在(zai)電(dian)氣自動化中運(yun)用無(wu)功(gong)(gong)補償技術，能(neng)有(you)效地降低無(wu)功(gong)(gong)功(gong)(gong)率，從另一個(ge)側面也就提升(sheng)了(le)有(you)功(gong)(gong)功(gong)(gong)率。在(zai)對有(you)功(gong)(gong)功(gong)(gong)率數值需求不(bu)變的情況下，可以通過減少無(wu)功(gong)(gong)功(gong)(gong)率、供電(dian)設備(bei)配電(dian)電(dian)容的數量和規模(mo)，提升(sheng)設備(bei)的發(fa)供電(dian)能(neng)力，挖掘設備(bei)發(fa)供電(dian)潛能(neng)。

純電(dian)容無功(gong)補償(chang)柜的(de)主要(yao)作用

在一定(ding)的(de)(de)有功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)下，功(gong)(gong)(gong)率(lv)因數越(yue)小(xiao)，所需的(de)(de)無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)越(yue)大(da)。為(wei)滿足用電(dian)的(de)(de)需求(qiu)，供電(dian)線路(lu)和變壓器的(de)(de)容(rong)量就需要(yao)增(zeng)加(jia)，這樣不僅要(yao)增(zeng)加(jia)供電(dian)投資、降低設備利用率(lv)，也將(jiang)增(zeng)加(jia)線路(lu)損耗。為(wei)了提高電(dian)網的(de)(de)經濟運行(xing)效率(lv)，根據電(dian)網中(zhong)的(de)(de)無(wu)功(gong)(gong)(gong)類型，人為(wei)的(de)(de)補(bu)償容(rong)性(xing)無(wu)功(gong)(gong)(gong)或感性(xing)無(wu)功(gong)(gong)(gong)來抵消線路(lu)的(de)(de)無(wu)功(gong)(gong)(gong)功(gong)(gong)(gong)率(lv)，這就是無(wu)功(gong)(gong)(gong)補(bu)償柜的(de)(de)主要(yao)用途(tu)。

較(jiao)(jiao)低電(dian)(dian)(dian)壓(ya)等(deng)級(ji)的(de)電(dian)(dian)(dian)容(rong)器經串聯后運行于(yu)(yu)較(jiao)(jiao)高(gao)電(dian)(dian)(dian)壓(ya)等(deng)級(ji)網絡(luo)中時(shi)(shi)，其(qi)各(ge)臺的(de)外殼對(dui)地之間，應(ying)通過加裝相(xiang)當(dang)于(yu)(yu)運行電(dian)(dian)(dian)壓(ya)等(deng)級(ji)的(de)絕緣(yuan)子等(deng)措施，使之可(ke)靠絕緣(yuan)。電(dian)(dian)(dian)容(rong)器經星形連接后，用于(yu)(yu)高(gao)一級(ji)額定電(dian)(dian)(dian)壓(ya)，且系中性點不(bu)接地時(shi)(shi)，電(dian)(dian)(dian)容(rong)器的(de)外殼應(ying)對(dui)地絕緣(yuan)。