在(zai)我國(guo)燃氣場站中低壓(ya)配電(dian)系統一般(ban)為(wei)(wei)220/380V供電(dian)，其供電(dian)接地形式(shi)主要有TN-S和TN-C-S兩種(zhong)，按(an)照我國(guo)防雷(lei)(lei)技(ji)術規范(fan)的相關(guan)要求，為(wei)(wei)了(le)防止雷(lei)(lei)電(dian)流的侵入及(ji)減少電(dian)磁脈沖不必要的干擾，在(zai)對架空(kong)敷設(she)電(dian)源進行電(dian)磁屏(ping)蔽之外(wai)，還需要采用直流浪(lang)涌保(bao)護(hu)器的保(bao)護(hu)措(cuo)施(shi)，具體方法如下：。

　　1.將直流浪涌保護器安裝在LPZOA或LPZOB與LPZO1區交界處從室外引來的線路上，確保其通過的電源線路的雷電流幅值為10/350μs，當保護線路上出現屏蔽情況下，需要將每組SPD的雷電流按電流幅值的百分之三十進行定型，具體是在電源總配電箱內，直流浪涌保護器選配通(tong)流(liu)容量(liang)為100KA的開(kai)關型(xing)一(yi)級(ji)電源浪涌保護器(qi)(KSP-25KA/350/4P/M)。

　　2.依據雷(lei)電(dian)流分流理論，在(zai)(zai)各分級(ji)配電(dian)柜內選(xuan)配8/20μs波型(xing)，最大放電(dian)電(dian)流為80KA的(de)二級(ji)電(dian)源浪涌保(bao)護器(KSP-80KA/4P/M)，能將4KV的(de)線路殘余感應雷(lei)擊過電(dian)壓限(xian)制(zhi)在(zai)(zai)2.5KV以(yi)下。

　　3.精細化防(fang)雷，在各重要設備(bei)之前端安裝8/20μs波(bo)型，最大放電(dian)電(dian)流(liu)為40KA的三級電(dian)源浪(lang)涌保(bao)護器(KSP-40KA/4P/M)，同時，為確保(bao)過電(dian)壓或電(dian)流(liu)不造成終端設備(bei)損(sun)壞，應(ying)在用電(dian)設備(bei)前端加裝電(dian)源精細防(fang)雷保(bao)護，在電(dian)腦設備(bei)前端安裝防(fang)雷插排(pai)(KS-CP-42N/M)。

　　光(guang)伏(fu)電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)的(de)分(fen)類(lei)(lei)方法有很多種，從(cong)其非線性元(yuan)件(jian)的(de)結構原理(li)上可(ke)以分(fen)為(wei)電(dian)(dian)(dian)壓(ya)開關型電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)，電(dian)(dian)(dian)壓(ya)限制型電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)，復(fu)合型電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)，電(dian)(dian)(dian)直流浪涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)壓(ya)開關型光(guang)伏(fu)電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)的(de)非線型元(yuan)件(jian)為(wei)放電(dian)(dian)(dian)間隙，氣體放電(dian)(dian)(dian)管(guan)(guan)，閘流管(guan)(guan)等(deng)(deng)，電(dian)(dian)(dian)壓(ya)限制型光(guang)伏(fu)電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)的(de)非線型元(yuan)件(jian)為(wei)SIC，ZnO壓(ya)敏電(dian)(dian)(dian)阻等(deng)(deng)金(jin)屬氧化物(wu)（MOV），復(fu)合型光(guang)伏(fu)電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)兩(liang)類(lei)(lei)元(yuan)件(jian)均(jun)在使用(yong)，從(cong)用(yong)途上光(guang)伏(fu)電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)可(ke)分(fen)為(wei)電(dian)(dian)(dian)源光(guang)伏(fu)電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)，信號光(guang)伏(fu)電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)，天(tian)饋(kui)線光(guang)伏(fu)電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)，按照(zhao)試驗等(deng)(deng)級分(fen)類(lei)(lei)，又可(ke)分(fen)為(wei)Ⅰ類(lei)(lei)，Ⅱ類(lei)(lei)，Ⅲ類(lei)(lei)電(dian)(dian)(dian)涌(yong)(yong)保(bao)護(hu)(hu)器(qi)(qi)。

