江蘇華(hua)辰發明了(le)一種干式變(bian)壓(ya)器低壓(ya)箔(bo)(bo)式線(xian)(xian)圈引(yin)線(xian)(xian)結(jie)構及引(yin)線(xian)(xian)繞制工(gong)藝，涉(she)及變(bian)壓(ya)器領域。發明采用雙層箔(bo)(bo)分流疊繞結(jie)構纏繞，每(mei)層銅箔(bo)(bo)采用單獨(du)的(de)引(yin)出結(jie)構，使得低壓(ya)線(xian)(xian)圈額定電流平分到每(mei)組引(yin)線(xian)(xian)銅排上，有效避免(mian)了(le)電流過大時(shi)導(dao)致(zhi)的(de)銅排適(shi)用度小的(de)問題，同(tong)時(shi)也有效縮減了(le)現場使用場地(di)。

施耐德(de)電(dian)(dian)(dian)氣發(fa)明了一種變壓(ya)(ya)器保(bao)(bao)(bao)護(hu)方法(fa)(fa)、裝置、繼電(dian)(dian)(dian)保(bao)(bao)(bao)護(hu)器及供(gong)(gong)(gong)電(dian)(dian)(dian)系統(tong)。該方法(fa)(fa)提(ti)供(gong)(gong)(gong)供(gong)(gong)(gong)電(dian)(dian)(dian)系統(tong)的(de)(de)拓撲(pu)(pu)結構與保(bao)(bao)(bao)護(hu)電(dian)(dian)(dian)流(liu)整(zheng)定值之間的(de)(de)預設(she)對(dui)(dui)應關系，任一繼電(dian)(dian)(dian)保(bao)(bao)(bao)護(hu)器在(zai)獲取供(gong)(gong)(gong)電(dian)(dian)(dian)系統(tong)的(de)(de)拓撲(pu)(pu)結構信(xin)息之后，基于該預設(she)對(dui)(dui)應關系確定與供(gong)(gong)(gong)電(dian)(dian)(dian)系統(tong)的(de)(de)當(dang)前拓撲(pu)(pu)結構對(dui)(dui)應的(de)(de)目(mu)標保(bao)(bao)(bao)護(hu)電(dian)(dian)(dian)流(liu)整(zheng)定值，還會獲取其所(suo)(suo)屬供(gong)(gong)(gong)電(dian)(dian)(dian)子(zi)系統(tong)內的(de)(de)變壓(ya)(ya)器的(de)(de)進線(xian)側電(dian)(dian)(dian)流(liu)以及所(suo)(suo)屬供(gong)(gong)(gong)電(dian)(dian)(dian)子(zi)系統(tong)內的(de)(de)弧(hu)光(guang)傳感器的(de)(de)弧(hu)光(guang)檢(jian)測信(xin)號，在(zai)進線(xian)側電(dian)(dian)(dian)流(liu)大于等于目(mu)標保(bao)(bao)(bao)護(hu)電(dian)(dian)(dian)流(liu)整(zheng)定值，且弧(hu)光(guang)檢(jian)測信(xin)號表征檢(jian)測到弧(hu)光(guang)的(de)(de)情況(kuang)下，斷(duan)開所(suo)(suo)屬供(gong)(gong)(gong)電(dian)(dian)(dian)子(zi)系統(tong)內的(de)(de)變壓(ya)(ya)器與供(gong)(gong)(gong)電(dian)(dian)(dian)網絡的(de)(de)連接，方案兼(jian)顧保(bao)(bao)(bao)護(hu)靈敏度及保(bao)(bao)(bao)護(hu)穩(wen)定性，能夠解決現有(you)技(ji)術中變壓(ya)(ya)器保(bao)(bao)(bao)護(hu)方法(fa)(fa)存在(zai)的(de)(de)問(wen)題。

保變電(dian)氣發明(ming)了一種變壓(ya)器有(you)載開(kai)(kai)關電(dian)位(wei)電(dian)阻的(de)安裝(zhuang)(zhuang)結構及方(fang)法，屬于(yu)變壓(ya)器制作(zuo)技術(shu)領域(yu)。發明(ming)的(de)有(you)益效果是(shi)：既滿足安裝(zhuang)(zhuang)需求，同時又能降低開(kai)(kai)關固定板的(de)強度要求，并且能充(chong)分利用油箱(xiang)內(nei)的(de)空間(jian)，方(fang)便引線的(de)裝(zhuang)(zhuang)配(pei)。

特變電工申請了一(yi)種“變壓器絕緣件的測試(shi)(shi)工裝”發(fa)明專利。采用此發(fa)明測試(shi)(shi)工裝能夠得(de)(de)到對(dui)應不同(tong)抽真空階段(duan)的絕緣件樣(yang)品(pin)，以及得(de)(de)到對(dui)應不同(tong)注油階段(duan)的絕緣件樣(yang)品(pin)。

小編在(zai)國(guo)家知識產(chan)權局網站(zhan)中以“變壓器”為“發明(ming)名(ming)稱”進行檢索，發現截(jie)至2023年10月20日，變壓器行業共計有115067項專(zhuan)利。在(zai)2018年至2022年期間，變壓器專(zhuan)利申(shen)請(qing)數量整體呈(cheng)波動趨勢，其中2020年全(quan)行業申(shen)請(qing)最(zui)多(duo)，全(quan)年共申(shen)請(qing)了(le)13673項變壓器專(zhuan)利。