變壓器油溫怎麼測
？

變壓器是電力係統中重要的一次設備，其運行可靠性對電力係統安全可靠運行關係極大。據相關資料統計
，110kV及以上變壓器的平均事故率約為0.69%，qizhongyinraozuchaowenyunxing，daozhijueyuanlaohua，raozubeijichuan，bianyaqishaohuishiguzhanyouxiangdangdabili。bianyaqifeidianliangbaohuzhongdezhongwasibaohushijishangyeshijianjiefanyingbianyaqiwenduyichangqingkuang。

變壓器的使用壽命取決於它的繞組溫度

，繞組溫度對絕緣材料起著決定性作用。當變壓器繞組絕緣溫度在80～130℃範圍內
，溫度每升高6℃，其絕緣老化速度將增加一倍，即絕緣壽命就降低1/2，這就是絕緣老化的“六度法則”。

變壓器運行中
，一般規定85℃為上層油溫的界限，在東營地區，當上層油溫達到80℃以上時會發出告警信號“XX主變本體油溫高告警”、“XX主變本體油溫過高告警”。

油(you)浸(jin)式(shi)變(bian)壓(ya)器(qi)的(de)運(yun)行(xing)溫(wen)度(du)，包(bao)括(kuo)變(bian)壓(ya)器(qi)油(you)溫(wen)和(he)變(bian)壓(ya)器(qi)繞(rao)組(zu)溫(wen)度(du)。變(bian)壓(ya)器(qi)一(yi)般(ban)會(hui)在(zai)外(wai)殼(ke)頂(ding)部(bu)安(an)裝(zhuang)有(you)插(cha)入(ru)變(bian)壓(ya)器(qi)油(you)內(nei)部(bu)的(de)測(ce)溫(wen)槽(cao)
，通(tong)過(guo)在(zai)其(qi)中(zhong)設(she)置(zhi)測(ce)溫(wen)元(yuan)件(jian)測(ce)量(liang)變(bian)壓(ya)器(qi)油(you)溫(wen)。由(you)於(yu)測(ce)量(liang)的(de)對(dui)象(xiang)是(shi)在(zai)變(bian)壓(ya)器(qi)頂(ding)層(ceng)的(de)油(you)，因(yin)此(ci)我(wo)們(men)通(tong)常(chang)稱(cheng)其(qi)為(wei)變(bian)壓(ya)器(qi)頂(ding)層(ceng)油(you)溫(wen)。由(you)於(yu)變(bian)壓(ya)器(qi)繞(rao)組(zu)中(zhong)流(liu)過(guo)負(fu)荷(he)時(shi)會(hui)產(chan)生(sheng)熱(re)量(liang)，因(yin)此(ci)運(yun)行(xing)中(zhong)的(de)變(bian)壓(ya)器(qi)繞(rao)組(zu)溫(wen)度(du)一(yi)定(ding)高(gao)於(yu)變(bian)壓(ya)器(qi)油(you)的(de)溫(wen)度(du)。其(qi)中(zhong)對(dui)變(bian)壓(ya)器(qi)絕(jue)緣(yuan)老(lao)化(hua)影(ying)響(xiang)最(zui)嚴(yan)重(zhong)的(de)，是(shi)變(bian)壓(ya)器(qi)內(nei)部(bu)最(zui)熱(re)點(dian)的(de)溫(wen)度(du)
，我(wo)們(men)稱(cheng)其(qi)為(wei)變(bian)壓(ya)器(qi)熱(re)點(dian)溫(wen)度(du)。變(bian)壓(ya)器(qi)熱(re)點(dian)一(yi)般(ban)是(shi)在(zai)變(bian)壓(ya)器(qi)繞(rao)組(zu)靠(kao)近(jin)端(duan)部(bu)的(de)某(mou)個(ge)位(wei)置(zhi)。由(you)於(yu)無(wu)法(fa)準(zhun)確(que)定(ding)位(wei)，精(jing)確(que)測(ce)量(liang)
，因(yin)此(ci)我(wo)們(men)往(wang)往(wang)用(yong)變(bian)壓(ya)器(qi)繞(rao)組(zu)溫(wen)度(du)來(lai)替(ti)代(dai)變(bian)壓(ya)器(qi)熱(re)點(dian)溫(wen)度(du)，作(zuo)為(wei)監(jian)視(shi)變(bian)壓(ya)器(qi)內(nei)部(bu)熱(re)點(dian)溫(wen)度(du)的(de)一(yi)種(zhong)手(shou)段(duan)。因(yin)此(ci)油(you)浸(jin)式(shi)變(bian)壓(ya)器(qi)上(shang)一(yi)般(ban)會(hui)配(pei)置(zhi)變(bian)壓(ya)器(qi)頂(ding)層(ceng)油(you)溫(wen)表(biao)和(he)變(bian)壓(ya)器(qi)繞(rao)組(zu)溫(wen)度(du)表(biao)。

wendubiaoshangdeheizhizhenzhishishijideyunxingwendu
，hongzhizhenzhishishedingdeshangxianbaojingwendu。dangbianyaqishangcengyouwenchaoguogaizhishihuibaojing，liangzhizhenxiangpengshidianjiediandaotong，fachubaojingxinhao，bingqiehongzhenshangyougetuqi
，dangyouwenchaoguoyunxingzhongzuigaowendushi
，heizhizhenjiuhuidaidonghongzhizhenzhuandong
，cishihongzhenbiaoshiyunxingzhongsuodadaodezuigaowendu