　　電(dian)(dian)壓(ya)限制(zhi)型光伏電(dian)(dian)涌(yong)保護(hu)器(qi)(qi)在沒有(you)電(dian)(dian)涌(yong)時(shi)具有(you)高(gao)阻(zu)(zu)(zu)抗，但是隨著(zhu)電(dian)(dian)涌(yong)電(dian)(dian)流(liu)和電(dian)(dian)壓(ya)的(de)(de)上(shang)升，其阻(zu)(zu)(zu)抗將持(chi)續(xu)減小，常(chang)用的(de)(de)非線性(xing)元件(jian)使壓(ya)敏(min)電(dian)(dian)阻(zu)(zu)(zu)和抑(yi)制(zhi)二極管，這類(lei)光伏電(dian)(dian)涌(yong)保護(hu)器(qi)(qi)有(you)時(shi)也稱為(wei)箝位型光伏電(dian)(dian)涌(yong)保護(hu)器(qi)(qi)，限壓(ya)型光伏電(dian)(dian)涌(yong)保護(hu)器(qi)(qi)利用金屬氧化(hua)物(wu)可變電(dian)(dian)阻(zu)(zu)(zu)的(de)(de)特性(xing)，在系統正常(chang)工作電(dian)(dian)壓(ya)下(xia)金屬氧化(hua)物(wu)呈(cheng)直流(liu)浪涌(yong)保護(hu)器(qi)(qi)高(gao)阻(zu)(zu)(zu)態(tai)，一旦系統中有(you)過(guo)電(dian)(dian)壓(ya)出現并達到一定數值時(shi)，電(dian)(dian)阻(zu)(zu)(zu)值將迅速(su)下(xia)降，近似短路狀態(tai)，將系統中的(de)(de)過(guo)電(dian)(dian)壓(ya)通(tong)過(guo)壓(ya)敏(min)元件(jian)形成對地泄(xie)放(fang)的(de)(de)大電(dian)(dian)流(liu)，金屬氧化(hua)物(wu)電(dian)(dian)涌(yong)保護(hu)器(qi)(qi)在應用中幾乎不會出現續(xu)流(liu)，電(dian)(dian)壓(ya)限制(zhi)型光伏電(dian)(dian)涌(yong)保護(hu)器(qi)(qi)是最常(chang)用的(de)(de)電(dian)(dian)涌(yong)保護(hu)器(qi)(qi)件(jian)。

　　電(dian)(dian)(dian)壓(ya)開(kai)關(guan)型(xing)光(guang)伏電(dian)(dian)(dian)涌(yong)(yong)保(bao)(bao)護(hu)(hu)器(qi)(qi)在沒有電(dian)(dian)(dian)涌(yong)(yong)時(shi)具有高阻(zu)(zu)抗(kang)，有浪涌(yong)(yong)電(dian)(dian)(dian)壓(ya)時(shi)立即變成低阻(zu)(zu)抗(kang)，電(dian)(dian)(dian)壓(ya)開(kai)關(guan)型(xing)光(guang)伏電(dian)(dian)(dian)涌(yong)(yong)保(bao)(bao)護(hu)(hu)器(qi)(qi)常(chang)用的元件有放(fang)(fang)電(dian)(dian)(dian)間隙，氣(qi)體(ti)放(fang)(fang)電(dian)(dian)(dian)管(guan)，閘流管(guan)（硅(gui)可(ke)控(kong)整(zheng)理器(qi)(qi)）和三端雙向可(ke)控(kong)硅(gui)開(kai)關(guan)元件，這類(lei)光(guang)伏電(dian)(dian)(dian)涌(yong)(yong)保(bao)(bao)護(hu)(hu)器(qi)(qi)有時(shi)也稱為“短(duan)路型(xing)光(guang)伏電(dian)(dian)(dian)涌(yong)(yong)保(bao)(bao)護(hu)(hu)器(qi)(qi)”。

　　復合(he)型(xing)光(guang)(guang)伏(fu)電(dian)(dian)(dian)涌保護器(qi)(qi)是由電(dian)(dian)(dian)壓(ya)(ya)開關型(xing)元件(jian)和電(dian)(dian)(dian)壓(ya)(ya)限制型(xing)元件(jian)組(zu)成光(guang)(guang)伏(fu)電(dian)(dian)(dian)涌保護器(qi)(qi)，其特性隨所加電(dian)(dian)(dian)壓(ya)(ya)的(de)特性可以表現(xian)為電(dian)(dian)(dian)壓(ya)(ya)開關型(xing)，電(dian)(dian)(dian)壓(ya)(ya)限制型(xing)或兩者皆有。

　　江蘇(su)人民電(dian)氣(qi)是一家(jia)專(zhuan)業生產直(zhi)流浪(lang)涌保(bao)護(hu)器(qi)，電(dian)涌保(bao)護(hu)器(qi)，光伏浪(lang)涌防雷(lei)(lei)器(qi)，商業級防雷(lei)(lei)開關的廠家(jia)， 廠家(jia)直(zhi)銷供應，品(pin)質值得信賴，關于直(zhi)流浪(lang)涌保(bao)護(hu)器(qi)品(pin)牌，型號(hao)，參(can)數，功(gong)能(neng)，選型，介紹(shao)等問題，請(qing)來電(dian)咨詢0577-61777781//qyxlw.cn/。