理想運行負(fu)荷通常情況下，電(dian)(dian)(dian)力(li)干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)的(de)運行負(fu)荷約(yue)為60 ~ 70% SE(電(dian)(dian)(dian)力(li)干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)SE-額定(ding)視在容量)，此時干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)損耗(hao)小，運行成本低(di)。理想功率因數(shu)提(ti)高(gao)(gao)了電(dian)(dian)(dian)網的(de)功率因數(shu)，有利于(yu)干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)的(de)經濟(ji)運行。降(jiang)低(di)電(dian)(dian)(dian)力(li)干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)的(de)運行溫度(du)如(ru)果溫升超(chao)(chao)過(guo)8，電(dian)(dian)(dian)力(li)干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)的(de)使(shi)用壽命將減半。如(ru)果其工作溫度(du)超(chao)(chao)過(guo)干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)繞組(zu)絕緣(yuan)(yuan)的(de)允許(xu)范圍(wei)，絕緣(yuan)(yuan)會迅速(su)老化，甚至使(shi)繞組(zu)擊穿，燒(shao)毀干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)。電(dian)(dian)(dian)力(li)干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)避峰運行應(ying)降(jiang)低(di)峰值(zhi)負(fu)荷，提(ti)高(gao)(gao)低(di)負(fu)荷。保(bao)持電(dian)(dian)(dian)力(li)干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)三相負(fu)荷平(ping)衡(heng)。負(fu)序電(dian)(dian)(dian)流(liu)不(bu)應(ying)超(chao)(chao)過(guo)正序電(dian)(dian)(dian)流(liu)的(de)5%。如(ru)果連接干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)繞組(zu)YO，中(zhong)性線(xian)中(zhong)流(liu)動的(de)電(dian)(dian)(dian)流(liu)不(bu)應(ying)超(chao)(chao)過(guo)25% IE(干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)的(de)IE額定(ding)電(dian)(dian)(dian)流(liu))。如(ru)果超(chao)(chao)過(guo)這個(ge)(ge)值(zhi)，損失會增加。降(jiang)低(di)或消除供電(dian)(dian)(dian)系統的(de)高(gao)(gao)次諧(xie)波。電(dian)(dian)(dian)力(li)系統無論產生(sheng)哪一個(ge)(ge)等級的(de)高(gao)(gao)次諧(xie)波都會造成電(dian)(dian)(dian)能損耗(hao)，電(dian)(dian)(dian)力(li)干(gan)(gan)(gan)式(shi)(shi)變(bian)(bian)(bian)壓(ya)器(qi)(qi)也不(bu)例外(wai)。

干式變(bian)壓(ya)器接(jie)線(xian)改為V接(jie)線(xian)是經濟運行的(de)重要(yao)手(shou)段之(zhi)一

電力干(gan)式變壓器的合(he)理負荷(he)分配對于(yu)兩個或(huo)兩個以上容量相同(tong)或(huo)不(bu)同(tong)的干(gan)式變壓器，負荷(he)分配是不(bu)同(tong)的。配電不(bu)當，重負荷(he)有功損(sun)(sun)耗(hao)增大，輕(qing)負荷(he)無功損(sun)(sun)耗(hao)增大，功率(lv)因(yin)數變差(cha)。

來(lai)源：中軟啟動網