Hi，大家好，眾所周知創聯匯通是一家經營多年的專業變壓器電力公司，對于干式變壓器、油浸式變壓器、地埋式變壓器、箱式變壓器等有這豐富的制造經驗和完善的服務解決方案。那么今天創聯匯通繼續為大家分享變壓器行業知識。 干式變壓器允許溫升

干式變壓器允許溫升

　　影響變壓器溫度上升的原因包括干式變壓器的壽命、干式變壓器的安全運行、干式變壓器的檢查(cha)技(ji)術。

　　卷(juan)(juan)線(xian)(xian)(xian)的(de)(de)(de)容許(xu)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)。卷(juan)(juan)線(xian)(xian)(xian)的(de)(de)(de)容許(xu)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)是整個(ge)卷(juan)(juan)線(xian)(xian)(xian)的(de)(de)(de)平(ping)均(jun)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)。用電阻法(fa)測(ce)定(ding)的(de)(de)(de)允許(xu)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)的(de)(de)(de)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)與絕(jue)(jue)(jue)緣(yuan)(yuan)耐熱等級(ji)有(you)(you)關。油(you)浸式(shi)干(gan)式(shi)變壓器屬于甲級(ji)絕(jue)(jue)(jue)緣(yuan)(yuan)。傳統的(de)(de)(de)卷(juan)(juan)線(xian)(xian)(xian)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)測(ce)量(liang)方法(fa)是阻力，測(ce)量(liang)平(ping)均(jun)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)，A級(ji)絕(jue)(jue)(jue)緣(yuan)(yuan)平(ping)均(jun)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)為(wei)(wei)65 K，平(ping)均(jun)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)和更高(gao)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)差為(wei)(wei)13 K，當(dang)(dang)年平(ping)均(jun)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)為(wei)(wei)20 C，A級(ji)絕(jue)(jue)(jue)緣(yuan)(yuan)卷(juan)(juan)線(xian)(xian)(xian)的(de)(de)(de)更高(gao)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)為(wei)(wei)20+65+13=98 C。生命(ming)(ming)。干(gan)式(shi)變壓器的(de)(de)(de)各種絕(jue)(jue)(jue)緣(yuan)(yuan)容許(xu)平(ping)均(jun)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)，A級(ji)為(wei)(wei)60 K，E級(ji)為(wei)(wei)75 K，B級(ji)為(wei)(wei)80 K，F級(ji)為(wei)(wei)100 K，H級(ji)為(wei)(wei)125 K，C級(ji)為(wei)(wei)150 K，冬天(tian)的(de)(de)(de)卷(juan)(juan)線(xian)(xian)(xian)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)低于平(ping)均(jun)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)。纏繞壽命(ming)(ming)變長。夏季的(de)(de)(de)卷(juan)(juan)線(xian)(xian)(xian)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)高(gao)于平(ping)均(jun)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)上(shang)(shang)(shang)(shang)(shang)(shang)升(sheng)(sheng)(sheng)(sheng)。應該犧牲(sheng)生命(ming)(ming)。超(chao)(chao)有(you)(you)名容量(liang)也犧牲(sheng)了那(nei)個(ge)壽命(ming)(ming),不(bu)過，超(chao)(chao)有(you)(you)名容量(liang)工作的(de)(de)(de)情況，油(you)浸泡式(shi)的(de)(de)(de)干(gan)式(shi)變壓器A級(ji)絕(jue)(jue)(jue)緣(yuan)(yuan)卷(juan)(juan)線(xian)(xian)(xian)的(de)(de)(de)更高(gao)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)不(bu)可超(chao)(chao)過140℃。當(dang)(dang)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)超(chao)(chao)過140℃時，油(you)分(fen)解氣體影響強度(du)(du)(du)(du)(du)(du)。所以(yi)干(gan)式(shi)變壓器A級(ji)絕(jue)(jue)(jue)緣(yuan)(yuan)熱點(dian)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)為(wei)(wei)140(?)不(bu)可以(yi)超(chao)(chao)過。利用干(gan)式(shi)變壓器安全駕駛。

　　大容(rong)(rong)量(liang)的干(gan)式(shi)(shi)變(bian)壓器(qi)有幾(ji)個冷(leng)(leng)卻(que)方(fang)式(shi)(shi)。干(gan)式(shi)(shi)變(bian)壓器(qi)的額定容(rong)(rong)量(liang)一(yi)般指的是ONF的容(rong)(rong)許值。風扇丟失電源(yuan)的話，冷(leng)(leng)卻(que)效率(lv)降低。用ONAF冷(leng)(leng)卻(que)方(fang)式(shi)(shi)行駛的話卷(juan)線的平均溫度上(shang)升，用ONN冷(leng)(leng)卻(que)方(fang)式(shi)(shi)必須降低容(rong)(rong)量(liang)。定量(liang)運轉時，卷(juan)線的平均溫度上(shang)升不超過65 K。

　　此外，雙繞線或三繞線干式變壓器的兩條或三個繞線必須同時到達相同的溫度上升。當一個卷線的平均溫度上升達到65 K時，另一個或兩個卷線的溫度上升比65 K低，設計不經濟。油浸式干式變壓器還可使油面頂部和多條卷線的平均溫度上升同時達到容許溫度上升，更加經濟。總之，油面更高的溫度上升到55 K，平均卷線溫度上升到65 K是經濟性的計劃。在設計階段，合理選擇各卷線的電流密度，各卷線溫度上升接近65 K，負荷損失不超過標準值。同時，油面的上部達到著55 K,不過，用油循環強的干式變壓器實現難。強油空冷式變壓器的油頂溫度上升一般為40 K，強油水冷式變壓器的油頂溫度上升一般為35K。

解決方案展示：美式箱變 美式箱變(bian)是將變(bian)壓器(qi)器(qi)身、高(gao)壓負荷(he)開關、熔斷器(qi)等元(yuan)器(qi)件一(yi)同放在變(bian)壓器(qi)油(you)箱內,因浸(jin)在油(you)中(zhong),元(yuan)件體積大(da)為縮小,結構更(geng)為緊湊,安裝方便、靈活。全(quan)絕緣、全(quan)密封結構、安全(quan)可靠、操作方便、免維護。廣泛應用于(yu)住宅小區、高(gao)業(ye)中(zhong)心、廠礦企業(ye)、機(ji)場、車(che)站、學校等場所。