電網中的大多數電氣負載，例如電動機，變壓器，熒光燈和電弧爐，都是感應負載。這些電感設備不僅需要在運行期間吸收電力系統的有功功率，而且還需要吸收無功功率。因此，在將并聯電容器低壓無功補償安(an)裝到電(dian)網中之后，它(ta)將能夠補(bu)償感(gan)性(xing)負載消耗的(de)無(wu)功功率(lv)(lv)(lv)，并減(jian)少電(dian)網向感(gan)性(xing)負載提供(gong)并通過電(dian)網傳輸的(de)無(wu)功功率(lv)(lv)(lv)。由(you)于(yu)功率(lv)(lv)(lv)因(yin)(yin)數改(gai)善的(de)根本原因(yin)(yin)在于(yu)無(wu)功功率(lv)(lv)(lv)的(de)減(jian)少，因(yin)(yin)此功率(lv)(lv)(lv)因(yin)(yin)數補(bu)償通常稱(cheng)為無(wu)功功率(lv)(lv)(lv)補(bu)償。

安徽無功補償具有自己的操作面板和LCD顯示屏，可顯示完整的數據。 它可以顯示內容，包括配電電壓，配電電流，配電功率因數，低壓無功補償自身的(de)(de)工作電流以(yi)及電容器外(wai)殼(ke)中(zhong)的(de)(de)溫度。

但是，從發電機和高壓傳輸線提供的無功功率遠遠不能滿足負載的需求。因此，應在電網中安裝一些低壓無功補償，以補充無功功率，以確保用戶對無功功率的需求。只有電氣設備才能在額定電壓下工作。無功補償是將設備與(yu)容(rong)性負(fu)(fu)載(zai)(zai)和(he)感性負(fu)(fu)載(zai)(zai)并(bing)聯連(lian)接在同一(yi)電路(lu)中。能量(liang)在兩個負(fu)(fu)載(zai)(zai)之間交換(huan)，這樣，電感性負(fu)(fu)載(zai)(zai)所需的(de)無功(gong)(gong)功(gong)(gong)率可以由電容(rong)性負(fu)(fu)載(zai)(zai)輸(shu)出功(gong)(gong)率補償。

電動機、變壓器杜絕輕載運行。針對負荷小于40%額定功率的電動機，安徽無功補償在滿足(zu)其啟動條件和(he)穩定工作等硬性條件下(xia)，可(ke)以(yi)更換小容量的電(dian)機，或者將(jiang)電(dian)動機接(jie)線采用星型接(jie)法。針對平均(jun)負荷(he)小于30%的變壓(ya)器(qi)，可(ke)以(yi)更換成小容量的變壓(ya)器(qi)，或者調整參數負荷(he)。

低壓無功補償中的(de)投(tou)切開關(guan)(guan)(guan)(guan)(guan)具有(you)特(te)殊的(de)電(dian)(dian)(dian)(dian)(dian)磁過零開關(guan)(guan)(guan)(guan)(guan)技術。 過零開關(guan)(guan)(guan)(guan)(guan)的(de)偏移小(xiao)于2.5。 開關(guan)(guan)(guan)(guan)(guan)浪涌(yong)電(dian)(dian)(dian)(dian)(dian)流(liu)小(xiao)于額定電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)2.5倍。 智能(neng)控(kong)制(zhi)單(dan)元通過在斷開開關(guan)(guan)(guan)(guan)(guan)的(de)動(dong)態(tai)和(he)(he)靜態(tai)觸(chu)點(dian)(dian)時檢(jian)測(ce)兩端電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)來控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)的(de)零交叉點(dian)(dian)的(de)閉(bi)(bi)合：通過在投(tou)切開關(guan)(guan)(guan)(guan)(guan)的(de)動(dong)態(tai)和(he)(he)靜態(tai)觸(chu)點(dian)(dian)時檢(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)流(liu)來控(kong)制(zhi)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)閉(bi)(bi)合時，控(kong)制(zhi)其在電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)過零點(dian)(dian)處(chu)斷開以實現“過零開關(guan)(guan)(guan)(guan)(guan)”功(gong)(gong)(gong)能(neng)，使(shi)低(di)(di)壓(ya)(ya)(ya)功(gong)(gong)(gong)率電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)投(tou)入運行時產(chan)生的(de)浪涌(yong)電(dian)(dian)(dian)(dian)(dian)流(liu)很小(xiao)，并且沒有(you)返(fan)回低(di)(di)壓(ya)(ya)(ya)功(gong)(gong)(gong)率電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)時會產(chan)生電(dian)(dian)(dian)(dian)(dian)弧，從而延(yan)長(chang)了(le)低(di)(di)壓(ya)(ya)(ya)功(gong)(gong)(gong)率電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)和(he)(he)開關(guan)(guan)(guan)(guan)(guan)設備本身的(de)壽命，還減少了(le)開關(guan)(guan)(guan)(guan)(guan)設備接通和(he)(he)關(guan)(guan)(guan)(guan)(guan)閉(bi)(bi)時對電(dian)(dian)(dian)(dian)(dian)網的(de)影響：提(ti)高了(le)電(dian)(dian)(dian)(dian)(dian)網的(de)電(dian)(dian)(dian)(dian)(dian)能(neng)質(zhi)量。