在5G網絡方面，5G基建特點是網點密集、數量多、電能功耗大，相對于4G基站更加靠近居民區、商場、寫字樓等，往往無法做到通過電網公司直供電，而會采取相關業主的配電設施轉供電。為了避免5G基站內的通信設備會造成諧波等電能質量污染相關問題，5G基站設備內也將配備相關的電力補償電容柜裝置，一(yi)方(fang)面(mian)確保(bao)5G基站的供電穩定，另一(yi)方(fang)面(mian)，這也(ye)可以(yi)減少對于轉供電網的電能質(zhi)量造成污(wu)染。

電力補償電容柜中的(de)(de)投切開(kai)(kai)關(guan)具有特殊的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁過(guo)(guo)零(ling)(ling)開(kai)(kai)關(guan)技術(shu)。 過(guo)(guo)零(ling)(ling)開(kai)(kai)關(guan)的(de)(de)偏移(yi)小(xiao)(xiao)于2.5。 開(kai)(kai)關(guan)浪涌電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)小(xiao)(xiao)于額定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)2.5倍(bei)。 智能(neng)(neng)控(kong)制(zhi)(zhi)單元通過(guo)(guo)在斷開(kai)(kai)開(kai)(kai)關(guan)的(de)(de)動(dong)(dong)態(tai)和(he)靜態(tai)觸點時檢測兩端電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓來控(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓的(de)(de)零(ling)(ling)交叉點的(de)(de)閉合：通過(guo)(guo)在投切開(kai)(kai)關(guan)的(de)(de)動(dong)(dong)態(tai)和(he)靜態(tai)觸點時檢測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)來控(kong)制(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓閉合時，控(kong)制(zhi)(zhi)其在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)過(guo)(guo)零(ling)(ling)點處斷開(kai)(kai)以實現(xian)“過(guo)(guo)零(ling)(ling)開(kai)(kai)關(guan)”功能(neng)(neng)，使低壓功率(lv)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器投入(ru)運行時產生(sheng)的(de)(de)浪涌電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)很小(xiao)(xiao)，并且(qie)沒(mei)有返回低壓功率(lv)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器時會產生(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)弧，從(cong)而延(yan)長了低壓功率(lv)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器和(he)開(kai)(kai)關(guan)設(she)備本(ben)身的(de)(de)壽命，還減(jian)少了開(kai)(kai)關(guan)設(she)備接(jie)通和(he)關(guan)閉時對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)影響(xiang)：提高(gao)了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)能(neng)(neng)質量(liang)。

近年來，國內電力補償電容柜市(shi)場發展極其迅猛，產(chan)品的(de)質量和(he)數(shu)量都(dou)有了大幅度(du)的(de)提(ti)升，相當一(yi)部分優勢企業(ye)已經開始問鼎國際市(shi)場并取(qu)得了不俗的(de)業(ye)績。據(ju)《中國無功(gong)補(bu)償(chang)裝置(zhi)行(xing)業(ye)產(chan)銷(xiao)需求與投資預測分析報(bao)告(gao)前瞻》顯示2011年(nian)中國無功(gong)補(bu)償(chang)裝置(zhi)行(xing)業(ye)的(de)產(chan)銷(xiao)規模和(he)利(li)潤總(zong)額均較上年(nian)有所(suo)增(zeng)(zeng)長。根據(ju)國家統計局統計，2011年(nian)中國無功(gong)補(bu)償(chang)裝置(zhi)制造行(xing)業(ye)實現工業(ye)總(zong)產(chan)值335.61億(yi)(yi)元，同(tong)比增(zeng)(zeng)長11.99%；實現產(chan)品銷(xiao)售收入(ru)330.20億(yi)(yi)元，同(tong)比增(zeng)(zeng)長9.99%；實現利(li)潤總(zong)額19.07億(yi)(yi)元，同(tong)比增(zeng)(zeng)長7.64%。

電力補償電容柜決不是無用功率，它的用處很大。電動機需要建立和維持旋轉磁場，使轉子轉動，從而帶動機械運動，電動機的轉子磁場就是靠從電源取得無功功率建立的。補償電容柜價格變(bian)壓(ya)(ya)器(qi)也(ye)同樣需(xu)要無功(gong)功(gong)率，才能使變(bian)壓(ya)(ya)器(qi)的一(yi)次(ci)線圈產生磁場，在二(er)次(ci)線圈感應出電(dian)壓(ya)(ya)。因(yin)此，沒有無功(gong)功(gong)率，電(dian)動(dong)機就不會轉動(dong)，變(bian)壓(ya)(ya)器(qi)也(ye)不能變(bian)壓(ya)(ya)，交流(liu)接觸器(qi)不會吸合。

打開電力補償電容柜前必須先斷開斷路器或隔離開關，讓高壓電容補償柜的放電裝置自動放電，三分鐘后方可打開柜門，打開柜門后須人工放電。高壓電容補償在運行中發出特殊響聲是內部絕緣崩潰先兆，應立即停止運行，查找故障高壓電容補償。高壓補償電容柜外殼膨脹(zhang)是過電(dian)壓引起介質分解析出氣體，應立即停止運行查找故(gu)障高壓電(dian)容補償。

補償電容柜全稱無功功率補償，是一種在電力供電系統中起提高電網的功率因數的作用，降低供電變壓器及輸送線路的損耗，提高供電效率，改善供電環境的技術。所以上海補償電容柜在電(dian)力供(gong)(gong)電(dian)系(xi)統中處在一(yi)個不可缺少(shao)的非常(chang)重要的位置。合理的選(xuan)擇無功補償裝置，可以做到最(zui)大限(xian)度的減(jian)少(shao)電(dian)網(wang)的損耗，使(shi)電(dian)網(wang)質量提高。反之(zhi)，如選(xuan)擇或(huo)使(shi)用(yong)不當，可能(neng)造成供(gong)(gong)電(dian)系(xi)統，電(dian)壓波動，諧(xie)波增大等諸(zhu)多因素。