隨著電(dian)(dian)(dian)(dian)力(li)系(xi)統規模(mo)的(de)(de)(de)(de)不斷擴(kuo)大(da)以及系(xi)統中(zhong)(zhong)非(fei)線性負荷(he)的(de)(de)(de)(de)不斷增加(jia)，電(dian)(dian)(dian)(dian)力(li)系(xi)統受到(dao)的(de)(de)(de)(de)諧波(bo)(bo)污染也越來越嚴重，加(jia)上電(dian)(dian)(dian)(dian)力(li)系(xi)統可能出(chu)現的(de)(de)(de)(de)內外故障，這大(da)大(da)惡化了系(xi)統的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)能質(zhi)量。在電(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)子裝置大(da)量使用以前，電(dian)(dian)(dian)(dian)力(li)系(xi)統中(zhong)(zhong)主要(yao)的(de)(de)(de)(de)諧波(bo)(bo)源是發(fa)電(dian)(dian)(dian)(dian)機(ji)和(he)電(dian)(dian)(dian)(dian)力(li)變壓器。發(fa)電(dian)(dian)(dian)(dian)機(ji)是公用電(dian)(dian)(dian)(dian)網的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)源。在實際運(yun)行中(zhong)(zhong)，由(you)于多種原因(yin)，發(fa)電(dian)(dian)(dian)(dian)機(ji)的(de)(de)(de)(de)感(gan)應電(dian)(dian)(dian)(dian)動勢(shi)不是理想的(de)(de)(de)(de)正弦(xian)波(bo)(bo)，因(yin)此其輸出(chu)電(dian)(dian)(dian)(dian)壓中(zhong)(zhong)也包含一定(ding)的(de)(de)(de)(de)諧波(bo)(bo)。

生產型企業(ye)低(di)壓補償模組優缺點分(fen)析(xi)

下面(mian)就功(gong)率因數型舉例說(shuo)明。當這(zhe)個物理量滿足要(yao)求(qiu)(qiu)時(shi)，如(ru)(ru)cosΦ超前且(qie)>0.98，滯(zhi)后且(qie)>0.95，在(zai)這(zhe)個范圍內，此時(shi)控制(zhi)(zhi)(zhi)器(qi)沒(mei)有(you)控制(zhi)(zhi)(zhi)信(xin)號發出(chu)，這(zhe)時(shi)已投(tou)入(ru)的(de)電(dian)(dian)容(rong)器(qi)組不退出(chu)，沒(mei)投(tou)入(ru)的(de)電(dian)(dian)容(rong)器(qi)組也不投(tou)入(ru)。當檢測到(dao)cosΦ不滿足要(yao)求(qiu)(qiu)時(shi)，如(ru)(ru)cosΦ滯(zhi)后且(qie)<0.95，那(nei)么將一(yi)組電(dian)(dian)容(rong)器(qi)投(tou)入(ru)，并(bing)繼續監測cosΦ如(ru)(ru)還不滿足要(yao)求(qiu)(qiu)，控制(zhi)(zhi)(zhi)器(qi)則延時(shi)一(yi)段(duan)時(shi)間(jian)（延時(shi)時(shi)間(jian)可整定），再投(tou)入(ru)一(yi)組電(dian)(dian)容(rong)器(qi)，直到(dao)全部(bu)投(tou)入(ru)為止。

它可以(yi)使電(dian)(dian)(dian)力(li)(li)網(wang)絡的(de)供電(dian)(dian)(dian)品質得(de)以(yi)較大(da)提升，一次又將功(gong)(gong)率因數大(da)大(da)提高(gao)了(le)。其(qi)次，便(bian)是可以(yi)降低(di)電(dian)(dian)(dian)力(li)(li)系統的(de)電(dian)(dian)(dian)力(li)(li)損(sun)失(shi)，同(tong)時，工廠會參照不(bu)同(tong)的(de)線(xian)路(lu)及負載情況，來(lai)進(jin)行動力(li)(li)配(pei)線(xian)，隨(sui)著(zhu)總電(dian)(dian)(dian)流的(de)減小(xiao)，功(gong)(gong)率因數也隨(sui)著(zhu)使用電(dian)(dian)(dian)容和增(zeng)加時，這樣一來(lai)，便(bian)可以(yi)使供電(dian)(dian)(dian)端的(de)電(dian)(dian)(dian)力(li)(li)損(sun)失(shi)得(de)以(yi)較大(da)地(di)減少。