干式變壓器通常與空載電流一起使用。干式變(bian)壓器具有大量的空載電流。對于干式變壓器，這些空載電流會對干式變壓器的運行產生影響。常見的干式變壓器空載電流的形式也非常多樣化。普通干式變壓器的空載電流的操作也對溫度有很大影響。有必要不斷提高干式變壓器的空載電流強度，以確保干式變壓器的空載電流合理保持溫度，從而更好地保護干式變壓器。對抗溫度變化。干式變壓器的空載電流對溫度有什么影響？讓我們一起來看下吧！

空載電(dian)(dian)流(liu)(I0)是(shi)(shi)磁化電(dian)(dian)流(liu)(I1)與(yu)鐵損(sun)電(dian)(dian)流(liu)(I2)的(de)(de)(de)(de)矢(shi)量和(he)，由(you)于(yu)二者成(cheng)相位差900，所以(yi)空載電(dian)(dian)流(liu)為：I0=√(I1)2+(I2)2 (I1>>I2)溫(wen)升(sheng)(sheng)是(shi)(shi)指(zhi)干(gan)式變(bian)(bian)壓器(qi)工作(zuo)時鐵芯與(yu)線(xian)(xian)包的(de)(de)(de)(de)溫(wen)度高(gao)出(chu)周(zhou)圍環境溫(wen)度的(de)(de)(de)(de)部分δT。由(you)于(yu)I1>>I2，即鐵芯產(chan)(chan)生(sheng)(sheng)的(de)(de)(de)(de)損(sun)耗小(xiao)(xiao)，溫(wen)升(sheng)(sheng)部分就很小(xiao)(xiao)，主(zhu)要(yao)(yao)的(de)(de)(de)(de)損(sun)耗來(lai)自于(yu)線(xian)(xian)包的(de)(de)(de)(de)內阻以(yi)及線(xian)(xian)圈上面流(liu)過的(de)(de)(de)(de)電(dian)(dian)流(liu)(P=I2R)，這(zhe)是(shi)(shi)產(chan)(chan)生(sheng)(sheng)溫(wen)升(sheng)(sheng)主(zhu)要(yao)(yao)的(de)(de)(de)(de)因數(一(yi)般都是(shi)(shi)以(yi)線(xian)(xian)包的(de)(de)(de)(de)平均溫(wen)升(sheng)(sheng)作(zuo)為干(gan)式變(bian)(bian)壓器(qi)溫(wen)升(sheng)(sheng)的(de)(de)(de)(de)指(zhi)標(biao))。空載電(dian)(dian)流(liu)大小(xiao)(xiao)決(jue)定功率因數而影響(xiang)電(dian)(dian)網或電(dian)(dian)源，對于(yu)中小(xiao)(xiao)功率的(de)(de)(de)(de)電(dian)(dian)子(zi)干(gan)式變(bian)(bian)壓器(qi)來(lai)說，空載電(dian)(dian)流(liu)的(de)(de)(de)(de)大小(xiao)(xiao)對電(dian)(dian)網和(he)電(dian)(dian)源影響(xiang)可(ke)忽略不計。溫(wen)升(sheng)(sheng)是(shi)(shi)作(zuo)為一(yi)個電(dian)(dian)磁參量的(de)(de)(de)(de)一(yi)個取值考慮，另一(yi)點影響(xiang)干(gan)式變(bian)(bian)壓器(qi)的(de)(de)(de)(de)壽命。由(you)此可(ke)見空載電(dian)(dian)流(liu)大小(xiao)(xiao)與(yu)溫(wen)升(sheng)(sheng)的(de)(de)(de)(de)高(gao)低關系可(ke)以(yi)忽略不計，要(yao)(yao)控制溫(wen)升(sheng)(sheng)則(ze)先要(yao)(yao)考慮的(de)(de)(de)(de)是(shi)(shi)控制繞組的(de)(de)(de)(de)銅損(sun)。

　　以上是常見地(di)(di)(di)(di)干式(shi)變(bian)壓器(qi)(qi)的(de)(de)溫升地(di)(di)(di)(di)主要(yao)的(de)(de)和空載電流(liu)的(de)(de)關系(xi)，要(yao)仔(zi)細地(di)(di)(di)(di)進行(xing)(xing)提高干式(shi)變(bian)壓器(qi)(qi)的(de)(de)溫升的(de)(de)變(bian)化，實現干式(shi)變(bian)壓器(qi)(qi)的(de)(de)合(he)理運行(xing)(xing)和效(xiao)率地(di)(di)(di)(di)不斷地(di)(di)(di)(di)增強(qiang)，讓干式(shi)變(bian)壓器(qi)(qi)獲得更好(hao)地(di)(di)(di)(di)運行(xing)(xing)安全，從而保(bao)障(zhang)安全和效(xiao)率地(di)(di)(di)(di)提高!