一、高壓開關柜的組成部件有哪些
高壓(ya)開關柜(ju)是指(zhi)用(yong)于電(dian)(dian)(dian)(dian)(dian)力系統發電(dian)(dian)(dian)(dian)(dian)、輸電(dian)(dian)(dian)(dian)(dian)、配電(dian)(dian)(dian)(dian)(dian)、電(dian)(dian)(dian)(dian)(dian)能(neng)轉換和消耗中起通斷、控制或(huo)保(bao)護等(deng)作用(yong)的(de)電(dian)(dian)(dian)(dian)(dian)氣設備,主要用(yong)于3.6kV~550kV的(de)電(dian)(dian)(dian)(dian)(dian)器(qi)產品,其結構由柜(ju)體(ti)、主母線(xian)室、斷路器(qi)室、電(dian)(dian)(dian)(dian)(dian)纜(lan)室內(nei)、繼(ji)電(dian)(dian)(dian)(dian)(dian)器(qi)儀(yi)表室組成(cheng):
1、柜體材料
柜體(ti)(ti)材料眾(zhong)多,焊接柜用(yong)的(de)是冷軋鋼(gang)板(ban)(ban)或角鋼(gang),組裝柜用(yong)的(de)是敷(fu)鋁(lv)鋅鋼(gang)板(ban)(ban)或鍍鋅鋼(gang)板(ban)(ban),還(huan)有用(yong)不銹鋼(gang)板(ban)(ban)或鋁(lv)板(ban)(ban)的(de),柜體(ti)(ti)由(you)殼(ke)體(ti)(ti)、電器元件(包括絕緣(yuan)件)、各種機(ji)構(gou)、二次端(duan)子及(ji)連線等組成。
2、主母線室
母(mu)線(xian)(xian)(xian)室布置(zhi)在開關柜(ju)的(de)背面上(shang)部,作安裝布置(zhi)三相(xiang)高壓交流母(mu)線(xian)(xian)(xian)及(ji)通過支路母(mu)線(xian)(xian)(xian)實現與靜觸頭連接(jie)之(zhi)用(yong)。全部母(mu)線(xian)(xian)(xian)用(yong)絕緣套(tao)(tao)管塑封。在母(mu)線(xian)(xian)(xian)穿(chuan)越開關柜(ju)隔板時(shi),用(yong)母(mu)線(xian)(xian)(xian)套(tao)(tao)管固定。如果(guo)出(chu)現內部故障電弧,能限制事故蔓延到鄰柜(ju),并(bing)能保障母(mu)線(xian)(xian)(xian)的(de)機械強度(du)。
3、斷路器室
又稱手(shou)車(che)室,斷(duan)路器(qi)室內安裝(zhuang)了特定的(de)導軌(gui),供斷(duan)路器(qi)手(shou)車(che)在(zai)內滑行與(yu)工作(zuo)。手(shou)車(che)能在(zai)工作(zuo)位(wei)置(zhi)、試驗位(wei)置(zhi)之間移(yi)動。靜觸頭的(de)隔板(ban)(活門)安裝(zhuang)在(zai)手(shou)車(che)室的(de)后壁(bi)上。手(shou)車(che)從試驗位(wei)置(zhi)移(yi)動到工作(zuo)位(wei)置(zhi)過程中,隔板(ban)自動打開(kai),反方向移(yi)動手(shou)車(che)則完全(quan)復合,從而保(bao)障了操作(zuo)人員不觸及帶電體。
4、電纜室
電纜(lan)室內安裝有電流互(hu)感器、接地開關、避雷器(過電壓保護器)以及電纜(lan)等附屬設備,并在其底部配制(zhi)開縫的可卸鋁板,以確保現場施工的方便。
5、繼電器儀表室
繼(ji)電(dian)(dian)器(qi)(qi)室的面(mian)板上,安裝有(you)微(wei)機保(bao)護(hu)裝置、操作把手、保(bao)護(hu)出口壓板、儀表、狀態(tai)指示燈(或狀態(tai)顯示器(qi)(qi))等;繼(ji)電(dian)(dian)器(qi)(qi)室內,安裝有(you)端子排、微(wei)機保(bao)護(hu)控(kong)制回路直流(liu)電(dian)(dian)源開關(guan)、微(wei)機保(bao)護(hu)工(gong)作直流(liu)電(dian)(dian)源、儲(chu)能電(dian)(dian)機工(gong)作電(dian)(dian)源開關(guan)(直流(liu)或交流(liu)),以(yi)及(ji)特殊要(yao)求的二次設備。
二、高壓開關柜內有哪些電器元件
高壓開關(guan)柜(ju)內有許多電(dian)器(qi)元件,一般(ban)可分為一次電(dian)器(qi)元件和二次電(dian)器(qi)元件兩類(lei):
1、開關柜內常用一次電器元件(主回路設備)
主要有(you)電流(liu)互感器、電壓(ya)(ya)(ya)互感器、接(jie)地開(kai)關(guan)、避雷器(阻容吸收器)、隔離開(kai)關(guan)、高(gao)壓(ya)(ya)(ya)斷路器、高(gao)壓(ya)(ya)(ya)接(jie)觸器、高(gao)壓(ya)(ya)(ya)熔斷器、變壓(ya)(ya)(ya)器、高(gao)壓(ya)(ya)(ya)帶電顯示器、絕(jue)緣件(jian)(穿墻套(tao)管(guan)、觸頭盒、絕(jue)緣子、絕(jue)緣熱(re)縮護套(tao))、高(gao)壓(ya)(ya)(ya)電抗器、負荷開(kai)關(guan)、高(gao)壓(ya)(ya)(ya)單相(xiang)并(bing)聯電容器等。
2、開關柜內常用的主要二次電器元件
二(er)次電(dian)(dian)(dian)器(qi)元件(jian)是指對一次設備進(jin)行監察、控制、測(ce)量、調(diao)整和保護的設備,主要有繼(ji)電(dian)(dian)(dian)器(qi)、電(dian)(dian)(dian)度表(biao)(biao)、電(dian)(dian)(dian)流表(biao)(biao)、電(dian)(dian)(dian)壓表(biao)(biao)、功率表(biao)(biao)、功率因數表(biao)(biao)、頻率表(biao)(biao)、熔(rong)斷器(qi)、空氣開關(guan)、轉(zhuan)換開關(guan)、信號燈(deng)、電(dian)(dian)(dian)阻、按(an)鈕(niu)、微(wei)機綜合保護裝(zhuang)置等(deng)。