低壓電容補償柜有什么作用?其組成結構是什么?
電容柜是用來補償無功功率,提高電能質量,從而降低線路損耗。電容柜可以分為高壓電容補償柜和低壓電容補償柜兩種(zhong)類型,二(er)者(zhe)的區別主要是投(tou)切(qie)變壓(ya)(ya)(ya)器級別不(bu)同(tong),低(di)壓(ya)(ya)(ya)電(dian)容(rong)補(bu)償(chang)裝置,是根據配(pei)電(dian)變壓(ya)(ya)(ya)器無功負(fu)荷狀況,自動分(fen)步投(tou)切(qie)并聯在配(pei)電(dian)變壓(ya)(ya)(ya)器1kV及以下(xia)母線(xian)的電(dian)容(rong)器組(zu),這篇文章我們(men)來了解一下(xia)低(di)壓(ya)(ya)(ya)電(dian)容(rong)柜的基礎(chu)知識。
一、作用
在配電(dian)(dian)(dian)系統正常(chang)工作中,因電(dian)(dian)(dian)壓(ya)波動(dong)大(da),無(wu)(wu)功功率(lv)增大(da),浪費大(da)量(liang)電(dian)(dian)(dian)能,因此需(xu)要通過提(ti)供(gong)相應(ying)的(de)額無(wu)(wu)功功率(lv),提(ti)高(gao)電(dian)(dian)(dian)能效率(lv)。根據配電(dian)(dian)(dian)變壓(ya)器(qi)(qi)無(wu)(wu)功負荷(he)狀況,自(zi)動(dong)分步投切并聯在配電(dian)(dian)(dian)變壓(ya)器(qi)(qi)1kV及以下母(mu)線的(de)電(dian)(dian)(dian)容器(qi)(qi)組,提(ti)供(gong)相應(ying)的(de)容性無(wu)(wu)功功率(lv),補償感性無(wu)(wu)功功率(lv),改善(shan)功率(lv)因數,穩定系統電(dian)(dian)(dian)壓(ya),從而降(jiang)低線路(lu)損(sun)耗(hao),提(ti)高(gao)變壓(ya)器(qi)(qi)傳輸(shu)(shu)容量(liang),提(ti)高(gao)整體的(de)電(dian)(dian)(dian)力(li)傳輸(shu)(shu)效率(lv)。同時具有負荷(he)監(jian)測(ce)功能,對電(dian)(dian)(dian)網運行(xing)(xing)狀況進行(xing)(xing)實(shi)時監(jian)測(ce),實(shi)現無(wu)(wu)功補償和配電(dian)(dian)(dian)監(jian)測(ce)二合一。
二、結構
低壓電(dian)容(rong)(rong)補(bu)償裝置一(yi)般由電(dian)抗(kang)器(qi)(qi)(qi)、電(dian)容(rong)(rong)器(qi)(qi)(qi)、隔(ge)離(li)開關、熔(rong)斷(duan)器(qi)(qi)(qi)、接(jie)觸(chu)器(qi)(qi)(qi)、電(dian)流(liu)互感(gan)器(qi)(qi)(qi)、快熔(rong)等(deng)二(er)次(ci)元件等(deng)組成(cheng)。圖片中這款低壓電(dian)容(rong)(rong)補(bu)償柜采用(yong)八個(ge)電(dian)抗(kang)器(qi)(qi)(qi)、八個(ge)電(dian)容(rong)(rong)器(qi)(qi)(qi)、八個(ge)接(jie)觸(chu)器(qi)(qi)(qi)以(yi)及八個(ge)熔(rong)斷(duan)器(qi)(qi)(qi)組成(cheng),合上(shang)刀熔(rong)開關和(he)斷(duan)路器(qi)(qi)(qi),控(kong)制(zhi)(zhi)器(qi)(qi)(qi)根據進線(xian)柜電(dian)壓和(he)電(dian)流(liu)的相位(wei)差輸出控(kong)制(zhi)(zhi)信號,控(kong)制(zhi)(zhi)交流(liu)接(jie)觸(chu)器(qi)(qi)(qi)閉(bi)合和(he)斷(duan)開,從而控(kong)制(zhi)(zhi)電(dian)容(rong)(rong)器(qi)(qi)(qi)投入和(he)退出。
三、使用條件
最(zui)高運行電壓(ya)≤1.1Un;
最大過(guo)載電流(liu)≤1.31 n;
周(zhou)圍環境溫度-25~+45℃;
室(shi)內(nei)相對濕(shi)度不超過90%(溫(wen)度為25℃時);
安裝(zhuang)地點海(hai)拔高度不超過2000m;沒有劇烈的(de)振動,垂(chui)直傾(qing)斜度不超過5度;
沒有導電性塵埃、火災(zai)、爆炸危險;沒有足以腐蝕金屬和破壞絕緣的氣體。
低壓電容補償柜根據補償的對象不同分為自動補償裝置和動態補償裝置,高壓電容補償裝置可以分為就地補償、集中補償、以及自動補償等,在選擇合適的電容補償裝置時,需要根據系統和負載的性質、大小、阻抗特性、運行方式等多方面因素。以上就是得潤電氣電容柜廠家小編分(fen)享的電氣知(zhi)識。
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