如今，無功(gong)補(bu)償(chang)設備的應用(yong)非(fei)常(chang)的廣泛(fan)，尤其是(shi)智能通訊型無功(gong)補(bu)償(chang)控(kong)制器。在電(dian)(dian)力系統中，由于無功(gong)功(gong)率不足，經常(chang)會出現(xian)使系統電(dian)(dian)壓以(yi)及功(gong)率因數降低(di)，從而損壞用(yong)電(dian)(dian)設備的現(xian)象，情況嚴重時可能還會造成電(dian)(dian)壓崩潰故障，導(dao)致系統瓦解，造成大面積的停電(dian)(dian)。

另(ling)外，功率(lv)因數與電(dian)(dian)(dian)(dian)壓的(de)降低，還會(hui)使電(dian)(dian)(dian)(dian)氣設(she)備(bei)得不到充分的(de)利用，這(zhe)會(hui)使得電(dian)(dian)(dian)(dian)能(neng)損耗增加，效率(lv)大大的(de)降低，限制(zhi)了線路的(de)送電(dian)(dian)(dian)(dian)能(neng)力(li)，從而影響(xiang)到電(dian)(dian)(dian)(dian)網的(de)安全(quan)運行以及(ji)用戶的(de)正常(chang)用電(dian)(dian)(dian)(dian)

在電(dian)(dian)(dian)力系統中，除了發電(dian)(dian)(dian)機是無功功率(lv)的(de)電(dian)(dian)(dian)源(yuan)以(yi)外(wai)，線路中的(de)電(dian)(dian)(dian)容也會產生(sheng)部分(fen)無功功率(lv)。因(yin)此，當以(yi)上兩種電(dian)(dian)(dian)源(yuan)不能(neng)滿(man)足電(dian)(dian)(dian)網無功功率(lv)的(de)要求(qiu)時，我們需(xu)要加裝智能(neng)通訊型(xing)無功補償控制器來解決這一問題。

使(shi)用(yong)低(di)壓(ya)(ya)智能無(wu)功(gong)(gong)補(bu)償(chang)控(kong)制器(qi)可(ke)以減少的(de)線路(lu)損(sun)耗在50%以上。線路(lu)的(de)損(sun)耗主要的(de)是(shi)無(wu)功(gong)(gong)分量引(yin)起(qi)的(de)損(sun)耗，若是(shi)無(wu)功(gong)(gong)線損(sun)降(jiang)低(di)50%~60%，一年便可(ke)以節電500億度左右。而且使(shi)用(yong)低(di)壓(ya)(ya)智能無(wu)功(gong)(gong)補(bu)償(chang)控(kong)制器(qi)進行無(wu)功(gong)(gong)補(bu)償(chang)后，便可(ke)提高用(yong)電承載率，變壓(ya)(ya)器(qi)可(ke)滿負荷運(yun)行。

例如一(yi)臺315KVA的變(bian)壓(ya)(ya)器(qi)(qi)，功率因數COSф=0.6負(fu)荷的變(bian)壓(ya)(ya)器(qi)(qi)只能提供優(you)質服務189KW的有功功率，不能承受300KW左右的容量，需(xu)(xu)購買一(yi)臺500KVA的變(bian)壓(ya)(ya)器(qi)(qi)替換(huan)。將功率因數由(you)0.6提高到0.98，相(xiang)當于擴大了63%,既有功由(you)189KW提高到309KW可(ke)基本滿(man)足需(xu)(xu)要的容量，便(bian)節省了一(yi)臺500KVA的變(bian)壓(ya)(ya)器(qi)(qi)