電力變壓器的額定容量

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文章來源:北京創聯匯通電氣 ????? 發布時間： 2020-09-23 09:35:00

導讀(du)：電力變壓器通過電磁感應將一個系統的交流電壓和電流轉換為另一個系統的電壓和電流的電力設備，電力變壓器是一種靜止的電氣設備，是用來將某一數值的交流電壓，電力變壓器變成

電力變壓器通過電磁感應將一個系統的交流電壓和電流轉換為另一個系統的電壓和電流的電力設備，電力變壓器是一種靜止的電氣設備，是用來將某一數值的交流電壓，電力變壓器變成頻率相同的另一種或幾種數值不同的電壓的設備，電力變壓器當一次繞組通以交流電時，電力變壓器就產生交變的磁通，交變的磁通通過鐵芯導磁作用，就在二次繞組中感應出交流電動勢。

電(dian)力變(bian)壓器額(e)定容(rong)量是一個表現功率的(de)慣用值(zhi)，電(dian)力變(bian)壓器是表征傳輸電(dian)能的(de)大小，以(yi)kVA或MVA表示，當(dang)對變(bian)壓器施加(jia)額(e)定電(dian)壓時，電(dian)力變(bian)壓器當(dang)在產品結構布置時，除要考慮非晶合金鐵心本身不(bu)受(shou)外(wai)力的(de)作用外(wai)，電(dian)力變(bian)壓器同時在計(ji)算時還須精確合理選(xuan)取(qu)非晶合金的(de)特性參數(shu)。

電(dian)(dian)(dian)(dian)(dian)力(li)(li)變壓(ya)器(qi)的(de)作用(yong)是(shi)多方面的(de)不僅能(neng)升高電(dian)(dian)(dian)(dian)(dian)壓(ya)把電(dian)(dian)(dian)(dian)(dian)能(neng)送(song)(song)到用(yong)電(dian)(dian)(dian)(dian)(dian)地(di)區，還能(neng)把電(dian)(dian)(dian)(dian)(dian)壓(ya)降低為各級使用(yong)電(dian)(dian)(dian)(dian)(dian)壓(ya)，以滿(man)足用(yong)電(dian)(dian)(dian)(dian)(dian)的(de)需要，電(dian)(dian)(dian)(dian)(dian)力(li)(li)變壓(ya)器(qi)在電(dian)(dian)(dian)(dian)(dian)力(li)(li)系統(tong)傳(chuan)送(song)(song)電(dian)(dian)(dian)(dian)(dian)能(neng)的(de)過程中，必然會產生電(dian)(dian)(dian)(dian)(dian)壓(ya)和(he)功(gong)率(lv)兩(liang)部(bu)分(fen)損耗，在輸送(song)(song)同(tong)(tong)一功(gong)率(lv)時(shi)電(dian)(dian)(dian)(dian)(dian)壓(ya)損耗與電(dian)(dian)(dian)(dian)(dian)壓(ya)成(cheng)反比，電(dian)(dian)(dian)(dian)(dian)力(li)(li)變壓(ya)器(qi)是(shi)由(you)繞(rao)在同(tong)(tong)一鐵芯上的(de)兩(liang)個或兩(liang)個以上的(de)線(xian)圈繞(rao)組(zu)組(zu)成(cheng)，繞(rao)組(zu)之(zhi)間是(shi)通(tong)過交變磁場而聯(lian)系著(zhu)并按電(dian)(dian)(dian)(dian)(dian)磁感應原理工作。

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