extremely vulnerable to the threat of lightning when thunderstorms occur. In order to ensure that the solar panels exposed outdoors are not damaged by direct lightning strikes, it should be set up direct lightning protection devices, the specific measures are as follows:\r\n\r\nA, Lightning arrester system\r\n\r\nB, Down-conductor system\r\n\r\nC, Grounded counterpoise\r\n\r\nWhen installing and setting the lightning rod, should fully consider whether the protection range of the lightning rod can cover all photovoltaic equipment.\r\n\r\n<strong>2, protection inductive contre la foudre\u00a0:<\/strong>\r\n\r\nEn raison de la tension inductive provoqu\u00e9e par la d\u00e9charge de foudre et de la surtension provoqu\u00e9e par la foudre, les modules photovolta\u00efques et les onduleurs peuvent \u00eatre endommag\u00e9s. Les composants \u00e9lectroniques des \u00e9quipements photovolta\u00efques centralis\u00e9s et connect\u00e9s au r\u00e9seau \u00e0 grande \u00e9chelle sont g\u00e9n\u00e9ralement plus sensibles et les co\u00fbts de maintenance et de r\u00e9paration de l'\u00e9quipement sont \u00e9lev\u00e9s. Une protection efficace contre les surtensions est donc essentielle. R\u00e9duisez les dommages aux \u00e9quipements caus\u00e9s par les surtensions et les surtensions de foudre en installant des parasurtenseurs sur les c\u00e2bles sous tension. Leles mesures sp\u00e9cifiques sont les suivantes :\r\n\r\n<strong>A, protection contre les surtensions\u00a0:<\/strong>\r\n\r\nDc side (combiner box\/DC panel): Surge protection devices are installed at each DC input end of the inverter.\r\n\r\nLarge distributed photovoltaic power generation system optional: BRITEC BRPV3-1000T1\/BRPV3-1000 photovoltaic power supply lightning arrester.\r\n\r\nSmall distributed photovoltaic power generation system optional: BRITEC BR-40 24\/BR-40 48 DC 24V\/48V power surge arrester.\r\n\r\nAc side (AC panel): Install a surge protector in the control cabinet to prevent lightning waves from being invaded by the protective cable.\r\n\r\nSingle-phase Optional: BRITEC BR-40 2P 40KA single-phase power surge arrester.\r\n\r\nThree-phase Optional: BRITEC BR-40 4P 40 kA three-phase power surge arrester.\r\n\r\n<strong>B, blindage \u00e9lectromagn\u00e9tique\u00a0:<\/strong>\r\n\r\nLe blindage \u00e9lectromagn\u00e9tique des b\u00e2timents, des lignes et des \u00e9quipements vis-\u00e0-vis du monde ext\u00e9rieur emp\u00eache les impulsions \u00e9lectromagn\u00e9tiques et l'induction de hautes tensions. Le blindage peut \u00eatre une coque conductrice scell\u00e9e, une gaine coaxiale ou un tube de c\u00e2ble qui traverse le c\u00e2ble ou un fil de protection hautement expos\u00e9 est pos\u00e9 sur le c\u00e2ble dans la tranch\u00e9e du c\u00e2ble. La coque du dispositif de blindage doit \u00eatre connect\u00e9e au fil de terre de l'\u00e9quipement.","protected":false},"featured_media":830,"parent":0,"menu_order":162,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-829","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"The harm of lightning to large-scale grid-connected photovoltaic power generation system is mainly divided into two types: direct lightning and inductive lightning.","txt":"<strong>The influence of lightning on large-scale grid-connected photovoltaic power generation system:<\/strong>\r\n\r\nThe harm of lightning to large-scale grid-connected photovoltaic power generation system is mainly divided into two types: direct lightning and inductive lightning.\r\n\r\nDirect lightning is a strong discharge between thunderclouds and ground equipment or lines, lightning flow through the object, will have a destructive effect of thermal and force effects, accompanied by electromagnetic effects and discharge on nearby objects. Most of the panels are installed on outdoor roofs or open places, so lightning is likely to directly hit the solar photovoltaic panels or brackets and transmission lines, causing damage to the equipment and even melting and burning.\r\n\r\nInductive lightning: lightning discharge will produce electrostatic effects and electromagnetic induction on nearby conductors, which can cause sparks between metal parts and cause fires when serious, which will damage electrical equipment such as solar panels and controllers or inverters, power distribution units, and AC loads.