避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)在線(xian)監(jian)測(ce)(ce)器(qi)(qi)(qi)(qi)(qi)是(shi)高(gao)壓交流(liu)電力(li)系統中(zhong)(zhong)與避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)配套(tao)使用(yong)(yong)的(de)(de)儀器(qi)(qi)(qi)(qi)(qi)。該(gai)儀器(qi)(qi)(qi)(qi)(qi)串接在避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)接地回路中(zhong)(zhong)，監(jian)測(ce)(ce)器(qi)(qi)(qi)(qi)(qi)中(zhong)(zhong)的(de)(de)毫(hao)安(an)(an)表用(yong)(yong)于監(jian)測(ce)(ce)運(yun)(yun)行(xing)(xing)電壓下(xia)通過避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)的(de)(de)漏電流(liu)有效值，可(ke)以判斷避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)內部是(shi)否受潮，元件是(shi)否異常等(deng)情況(kuang)。動(dong)作(zuo)計(ji)數(shu)器(qi)(qi)(qi)(qi)(qi)則記錄避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)在過電壓下(xia)動(dong)作(zuo)的(de)(de)次數(shu)。指示燈(deng)是(shi)正常與否的(de)(de)警告(gao)。監(jian)測(ce)(ce)器(qi)(qi)(qi)(qi)(qi)與避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)完全隔離，穿心傳感(gan)器(qi)(qi)(qi)(qi)(qi)通過避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)底部下(xia)端接地線(xian)，安(an)(an)全可(ke)靠。該(gai)型有適合不(bu)同電壓等(deng)級(ji)電網中(zhong)(zhong)運(yun)(yun)行(xing)(xing)的(de)(de)避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)，在線(xian)監(jian)測(ce)(ce)避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)，充分(fen)增加(jia)電網運(yun)(yun)行(xing)(xing)安(an)(an)全。所以說避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)監(jian)測(ce)(ce)器(qi)(qi)(qi)(qi)(qi)的(de)(de)工(gong)作(zuo)是(shi)否正常，直(zhi)接影(ying)響我們對(dui)避(bi)(bi)雷(lei)器(qi)(qi)(qi)(qi)(qi)運(yun)(yun)行(xing)(xing)情況(kuang)的(de)(de)判斷，關乎著整個電網的(de)(de)運(yun)(yun)行(xing)(xing)安(an)(an)全。

       但是(shi)現(xian)有(you)(you)的(de)避(bi)(bi)雷(lei)器(qi)(qi)在線(xian)監(jian)(jian)測(ce)器(qi)(qi)是(shi)具(ju)有(you)(you)以下不足：1、避(bi)(bi)雷(lei)器(qi)(qi)監(jian)(jian)測(ce)器(qi)(qi)上的(de)接(jie)頭及內部采(cai)用(yong)金屬平墊，沒(mei)有(you)(you)采(cai)用(yong)密封(feng)墊圈，這樣的(de)密封(feng)效果較差(cha)，容(rong)易(yi)使內部元件受潮(chao)老化；2、未采(cai)用(yong)傘形接(jie)頭，雨水(shui)容(rong)易(yi)沿著螺(luo)紋及平墊進(jin)(jin)入瓷瓶(ping)然后進(jin)(jin)入監(jian)(jian)測(ce)儀內部，致使內部計數電路受潮(chao)甚至短(duan)路；3、避(bi)(bi)雷(lei)器(qi)(qi)監(jian)(jian)測(ce)器(qi)(qi)內部采(cai)用(yong)彈簧結構(gou)實現(xian)動作和復(fu)位，存在失(shi)效的(de)可能(neng)。這些都會導(dao)致避(bi)(bi)雷(lei)器(qi)(qi)在線(xian)監(jian)(jian)測(ce)儀測(ce)試結果異常，甚至造成事故。

       本(ben)文介紹了一種防反充(chong)交直流自動轉(zhuan)換裝置，能夠通過(guo)避雷器(qi)(qi)監(jian)測(ce)器(qi)(qi)校驗裝置解決百萬伏(fu)級避雷器(qi)(qi)監(jian)測(ce)器(qi)(qi)的校驗。