\r\n\r\nGround potential counterattack: In a solar power supply system with external lightning protection, lightning is introduced to the ground by the external lightning protection device. As a result, a high voltage is generated on the ground network and enters the device through the ground cable of the device. As a result, the controller, inverter, AC or DC load devices are damaged.\r\n\r\n<strong>Design basis of lightning protection for large-scale centralized grid-connected photovoltaic power generation system:<\/strong>\r\n\r\nThe lightning protection of large-scale centralized grid-connected photovoltaic power generation system is different from that of general building electrical lightning protection, so it is necessary to design a reasonable and reliable lightning protection scheme according to the characteristics of large-scale centralized grid-connected photovoltaic power stations.\r\n\r\nLightning risk assessment for large-scale centralized grid-connected photovoltaic power stations: the assessment of lightning risk mainly follows the IEC 62305-2.\r\n\r\n<strong>Lightning protection measures for large-scale centralized grid-connected photovoltaic power generation system:<\/strong>\r\n\r\n<strong>1, Direct lightning protection:<\/strong>\r\n\r\nFor large-scale centralized grid-connected photovoltaic power generation systems, due to the large number of photovoltaic equipment concentrated in the outdoor exposure and occupy a large amount of outdoor space, it is extremely vulnerable to the threat of lightning when thunderstorms occur. In order to ensure that the solar panels exposed outdoors are not damaged by direct lightning strikes, it should be set up direct lightning protection devices, the specific measures are as follows:\r\n\r\nA, Lightning arrester system\r\n\r\nB, Down-conductor system\r\n\r\nC, Grounded counterpoise\r\n\r\nWhen installing and setting the lightning rod, should fully consider whether the protection range of the lightning rod can cover all photovoltaic equipment.\r\n\r\n<strong>2, Inductive lightning protection:<\/strong>\r\n\r\nDue to the inductive voltage caused by lightning discharge and the surge caused by lightning may damage the photovoltaic modules and inverters, and the electronic components in large-scale centralized grid-connected photovoltaic equipment are usually more sensitive, and the maintenance and repair costs of the equipment are high, so effective surge protection is essential. Reduce damage to equipment caused by surges and lightning overvoltage by installing surge protectors on live cables. The specific measures are as follows:\r\n\r\n<strong>A, Surge protection:<\/strong>\r\n\r\nDc side (combiner box\/DC panel): Surge protection devices are installed at each DC input end of the inverter.\r\n\r\nLarge distributed photovoltaic power generation system optional: BRITEC BRPV3-1000T1\/BRPV3-1000 photovoltaic power supply lightning arrester.\r\n\r\nSmall distributed photovoltaic power generation system optional: BRITEC BR-40 24\/BR-40 48 DC 24V\/48V power surge arrester.\r\n\r\nAc side (AC panel): Install a surge protector in the control cabinet to prevent lightning waves from being invaded by the protective cable.\r\n\r\nSingle-phase Optional: BRITEC BR-40 2P 40KA single-phase power surge arrester.\r\n\r\nThree-phase Optional: BRITEC BR-40 4P 40 kA three-phase power surge arrester.\r\n\r\n<strong>B, Electromagnetic shielding:<\/strong>\r\n\r\nElectromagnetic shielding of buildings, lines and equipment to the outside world prevents electromagnetic pulses and induction of high voltages. The shielding can be a sealed conductive shell, a coaxial jacket or a cable tube that passes through the cable or a high exposed protection wire is laid on the cable in the cable trench. The shell of the shielding device should be connected to the ground wire of the equipment."},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/blog\/829","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\/830"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/media?parent=829"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/fr\/wp-json\/wp\/v2\/blog_category?post=829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}